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| 1 | Parthenogenetic haploid embryonic stem cells produce fertile mice显示文摘 | Haifeng Wan Zhengquan He Mingzhu Dong Tiantian Gu Guan-Zheng Luo Fei Teng Baolong Xia Wei Li Chunjing Feng Xin Li Tianda Li Ling Shua Rui Fu Liu Wang Xiu-Jie Wang Xiao-Yang Zhao Qi Zhou | 2013 | Cell Research2013，23，11： | 13 |
| 2 | 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 |
| 3 | Variation patterns of fine root biomass, production and turnover in Chinese forests显示文摘China’s forests cover 208.3 million ha and span a wide range of climates and a large variety of forest types including tropical,temperate,and boreal forests.However the variation patterns of fine root(<2 mm in diameter biomass,production,and turnover from the south to the north are unclear.This study summarizes fine root biomass(FRB),production(FRP)and turnover rate(FRT)in Chi na’s forests as reported by 140 case studies published from 1983 to 2014.The results showed that the mean values o FRB,FRP and FRT in China’s forests were 278 gm^(-2)366 gm^(-2)a^(-1),and 1.19 a^(-1),respectively.Compared with other studies at the regional or global scales,FRB in China’s forests was lower,FRP was similar to estimates a the global scale,but FRT was much higher.FRB,FRP,and FRT in China’s forests increased with increasing mean annual precipitation(MAP),indicating that fine root vari ables were likely related to MAP,rather than mean annua temperature or latitude.This is possibly due to the smal variation in temperature but greater variation in precipitation during the growing season.These findings suggest that spatiotemporal variation in precipitation has a more profound impact on fine root dynamics in China’s forests,and this will impact carbon and nutrient cycles driven by root turnover in the future. | Shaozhong Wang Zhengquan Wang Jiacun Gu | 2017 | Journal of Forestry Research2017，28，6： | 4 |
| 4 | Fine root architecture, morphology, and biomass of different branch orders of two Chinese temperate tree species显示文摘 | Zhengquan Wang Dali Guo Xiangrong Wang Jiacun Gu Li Mei | 2006 | Plant and Soil (-)2006，，1： | 1 |
| 5 | Bacterial Diversity in Alpine Lakes: A Review from the Third Pole Region显示文摘Microorganisms are unique among all of the living organisms because of their high population size, advanced genetic diversity, short generation time, and quick response to the small change in environmental conditions. Remote alpine lakes of the Third Pole region provide the unique habitat for microorganisms acting as a natural laboratory and offering the information about the ecological roles of microorganisms. Many researchers focused on microbial communities as well as the impact of physicochemical, biological and hydrological parameters in lakes of this region since decades but the comprehensive review focusing on bacterial diversity and the role of environmental parameters still lacks. Here we reviewed bacterial diversity in lakes of the Third Pole region by analyzing 16 S rRNA clone libraries accessed from previous research findings. A total of 5 388 bacterial 16 S rRNA gene sequences were analyzed and classified into different phylogenetic groups. The average relative abundance of dominant taxa includes Betaproteobacteria(19%), Bacteroidetes(18%), Gammaproteobacteria(16%), Actinobacteria(15%), Alphaproteobacteria(14%), Cyanobacteria(7%), and Firmicutes(5%). Several adaptational strategies were adopted by these dominant bacterial groups in order to accommodate in the respective habitat. Nevertheless, lake water properties like temperature, pH, salinity, incident UV radiation, turbidity, and nutrients also played role in bacterial diversity. | Namita Paudel Adhikari Subash Adhikari Xiaobo Liu Liang Shen Zhengquan Gu | 2019 | Journal of Earth Science2019，30，2： | 1 |
| 6 | Food resources of the Khog Gzung site on the Tibetan Plateau revealed by sedimentary ancient DNA显示文摘Traditional zooarchaeological and archaeobotanical methods based on morphological identification of the excavated faunal and floral remains have been broadly used in reconstructing ancient subsistence economies. However, the accuracy and reliability of these methods rely heavily on the preservation state of the remains. By sequencing the ancient DNA of plants,animals, and microorganisms preserved in sediment, sedimentary ancient DNA(sedaDNA) now offers a novel approach for reconstructing the taxa composition dated back to hundreds of thousands of years. Yet, its application in open-air archaeological sites is rarely reported. In this study, we attempted to apply sedaDNA shotgun metagenomics on the archaeological deposits of the Khog Gzung site(an open-air site dated to 3160–2954 cal yr BP) on the Tibetan Plateau, and then compared the reconstructed taxonomic composition to the unearthed remains. Results showed that most of the crops and domestic animals identified by the two approaches, such as barley(Hordeum vulgare) and sheep(Ovis aries), are in general consistent. Some species, such as foxtail millet(Setaria italica), however, were only detected by sedaDNA. In addition, a variety of microorganisms were also detected by the sedaDNA. The two approaches combined revealed diversified food resources at the Khog Gzung site, which included crops such as millet, barley and wheat, domestic animals such as sheep and cattle, and likely also wild animals from fishing and hunting. Our data proves that sedaDNA has a great potential in reconstructing the faunal and floral compositions from archaeological deposits, therefore laying the foundation for its border applications. | Zhengquan GU Yu GAO Yiru WANG Jishuai YANG Jingkun RAN Xiaoyan YANG Wangdue SHARGAN Mikkel W.PEDERSEN Guilian SHENG Yucheng WANG Fahu CHEN | 2023 | Science China Earth Sciences2023，66，4： | 0 |
| 7 | Indica rice spread to the Tibetan Plateau in the 700s CE显示文摘Asian cultivated rice(Oryza sativa)has two main subspecies,indica(O.sativa sub.indica)and japonica(O.sativa sub.japonica).Japonica rice was domesticated in the middle and lower reaches of the Yangtze River in China,while indica appeared around 4000 a BP in northern south Asia after hybridization between introduced japonica and indigenous proto-indica.When and how indica rice spread into China is still barely understood,although it is cultivated widely in southern China today.Here we report on the earliest,definite indica rice remains in China,including charred seeds,phytoliths,and ancient DNA,from the newly investigated Kongsangqiao site at an elevation of 2676 m above sea level in Tibet,along with a charcoal study that reveals the vegetation and climate during of human occupation.AMS radiocarbon dating of charred indica rice grains suggests the remains are from the 8th century(700s CE).The dominant identified charcoal fragments are Himalayan pine(Pinus wallichiana),from which a rather cold climate is inferred where indica rice could not be grown in situ,suggesting it was likely brought to the site.Both archaeological and literature records thus support that indica rice,fully domesticated in northern south Asia,had spread to the southern margin of the Tibetan Plateau via parts of the ancient Tang-Tubo Road,Tubo-Nepal Road,by at least the 8th century CE. | Qingli SUN Qi YANG Yu GAO Zhengquan GU Jishuai YANG Shuzhi WANG Zhikun MA Yan TONG Xiaoyan YANG | 2022 | Science China Earth Sciences2022，65，12： | 0 |
| 8 | Comparison of soil chemical and microbial properties in monoculture larch and mixed plantations in a temperate forest ecosystem in Northeast China显示文摘Background:The introduction of broadleaved tree species in monoculture larch plantations to establish mixed plantations is a feasible way to improve soil properties.However,our understanding of how mixed plantations of larch and broadleaved tree species affect soil properties,particularly microbial community structures and functions,remains limited.We compared three paired monoculture larch(Larix gmelinii)and mixed[L.gmelinii–Fraxinus mandshurica(a dominant broadleaved species)]plantations to investigate the effect of a larch–broadleaved tree species combination on the carbon(C)and nitrogen(N)content,abundance and composition of microbial communities,and enzyme activities associated with litter and soil.Results:The bacterial abundance in the litter,soil N availability,pH and electronic conductivity were significantly higher in the mixed-species plantation in comparison with those of the monoculture plantation.However,in the litter of mixed-species plantation,the relative levels of Agaricomycetes fungi were lower than those of the monoculture plantation,indicating that soil fungal communities were affected more than bacterial communities.In contrast,soil in the mixed-species plantation showed increased exoglucanase and N-acetyl-β-glucosaminidase activities.However,the C and N levels,δ^(13)C andδ^(15)N values,and fungal abundance in litter and soil were not significantly different between the monoculture and mixed-species plantations.Conclusions:Our findings suggest that fungal community compositions and enzyme activities are sensitive to the introduction of broadleaved tree species into larch plantations.Thus,these parameters can be used as important indicators to evaluate the effects of tree species selection on soil restoration. | Kai Yang Jiaojun Zhu Weiwei Zhang Jiacun Gu Zhengquan Wang Shuang Xu | 2022 | Ecological Processes2022，11，1： | 0 |
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