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| 1 | Soil microbial biomass carbon and nitrogen in forest ecosystems of Northeast China:a comparison between natural secondary forest and larch plantation显示文摘Aims Natural secondary forest(NSF)and larch plantation are two of the predominant forest types in Northeast China.However,how the two types of forests compare in sustaining soil quality is not well understood.This study was conducted to determine how natural secondary forest and larch plantation would differ in soil microbial biomass and soil organic matter quality.Methods Microbial biomass carbon(MBC),microbial biomass nitrogen(MBN),soil organic carbon(SOC)and total nitrogen(TN)in the 0-to 15-cm and 15-to 30-cm soil layers were investigated by making chemical and biological measurements in the montane region of eastern Liaoning Province,Northeast China,during the growing season of 2008 in stands of NSF and Larix olgensis plantation(LOP).Important Findings We found that soil MBC and MBN were significantly lower in the LOP than in the NSF.Both MBC and MBN declined significantly with increasing soil depth in the two types of stands.The ratios of MBC to SOC(MBC/SOC)and MBN to TN(MBN/TN)were also significantly lower in the LOP than in the NSF.Moreover,the values of MBC,MBC/SOC,and MBN/TN significantly varied with time and followed a similar pattern during the growing season,all with an apparent peak in summer.Our results indicate that NSF is better in sustaining soil microbial biomass and nutrients than larch plantation in the temperate Northeast China.This calls for cautions in large-scale conversions of the native forests to coniferous plantations as a forest management practice on concerns of sustaining soil productivity. | Kai Yang Jiaojun Zhu Min Zhang Qiaoling Yan Osbert Jianxin Sun | 2010 | Journal of Plant Ecology2010，3，3： | 44 |
| 2 | Development of japonica Photo-Sensitive Genic Male Sterile Rice Lines by Editing Carbon Starved Anther Using CRISPR/Cas9显示文摘Rice is one of the most important crops as it supports over25%of total caloric intake for humans(Kusano et al.,2015).The world population reached 7.3 billion in 2015 and is projected to reach 8.5 billion in 2030(Word Population Prospects:2015 Revision).To meet the food demands for the everincreasing population with limited arable land,scarce | Quanlin Li Dabing Zhang Mingjiao Chen Wanqi Liang Jiaojun Wei Yiping Qi Zheng Yuan | 2016 | Journal of Genetics and Genomics2016，43，6： | 26 |
| 3 | Effects of gaps on regeneration of woody plants: a meta-analysis显示文摘Forest gaps, openings in the canopy caused by death of one or more trees, have a profound effect on forest regeneration and drive the forest growth cycle. It is therefore necessary to understand the effects of forest gaps on regeneration for modern forest management. In order to provide a quantitative assessment of the effects of forest gaps on regeneration of woody plants, we conducted this review of gap effects on woody plant regeneration on the basis of 527 observations from 42 individual papers, and reported the results of these data in a meta-analysis. Overall, densities of regenerated woody plants were significantly greater(359%) in forest gaps than on the closed-canopy forest floor. The regeneration density in gaps of plantation forests was significantly greater(P < 0.05) than that of natural forest because the regeneration in gaps of plantation forests was improved by both gap effects and experimental measures. Similarly, in comparison to natural gaps, regeneration was better enhanced in artificial gaps. Regeneration density exhibited a significantly positive correlation with gap size, but a negative correlation with gap age because the gap size decreased with increasing gap age. Shade tolerance of woody plants affected regeneration density in gaps and understory. Average regeneration density of shade-tolerant species exhibited a significantly positive response to gaps but densities remained lower in total than those of intermediate and shade-intolerant species. Gap effects on regeneration decreased in response to increasing temperature and precipitation because of the limiting effects of lower temperature and moisture on woody plant regeneration. In summary, forest gaps enhance woody plant regeneration, and the effects of gaps varied by forest type, gap characteristics, environmental factors and plant traits. The results of this meta-analysis are useful for better understanding the effects and roles of gaps on forest regeneration and forest management. | Jiaojun Zhu Deliang Lu Weidong Zhang | 2014 | Journal of Forestry Research2014，25，3： | 15 |
| 4 | Response of Pinus koraiensis seedling growth to different light conditions based on the assessment of photosynthesis in current and one-year-old needles显示文摘As one of the three major five-leaved pines in the northern hemisphere,Pinus koraiensis is the most important dominant tree species in the natural mixed-broadleaved Korean pine forests.However,the regeneration of P.koraiensis under the canopy of secondary forest stands is poor because of the light limitation.This study was conducted to understand how P.koraiensis seedlings adapt to different light intensities and what would be the optimum light level for their establishment and growth.Three repetition plots with four light intensities(15%,30%,60%and 100%of the natural incident irradiances,achieved by suspending layers of black nylon net above and surrounding the plots)were set up under natural climate conditions in a montane region in eastern Liaoning Province,Northeast China.A total of 80 P.koraiensis seedlings with similar height and root collar diameter were transplanted into four plots.After one year of acclimation to the specific light conditions,the seasonal variations of the photosynthetic variables and needle traits of the current and one-year-old needles,and the growth parameters were observed under four light intensities.The results indicated that:(1)The seedling at60%treatment exhibited the greatest growth,which agreed with the response of the light-saturated photosynthetic rates(Amax)and the dark respiration rate(Rd)in the current and one-year-old needles,i.e.,Rd at60%treatment was significantly lower than that at 100%treatment,but Amax did not differ between the seedlings at 100%and 60%treatments.(2)The P.koraiensis seedlings have a certain photosynthetic plasticity to adapt the light conditions by adjusting their needle traits and regulating the physiological processes,because Amax,Rd,light saturation point and compensation point,the needle mass area,needle nitrogen and chlorophyll contents were significantly(p<0.05)correlated with the light intensities.Especially,Amax at 100%and 60%treatments was significantly higher(p<0.05)than that at 30%and 15%treatments for both current and one-year-old needles.(3)The needles of different ages played a commutative role during the growing season,i.e.,the one-year-old needles played a major role for the photosynthesis in the early growing season;the current year needles did in the later growing season.This ensured the effective photosynthesis throughout the growing season.These findings suggest that P.koraiensis is the in-between heliophilous and shade-tolerant tree species at least for the seedlings up to 8 years. | Jiaojun Zhu Kai Wang Yirong Sun Qiaoling Yan | 2014 | Journal of Forestry Research2014，25，1： | 13 |
| 5 | Carbon Sequestration Effects of Shrublands in Three-North Shelterbelt Forest Region, China显示文摘三北方的防风林福雷斯特(TSF ) 节目,是六个关键林地节目之一并且有一个 73 年的构造时期,从 1978 ~ 2050。在这个区域的灌木的碳隐遁的定量分析为在中国理解森林和另外的陆上的生态系统的碳隐遁的全面功能是重要的。这研究在 1978 和 2008 基于遥感图象在 TSF 区域调查了 shrubland 的分发区域,并且从出版报纸与领域调查和以前的数据在联合计算了 shrubland 的碳密度。从 1978 ~ 2008 的碳隐遁数量和率在 TSF 区域为四个分区和灌木的不同类型被分析。结果揭示了那:1 ) 在学习区域和它的四个分区的 shrubland 的区域在过去的三十年期间增加了。为在 2008 的整个区域的 shrubland 的区域是为 25 恢复了年的 1.2 tation。实验在 Yanan 城市里在 Yangjuangou 集水被进行, Shaanxi 省,中国。二个邻近的斜坡为这研究被选择。六个样品地点是 spaced 到沿着山斜坡的脚趾斜坡的从顶点的每 3545 m,和每个样品地点包含了三个采样阴谋。土壤在表面土壤层( 010 厘米和 1020 厘米)的器官的碳和相关物理化学的性质基于土壤采样和实验室分析被测量,并且土壤二氧化碳(公司<潜水艇class=“ a-plus-plus ”> 2 )排出物和环境因素同时在一样的样品地点被测量。结果显示一般来说,一张更高的土壤碳股票被发现在里面吗? | LIU Wenhui ZHU Jiaojun JIA Quanquan ZHENG Xiao LI Junsheng LOU Xuedong HU Lile | 2014 | Chinese Geographical Science2014，24，4： | 11 |
| 6 | Leaf nutrient dynamics and nutrient resorption:a comparison between larch plantations and adjacent secondary forests in Northeast China显示文摘Aims Conversion of secondary forests to pure larch plantations is a common management practice driven by the increasing demand for timber production in Northeast China,resulting in a reduction in soil nutrient availability after a certain number of years following conversion.Nutrient resorption prior to leaf senescence was related to soil fertility,an important nutrient conservation strategy for plants,being especially significant in nutrient-poor habitats.However,the seasonal dynamics of leaf nutrients and nutrient resorption in response to secondary forest conversion to larch plantations is not well understood.Methods A comparative experiment between larch plantations(Larix spp.)and adjacent secondary forests(dominant tree species including Quercus mongolica,Acer mono,Juglans mandshurica and Fraxinus rhynchophylla)was conducted.We examined the variations in leaf nutrient(macronutrients:N,P,K,Ca and Mg;micronutrients:Cu and Zn)concentrations of these tree species during the growing season from May to October in 2013.Nutrient resorption efficiency and proficiency were compared between Larix spp.and the broadleaved species in the secondary forests.Important Findings Results show that the seasonal variation of nutrient concentrations in leaves generally exhibited two trends,one was a downward trend for N,P,K,Cu and Zn,and another was an upward trend for Ca and Mg.The variations in foliar nutrient concentrations were mainly controlled by the developmental stage of leaves rather than by tree species.Resorption of the observed seven elements varied among the five tree species during leaf senescence.Nutrient resorption efficiency varied 6–75%of N,P,K,Mg,Cu and Zn,while Ca was not retranslocated in the senescing leaves of all species,and Mg was not retranslocated in Larix spp.Generally,Larix spp.tended to be more efficient and proficient(higher than 6–30%and 2–271%of nutrient resorption efficiency and resorption proficiency,respectively)in resorbing nutrients than the broadleaved species in the secondary forests,indicating that larch plantations had higher leaf nutrient resorption and thus nutrient use efficiency.Compared with Larix spp.,more nutrients would remain in the leaf litter of the secondary forests,indicating an advantage of secondary forests in sustaining soil fertility.In contrast,the larch plantation would reuse internal nutrients rather than lose nutrients with litter fall and thus produce a positive feedback to soil nutrient availability.In summary,our results suggest that conversion from secondary forests to pure larch plantations would alter nutrient cycling through a plantmediated pathway. | Tao Yan Xiaotao Lü Kai Yang Jiaojun Zhu | 2016 | Journal of Plant Ecology2016，9，2： | 10 |
| 7 | Leaf nitrogen and phosphorus resorption of woody species in response to climatic conditions and soil nutrients: a meta-analysis显示文摘Nutrient resorption before abscission is an important nutrient conservation mechanism regulated by climatic conditions and soil nutrients.However, our current understanding of leaf nutrient resorption is primarily derived from site-specific studies or from the use of greenleaf nutrient concentrations to represent those in soils.It remains unknown how nutrient resorption responds to natural soil-nutrient concentrations at a global scale.The effects of plant functional groups, climatic conditions, and soil nutrients and their interactions on leaf nutrient resorption are also unknown.In this study, we established a global database derived from 85 published papers,including 547 reports of nitrogen and phosphorus resorption efficiency(NRE and PRE), climatic factors(LAT,latitude; MAT, mean annual temperature; MAP, mean annual precipitation) and soil-nutrient data(STN, soil total nitrogen; STP, soil total phosphorus) across 111 research sites.The results demonstrated that mean NRE and PRE were 48.4 and 53.3%, respectively.NRE of trees was lower than those of shrubs.NRE and PRE of coniferous species were both higher than those of broad-leaved species.Evergreen species had higher PRE than did deciduous species.NRE was negatively related to STN, but PRE and STP were not related.Both NRE and PRE decreased with increasing MAT and MAP but increased with increasing LAT.Plant functional groups, climate and soil nutrients jointly explained 22 and 32% of the variations in NRE and PRE, respectively.It is important to note that climate(especially MAT) explained 12 and 29% of the variations in NRE and PRE, respectively, implying that continuing global warming will exert an increasingly profound influence on plant nutrient cycles. | Tao Yan Jiaojun Zhu Kai Yang | 2018 | Journal of Forestry Research2018，29，4： | 6 |
| 8 | Effects of continuous nitrogen addition on microbial properties and soil organic matter in a Larix gmelinii plantation in China显示文摘Continuous increases in anthropogenic nitrogen(N) deposition are likely to change soil microbial properties, and ultimately to affect soil carbon(C) storage.Temperate plantation forests play key roles in C sequestration, yet mechanisms underlying the influences of N deposition on soil organic matter accumulation are poorly understood. This study assessed the effect of N addition on soil microbial properties and soil organic matter distribution in a larch(Larix gmelinii) plantation. In a 9-year experiment in the plantation, N was applied at100 kg N ha^(-1) a^(-1) to study the effects on soil C and N mineralization, microbial biomass, enzyme activity, and C and N in soil organic matter density fractions, and organic matter chemistry. The results showed that N addition had no influence on C and N contents in whole soil. However,soil C in different fractions responded to N addition differently. Soil C in light fractions did not change with N addition, while soil C in heavy fractions increased significantly. These results suggested that more soil C in heavy fractions was stabilized in the N-treated soils. However,microbial biomass C and N and phenol oxidase activity decreased in the N-treated soils and thus soil C increased in heavy fractions. Although N addition reduced microbial biomass and phenol oxidase activity, it had little effect on soil C mineralization, hydrolytic enzyme activities, d13 C value in soil and C–H stretch, carboxylates and amides, and C–O stretch in soil organic matter chemistry measured by Fourier transform infrared spectra. We conclude that N addition(1) altered microbial biomass and activity without affecting soil C in light fractions and(2) resulted in an increase in soil C in heavy fractions and that this increase was controlled by phenol oxidase activity and soil N availability. | Kai Yang Jiaojun Zhu Jiacun Gu Shuang Xu Lizhong Yu Zhengquan Wang | 2018 | Journal of Forestry Research2018，29，1： | 5 |
| 9 | Effect of electroacupuncture on arginine vasopressin-induced endolymphatic hydrops显示文摘OBJECTIVE: To investigate the influence of electroacupuncture(EA) on experimentally induced endolymphatic hydrops(EH) in guinea pigs, and elucidate the association between the dehydrating effect of EA and changes in stria vascularis ultrastructure and expression of vasopressin type 2 receptor(V2R), cyclic adenosine monophosphate(cAMP),and aquaporin 2(AQP2) in the endolymphatic sac(ES).METHODS: The EH model was established by intraperitoneal injection of arginine vasopressin(AVP).As a treatment, EA was delivered to Baihui(GV 20)and Tinggong(SI 19) acupoints, once daily for 10 consecutive days. For histomorphological studies,degree of cochlear hydrops was evaluated by hematoxylin-eosin staining, and the ratio of scala media(SM) area to SM + scala vestibuli area was calculated. In mechanical studies, ultrastructural changes in stria vascularis tissue were examined by transmission electron microscopy. In addition, cAMP levels and mRNA expression levels of V2 R and AQP2 in the ES were compared among groups.RESULTS: EA treatment significantly reduced cochlear hydrops compared with hydropic guinea pigs(P = 0.015). Furthermore, EA attenuated ultrastructural changes in the stria vascularis tissue following EH, significantly upregulated the expression of V2 R(P = 0.016), and attenuated AVP-induced upregulation of both cAMP(P = 0.038) and AQP2 expression(P = 0.017) in the ES.CONCLUSION: Collectively, the results of the present study suggest that the dehydrating effect of EA is associated with improvement of stria vascularis ultrastructure and V2 R-cAMP-AQP2 signaling pathway regulation in the ES. | Jiang Liyuan He Jiaojun Chen Xixi Chen Huade | 2019 | Journal of Traditional Chinese Medicine2019，39，2： | 5 |
| 10 | Causal effects of shelter forests and water factors on desertification control during 2000–2010 at the Horqin Sandy Land region, China显示文摘The Horqin Sandy Land(HSL), the largest sandy land in the semi-arid agro-pastoral ecotone of Northeast China, has been subject to desertification during the past century. In response, and to control the desertification,government implemented the Three-North Shelter/Protective Forest Program, world's largest ecological reforestation/afforestation restoration program. The program began in1978 and will continue for 75 years until 2050. Understanding the dynamics of desertification and its driving forces is a precondition for controlling desertification.However, there is little evidence to directly link causal effects with desertification process(i.e., on the changing area of sandy land) because desertification is a complex process,that can be affected by vegetation(including vegetation cover and extent of shelter forests) and water factors such as precipitation, surface soil moisture, and evapotranspiration.The objectives of this study were to identify how influencing factors, especially shelter forests, affected desertification in HSL over a recent decade. We used Landsat TM imagery analysis and path analysis to identify the effects of spatiotemporal changes in water and vegetation parameters during2000–2010. Desertification was controlled during the study period, as indicated by a decrease in desert area at a rate of163.3 km2year-1and an increase in the area with reduced intensity or extent of desertification. Total vegetation cover in HSL increased by 10.6 % during the study period and this factor exerted the greatest direct and indirect effects on slowing desertification. The contribution of total vegetation cover to controlling desertification increased with the intensity of desertification. On slightly and extremely severe desertified areas, vegetation cover contributed 5 and 42 % of the desertification reduction, respectively. There were significant correlations between total vegetation cover and water conditions(i.e., evapotranspiration and precipitation)and the area of shelter forests(P \ 0.0001), in which water conditions and the existence of shelter forests contributed49.7 and 12.8 % to total vegetation cover, respectively. The area of shelter forests increased sharply due to program efforts, but only shrub forests had significant direct effects on reducing the area of desertification categorized as slightly desertified. The reason for the lack of direct effect of increased arbor forests(accounting for 95.3 % of the total increase in shelter forests) on reducing desertification might be that the selected arbor species were not suited to water conditions(low precipitation, high evapotranspiration) prevailing at HSL. The establishment of shelter forests aided control of desertification in the HSL region, but the effect was less than expected. Effective control of desertification in the HSL region or other similar sandy areas will require greater improvements in vegetation cover. In particular,shrub species should be selected for plantation with reference to their potential to survive and reproduce in the harsh climatic and weather conditions typical of desertified areas. | Qiaoling Yan Jiaojun Zhu Xiao Zheng Changjie Jin | 2015 | Journal of Forestry Research2015，26，1： | 5 |
| 11 | Foam Forming: An Effective Method to Prepare Polyimide Fiber-based Paper显示文摘Well-dispersed fiber suspension is the precondition of good paper formation. Compared with cellulosic fibers, synthetic fibers are prone to flocculate because of their long length and hydrophobic nature, resulting in poor paper formation. To solve this problem, dispersants and extremely low forming consistency are typically adopted during the traditional wet-forming process, which cause a large amount of water consumption and treatment cost. Therefore, increasing forming consistency without compromising paper formation remains a challenge for papermakers. In this work, foam forming was adopted to disperse polyimide fibers (PI) with high forming consistency. The results showed that the formation index of handsheets increased when the bubble size and distribution became small and narrow. Compared with traditional wet-forming process with the same consistency (0.4%), the formation index of handsheets by foam forming increased by approximately 100% when C8 alkyl glucoside (APG08) concentration reached 16 g/L. Notably, forming consistency could increase by eight times while keeping the same level of paper formation. Overall, foam forming exhibits great advantages in dispersing long fiber and reducing water consumption and environmental pressure, and has potential applications in specialty paper made of long fibers. | Shunxi Song Xiaoli Zhen Meiyun Zhang Peiyao Wang Jiaojun Tan | 2019 | Paper And Biomaterials2019，4，3： | 4 |
| 12 | A review of ecological mechanisms for management practices of protective forests显示文摘A protective forest,including shelterbelt,windbreak,and shelter forest as its synonyms,is characterized by the protective functions of various forest types distributed or planted on ecologically fragile areas or nearby the objects that need to be protected using the ecological effects of forests.Ecological mechanisms for management practices of protective forests is one of the disciplinary orientations in forest ecology and management.Most protective forest studies are dependent on forestry eco-engineering,such as the Great Plains Shelterbelt Project in the United States,the Great Plan for the Transformation of Nature in the Soviet Union,and the Three-North Afforestation Program in China.The development of sustainable management of protective forests has been given increasing attention by governments,scientists,and media due to their impacts on environment conservation and global change.We introduce forestry ecoengineering and provide a review of their main ecological mechanisms for management practices of protective forests.Ecological mechanisms for management systems currently applied are emphasized,i.e.,the theory of protection maturity and phase-directional management;the relationship between structure and protective functions and structural optimization measures;and,the decline mechanism and ecological restoration strategies.In addition,several unresolved problems in management practices of protective forests are discussed as well as the prospects for ecological mechanisms for management practices of protective forests in the future,which include:(1)theories and technologies for management practices of protective forests at the landscape or regional scale;(2)the decline mechanisms and corresponding ecological restoration approaches across multiple scales;and,(3)the comprehensive assessment of forestry eco-engineering at large-scales based on ecosystem principles. | Jiaojun Zhu Lining Song Yu Lei | 2021 | Journal of Forestry Research2021，32，2： | 3 |
| 13 | Structure, Pattern and Mechanisms of Formation of Seed Banks in Sand Dune Systems in Northeastern Inner Mongolia, China显示文摘 | Yan Qiaoling Liu Zhimin Zhu Jiaojun Luo Yongming Wang Hongmei Jiang Deming | 2005 | Plant and Soil (-)2005，，1： | 2 |
| 14 | Degeneration of photosynthetic capacity in mixotrophic plants, Chimaphila japonica and Pyrola decorata (Ericaceae)显示文摘The evolution of photosynthesis is an important feature of mixotrophic plants.Previous inferences proposed that mixotrophic taxa tend to retain most genes relating to photosynthetic functions but vary in plastid gene content.However,no sequence data are available to test this hypothesis in Ericaceae.To investigate changes in plastid genomes that may result from a transition from autotrophy to mixotrophy,the plastomes of two mixotrophic plants,Pyrola decorata and Chimaphila japonica,were sequenced at Illumina's Genome Analyzer and compared to the published plastome of the autotrophic plant Rhododendron simsii,which also belongs to Ericaceae.The greatest discrepancy between mixotrophic and autotrophic plants was that ndh genes for both P.decorata and C.japonica plastomes have nearly all become pseudogenes.P.decorata and C.japonica also retained all genes directly involved in photosynthesis under strong selection.The calculated rate of nonsynonymous nucleotide substitutions and synonymous substitutions of protein-coding genes(dN/dS) showed that substitution rates in shade plants were apparently higher than those in sunlight plants.The two mixotrophic plastomes were generally very similar to that of non-parasitic plants,although ndh genes were largely pseudogenized.Photosynthesis genes under strong selection were retained in the two mixotrophs,however,with greatly increased substitution rates.Further research is needed to gain a clearer understanding of the evolution of autotrophy and mixotrophy in Ericaceae. | Jiaojun Yu Chaobo Wang Xun Gong | 2017 | Plant Diversity2017，39，2： | 1 |
| 15 | Plant diversity of secondary forests in response to anthropogenic disturbance levels in montane regions of northeastern China 显示文摘 | Zhu Jiaojun Mao Zhihong Hu Lile | 2007 | Journal of Forest Research2007，12，： | 1 |
| 16 | Effect of thinning on plant species diversity and composition of understory heibs in a larch plantation显示文摘 | Zhu Jiaojun Mao Zhihong Zhang Caihong | 2008 | Frontiers of forestry in China2008，3，4： | 1 |
| 17 | Structure, pattern and mechanisms of formation of seed banks in sand dune systems in northeastern Inner Mongolia, China显示文摘 | Yan Qiaoling Liu Zhimin Zhu JiaoJun | 2005 | Plant and Soil2005，277，： | 1 |
| 18 | Using multi-source remote sensing data to classify larch plantations in Northeast China and support the development of multi-purpose silviculture显示文摘Due to increasing timber demands, large areas of secondary forests have been converted to larch plantations(LPs) in Northeast China because the secondary forests could not produce timber as much as LPs.However, there are a series of ecological problems such as lower soil fertility, reduced water-holding capacity and acidification of surface runoff water occurring in LPs because of the single-species composition of LPs.Therefore, a guidance on how to transform LPs into larch-broadleaf mixed forests(LBMFs) at a large spatial scale is needed for local foresters.First, Landsat time series data set and SPOT-5 images were combined to map the spatial–temporal distribution of LPs in Northeast China.Then, the topographical characteristics of LPs in 2010 s were determined.Furthermore, three sub-regions of LPs were divided closely linking to their ecosystem services and forest management aims.Finally, detailed information on how to transform the LPs into LBMFs was given according to the three subregions.The results showed that the area of LPs increased during 1980 s and 2010 s, and reached 2.61 million ha in2010 s.Of which, 0.72 million ha(27.6%) and 1.89 million ha(72.4%) LPs distributed in slopes less than 5° and greater than 5°, respectively.Of the LPs(72.4%) in slopes greater than 5°, 48.7 and 23.7% located in downslope(LPs locating at the down slope of adjacent secondary forests in the same aspect) and upslope(LPs locating at the up slope of adjacent secondary forests in the same aspect), respectively; 0.10 million ha(3.8%) located in slopes greater than 25°.The LPs were divided into Sub-Regions-Ⅰ, Ⅱ, Ⅲ according to slopes.For Sub-region-I(top role is to produce timber), self-fertilizing shrub species can be introduced after clean cutting for young-aged LPs, and release thinning can be applied for middle-aged LPs, fast growth thinning for near-matured LPs, and clear cutting for matured LPs.For Sub-Region-Ⅱ(the priority is to provide water conservation combined with timber production), the LPs should be induced into LBMFs.The LPs located the downslope positions in Sub-Region-Ⅱ can be transformed to LBMFs by natural regeneration of broadleaved tree species after thinning because of enough seed sources of broadleaved tree species from the secondary forests locating the upslope positions.The LPs located the upslope positions or the region where seed sources of broadleaved tree species are unavailable in Sub-Region-Ⅱ must be induced to LBMFs by artificial regeneration.For Sub-Region-Ⅲ(the preference is only for water conservation because the slope is greater than 25°), the LPs should be particularly protected from intensive disturbances, and induced into LBMFs by natural regeneration. | Guiduo Shang Jiaojun Zhu Tian Gao Xiao Zheng Jinxin Zhang | 2018 | Journal of Forestry Research2018，29，4： | 1 |
| 19 | Effects of gapsize created by thinning on seedling emergency,survival and es-tablishment in a coastal pine forest显示文摘 | Zhu Jiaojun Matsuzaki T Lee Fengqin | 2003 | Forest Ecology and Man-agement2003，182，13： | 1 |
| 20 | Bidirectional natural hybridization between sympatric Ligularia vellerea and L. subspicata显示文摘Natural hybridization has been regarded as a crucial pathway of speciation and provides the raw materials for the evolution of biodiversity. The interspecific natural hybridization of the genus Ligularia Cass.is universal and has been considered to be an important factor driving the high diversity of Ligularia species in the Hengduan Mountains, China. Although the natural hybridization between L. vellerea and L. subspicata was reported previously, the direction of hybridization was uncertain due to the limitation of sampling. Thus, in this study, we sampled more individuals and increased two fragments of chloroplast DNA on the basis of the previous study to further verify the natural hybridization between L. vellerea and L. subspicata and confirm the direction of hybridization. Based on DNA sequences(atpBrbcL, trnL-rpl32, trnQ-5'rps16, and nuclear ribosomal internal transcribed spacer region) data, we concluded that putative hybrids were primary products of hybridization between L. vellerea and L. subspicata and the hybridization was bidirectional. Moreover, sympatric L. tongolensis was not apparently involved in the hybridization. Surprisingly, some pure L. subspicata individuals showed the disaccordance between morphology and DNA data, which might indicate that introgression occurs between L. vellerea and L. subspicata. | Huai Ning Jiaojun Yu Xun Gong | 2017 | Plant Diversity2017，39，4： | 1 |
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