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| 1 | Determining factors in potential evapotranspiration changes over China in the period 1971-2008显示文摘Potential evapotranspiration(ETo) is important to hydrological cycling and the global energy balance.Based on a modified FAO56-Penman-Monteith model,ETo was simulated for 603 meteorological stations across China in the period 1971-2008.Spatial distribution and temporal change of ETo were characterized,and the determining factors in ETo were revealed by sensitivity analysis.Results show obvious regional differences in annual average ETo and its determining factor.In general,annual average ETo decreased in the period 1971-2008,but increased since the 1990s.Wind speed and sunshine duration were determining factors in the annual ETo trend,with smaller contributions from relative humidity and temperature.Declining wind speed was the determining factor in decreasing annual ETo in northern temperate regions and the Tibetan Plateau.The spatial extent of wind speed influence contracted to northwest China in summer,and expanded to the whole country in autumn.Decreasing sunshine duration was the determining factor in decreasing annual ETo in subtropical and tropical regions,especially in summer,with a larger spatial influence mainly to the southeast of the farming-pastoral region.ETo change has distinct impacts on earth surface ecosystems and environment depending on different determining factors. | YIN YunHe WU ShaoHong DAI ErFu | 2010 | Chinese Science Bulletin2010,55,29: | 53 |
| 2 | Modeled effects of climate change on actual evapotranspiration in different eco-geographical regions in the Tibetan Plateau显示文摘从 1981 ~ 2010,高山的生态系统和在西藏的高原(TP ) 的效果的地区性的差别的土壤水分蒸发蒸腾损失总量上的气候变化的效果从 80 个气象学的车站基于 Lund-Potsdam-Jena 动态植被模型和数据被学习。在实际土壤水分蒸发蒸腾损失总量(AET ) 和在 TP 的水平衡的变化被分析。在最后 30 年,在 TP 的气候变化被显著地增加的温度,稍微增加的降水,和减少的潜在的土壤水分蒸发蒸腾损失总量(宠物) 描绘,它在 2000 前是重要的。AET 在 TP 的大多数部分展出了增加的趋势。降水和 AET 之间的差别在东南的高原减少了并且在西北的高原增加了。在大气的水需求的减少将在 AET 导致一个减少的趋势。然而,因为增加的降水,在大多数区域的 AET 增加了。增加的降水与增加的 AET 在 86% 区域被观察,而减少的降水与减少的 AET 在 73% 区域被观察。 | YIN Yunhe WU Shaohong ZHAO Dongsheng ZHENG Du PAN Tao | 2013 | Journal of Geographical Sciences2013,23,2: | 28 |
| 3 | Modeling net primary productivity of the terrestrial ecosystem in China from 1961 to 2005显示文摘网络主要生产率(NPP ) 是代表生态系统的结构和函数的最重要的索引。NPP 能被动态全球植被模型(DGVM ) 模仿,它被设计相对环境变化代表植被动力学。这研究在气候,土壤,和地形学上与数据基于 DGVM 综合生物圈模拟器(朱鹭) 模仿了瓷器生态系统的 NPP。在瓷器陆上的生态系统的 NPP 模拟的朱鹭的适用性首先被验证。有另外的相关研究的比较显示范围和模拟的吝啬的价值通常在观察的限制以内;全面模式和全部的年度 NPP 接近与另外的模型一起进行的模拟。模拟基于遥感离 NPP 评价也靠近。确认证明那朱鹭能在瓷器自然生态系统在 NPP 的大规模模拟被利用。我们然后从 1961 ~ 2005 与气候变化数据模仿了 NPP,当温暖是特别地惹人注目的时。下列是模拟的结果。(1 ) 全部的 NPP 在过去的 45 年里从 3.61 GtC/yr 变化了到 4.24 GtC/yr 并且展出了最小的重要线性增加或减少。(2 ) 在增加的地区性的差别或在 NPP 的减少大,但是展出了一个不足道的全面线性趋势。NPP 在大多数部分衰退了东方并且华中,特别在黄土高原。(3 ) 类似于年度 NPP 的变化法律,季节的 NPP 也显示了不足道的增加或减少;趋势线在一般水平以内。(4 ) 在季节的 NPP 变化的地区性的差别大。NPP 在黄土高原在春天,夏天,和秋天衰退了,但是在西藏的高原的大多数部分增加了。 | YUAN Quanzhi WU Shaohong ZHAO Dongsheng DAI Erfu CHEN Li ZHANG Lei | 2014 | Journal of Geographical Sciences2014,24,1: | 27 |
| 4 | Delineation of eco-geographic regional system of China显示文摘Eco-geographic regionalization has been one of the most important topics in China’s regionalization researches since the end of the 20th century. It is a major ecosystem in geographic zonality. A hierarchical system, which is formed by division or combination of natural features based on geographic relativity and comparison of major ecosystem factors (including biological and non-biological) and geographic zonality, is called eco-geographic regional system. This paper introduces process of China’s regionalization development. The first level unit, temperature zone, is delineated with main criteria of temperature. The second level unit, humidity region, is based on criteria of water/moisture states. The third level unit, natural region, is divided according to medium geomorphologic units. Vegetation types and soils are applied as supplementary criteria to indicate temperature and water/moisture states. Mapping process from qualitative to quantitative and China’s eco-geographic regional system are also explained in this paper. | WU Shaohong,YANG Qinye,ZHENG Du(Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China) | 2003 | Journal of Geographical Sciences2003,13,3: | 22 |
| 5 | NPP vulnerability of the potential vegetation of China to climate change in the past and future显示文摘用综合生物圈模拟器,一个动态植被模型,这研究开始模仿了网过去的 55 年(1961-2015 ) 里并且在未来的瓷器潜在的植被的主要生产率(NPP ) 动力学 35 年(2016-2050 ) 。然后,在平均气候拿潜在的植被的 NPP 作为评估的基础在 1986-2005 期间调节,这研究检验了潜在的植被是否适应气候变化。同时,无适应性的度被评估。最后,潜在的植被的 NPP 危险被综合评估到气候的无适应性的频率和度变化。在过去的 55 年里,在 Tianshan 山的南方的荒芜的生态系统和在中国的北方并且在西方的西藏的高原的草地生态系统的 NPP 对气候变化的效果敏感。大多数森林生态系统的 NPP 不对气候变化的影响敏感。对气候变化的低 NPP 弱点常绿树阔叶、具球果的森林被观察。而且,在在中央、东方的西藏的高原的 Tianshan 山脉和草地生态系统的北方的荒芜的生态系统的 NPP 也有低危险到气候变化。在下一 35 年里,对气候变化的 NPP 弱点将在中央、西方的西藏的高原在 Songliao 平原,在温暖的适度的地区的脱落阔叶的森林,和高山的大草原减少森林大草原。NPP 危险将显著地在 Kunlun 山在 Junggar 盆和高山的沙漠适度的沙漠增加。NPP 危险副热带常绿树阔叶的森林将也增加。有增加的危险的区域的区域将说明 27.5% 中国。 | YUAN Quanzhi WU Shaohong DAI Erfu ZHAO Dongsheng REN Ping ZHANG Xueru | 2017 | Journal of Geographical Sciences2017,27,2: | 21 |
| 6 | Ecosystem vulnerability of China under B2 climate scenario in the 21st century显示文摘This paper applies climate change scenarios in China based on the SRES assumptions with the help of RCMs projections by PRECIS (providing regional climates for impacts studies) system introduced to China from the Hadley Centre for Climate Prediction and Research at a high-resolution (50 km×50 km) over China. This research focuses on B2 scenario of SRES. A biogeochemical model 'Atmosphere Vegetation Integrated Model (AVIM2)' was applied to simulating ecosystem status in the 21st century. Then vulnerability of ecosystems was assessed based on a set of index of mainly net primary production (NPP) of vegetation. Results show that climate change would affect ecosystem of China severely and there would be a worse trend with the lapse of time. The regions where having vulnerable ecological background would have heavier impacts while some regions with better ecological background would also receive serious impacts. Extreme climate even would bring about worse impact on the ecosystems. Open shrub and desert steppe would be the two most affected types. When the extreme events happen, vulnerable ecosystem would extend to part of defoliate broad-leaved forest, woody grassland and evergreen conifer forest. Climate change would not always be negative. It could be of some benefit to cold region during the near-term. However, in view of mid-term to long-term negative impact on ecosystem vulnerability would be enormously. | WU ShaoHong DAI ErFu HUANG Mei SHAO XueMei LI ShuangCheng TAO Bo | 2007 | Chinese Science Bulletin2007,52,10: | 18 |
| 7 | Climatic trends over the Tibetan Plateau during 1971-2000显示文摘Trends of annual and monthly temperature, precipitation, potential evapotranspi- ration and aridity index were analyzed to understand climate change during the period 1971–2000 over the Tibetan Plateau which is one of the most special regions sensitive to global climate change. FAO56–Penmen–Monteith model was modified to calculate potential evapotranspiration which integrated many climatic elements including maximum and mini- mum temperatures, solar radiation, relative humidity and wind speed. Results indicate gen- erally warming trends of the annual averaged and monthly temperatures, increasing trends of precipitation except in April and September, decreasing trends of annual and monthly poten- tial evapotranspiration, and increasing aridity index except in September. It is not the isolated climatic elements that are important to moisture conditions, but their integrated and simulta- neous effect. Moreover, potential evapotranspiration often changes the effect of precipitation on moisture conditions. The climate trends suggest an important warm and humid tendency averaged over the southern plateau in annual period and in August. Moisture conditions would probably get drier at large area in the headwater region of the three rivers in annual average and months from April to November, and the northeast of the plateau from July to September. Complicated climatic trends over the Tibetan Plateau reveal that climatic factors have nonlinear relationships, and resulte in much uncertainty together with the scarcity of observation data. The results would enhance our understanding of the potential impact of climate change on environment in the Tibetan Plateau. Further research of the sensitivity and attribution of climate change to moisture conditions on the plateau is necessary. | WU Shaohong YIN Yunhe ZHENG Du YANG Qinye | 2007 | Journal of Geographical Sciences2007,17,2: | 16 |
| 8 | Northward-shift of temperature zones in China's eco-geographical study under future climate scenario显示文摘Despite the well-documented effects of global climate change on terrestrial species' ranges,eco-geographical regions as the regional scale of ecosystems have been poorly studied especially in China with diverse climate and ecosystems.Here we analyse the shift of temperature zones in eco-geographical study over China using projected future climate scenario.Projected climate data with high resolution during 1961-2080 were simulated using regional climate model of PRECIS.The number of days with mean daily temperature above 10℃ and the mean temperature of January are usually regarded as the principal criteria to indicate temperature zones,which are sensitive to climate change.Shifts due to future climate change were calculated by comparing the latitude of grid cells for the future borderline of one temperature zone with that for baseline period(1961-1990).Results indicated that the ranges of Tropical,Subtropical,Warm Temperate and Plateau Temperate Zones would be enlarged and the ranges of Cold Temperate,Temperate and Plateau Sub-cold Zones would be reduced.Cold Temperate Zone would probably disappear at late this century.North borderlines of temperature zones would shift northward under projected future climate change,especially in East China.Farthest shifts of the north boundaries of Plateau Temperate,Subtropical and Warm Temperate Zones would be 3.1°,5.3° and 6.6° latitude respectively.Moreover,northward shift would be more notably in northern China as future temperature increased. | WU Shaohong ZHENG Du YIN Yunhe LIN Erda XU Yinlong | 2010 | Journal of Geographical Sciences2010,20,5: | 16 |
| 9 | Effects of longitudinal range-gorge terrain on the eco-geographical pattern in Southwest China显示文摘在纵的高耸山和深山谷之间的平行安排在本地自然环境的区别上有重要效果的瓷器西南的特殊地面模式和在这个区域的 eco 地理的模式。 1:50,000 纵的范围峡区域( LRGR )的数字举起模型( DEM )数据,从车站建立的气象学的观察数据到 2010 ,水文学观察数据,规范的差别植被索引( NDVI )和网象 1:1,000,000 植被类型数据一样的 MOD13 和 MOD17 的主要生产率( NPP )产品被使用。包括大气的蒸汽内容,降水,干旱 / 湿度索引,表面流量,和温度索引包括的表面的潮湿索引平均温度,年度积累的温度,全部的太阳的放射被选择。在这个区域基于 ANUSPLIN 花键功能, GIS 空间分析,小浪分析和风景模式分析,地区性的区别特征和热水的模式,生态系统结构和功能的主要控制的因素被分析在 eco 地理的元素的地区性的区别上揭示地面模式的效果。结果显示出那:在 LRGR 由地面模式,潮湿,温度和热影响了作为断断续续的纬差别和连续经纱扩展显示出重要分发特征。纵的山和山谷不仅在主要表面材料和精力的转移上有纵贯的走廊功能和散开效果,而且有东方西方障碍功能和堵住的效果。特殊地志的模式在植被风景差异和生态系统结构和功能的空间模式上有重要影响,它是植被风景差异和生态系统的空间分发上的主要控制的因素。小浪变化分析反映环境因素, NDVI 和 NPP 的空间 anisotropy,当小浪一致性分析象与控制度的量的关系一样在 NDVI 和 NPP 的空间分发上揭示控制因素时。在 LRGR 的特殊地面模式是在这个区域的 eco 地理的地区性的区别上的主要影响因素。当在 LRGR 的 eco 地理的地区性的系统的主要典型、特殊空间特征被形成,在 zonality 和 non-zonality 的联合效果下面,有走廊障碍的法律工作。 | PAN Tao WU Shaohong HE Daming DAI Erfu LIU Yujie | 2012 | Journal of Geographical Sciences2012,22,5: | 13 |
| 10 | Climate Changes in Northeastern China During Last Four Decades显示文摘The northeastern China is a sensitive region of climate change, whose detailed trend of climate changes is highly interesting. In this study, this kind of variation trend was analyzed. Potential evapotranspiration (PE) and moisture index (MI) were modeled by using Thornthwaite scheme based on the observation data of 1961-2004 from 94 meteorological stations. To describe the climate fluctuation in the northeastern China in 1961-2004, the linear regression method was used to analyze the variation trends of mean annual temperature, mean annual precipitation, PE and MI. Mann-Kendall method was used to test the significant difference. The results show a general increasing tendency in mean annual temperature, mean annual precipitation, PE and MI. However increasing tendency was more significant in mean annual temperature and PE than in mean annual precipitation and MI. Analysis of seasonal climate variation indicates that there showed positive trends in winter and in spring, while the positive trend was more significant in winter than in spring. Furthermore, the relations between climate changes and geographical factors were analyzed, the results show that both climate factors and their interannual variability were correlated to latitude, longitude and altitude, suggesting that latitude is the most climate factor affecting climate changes, followed by altitude and longitude. | ZHAO Dongsheng ZHENG Du WU Shaohong WU Zhengfang | 2007 | Chinese Geographical Science2007,17,4: | 11 |
| 11 | The Belt and Road:Geographical pattern and regional risks显示文摘Building the Belt and Road is initiatives of China to promote win-win international cooperation in the new era,aiming at green,health,intellect and peace and the joint developme nt with people of the coun tries along the route.Systematic an alysis on envir on mental characteristics,evolutionary tendency and future risks are certainly the scie ntific fun dame ntals of sustainable development for the Belt and Road construction.Applied remote sensing monitoring,statistical analysis,this paper investigates the regional characteristics of climate,topography,soil,hydrology,vegetation cover and terrestrial ecosystems production,as well as socio-economic conditions.Based on the regional characteristics,the Belt and Road is divided into 9 sub-regions:Central and Eastern Europe sub-region with cold and humid climate,Mongolia and Russia sub-region with cold and arid climate,Central and West Asia arid sub-region,Southeast Asia sub-region with warm and humid climate,Pakistan arid sub-region,Bangladesh-India-Myanmar sub-region with warm and humid climate,Eastern China monsoon sub-region,Northwest China arid sub-region and Tibetan Plateau sub-region.Combining modeling simulation with seenario projections,natural disaster assessment methodology is used to assess the risk of extreme events including heat waves,droughts and floods in the coming 30 years(2021-2050).Results show that,on the basis of the regional framework,the western Eurasia would be a warming trend;both sides of Qinghai-Tibet Plateau in high temperature and heat waves risk;Central and Eastern Europe sub-region with cold and humid climate in high drought risk;Bangladesh-lndia-Myanmar sub-region with warm and humid climate as well as Eastern China in high risk of flooding. | WU Shaohong LIU Lulu LIU Yanhua GAO Jiangbo DAI Erfu FENG Aiqing WANG Wentao | 2019 | Journal of Geographical Sciences2019,29,4: | 11 |
| 12 | Major advances in studies of the physical geography and living environment of China during the past 70 years and future prospects显示文摘The natural environment provides material essentials for human survival and development. The characteristics,processes, regional differentiation and forcing mechanisms of the elements of the natural environment(e.g. geomorphology,climate, hydrology, soil, etc.) are the main objects of research in physical geography. China has a complex natural environment and huge regional differentiation and therefore it provides outstanding reserach opportunities in physical geography. This review summarizes the most important developments and the main contributions of research in the physical geography and human living environment in China during the past 70 years. The major topics addressed are the uplift of the Tibetan Plateau and the evolution of its cryosphere, the development of fluvial systems, the acidification of the vast arid region of the Asian interior, variations in the monsoon and westerly climate systems on multiple timescales, the development of lakes and wetlands, the watershed system model, soil erosion, past human-environment interactions, biogeography, and physical geographic zonality. After briefly introducing international research developments, we review the history of research in physical geography in China, focusing on the major achievements and major academic debates, and finally we summarize the status of current research and the future prospects. We propose that in the context of the national demand for the construction of an ecological civilization, we should make full use of the research findings of physical geography, and determine the patterns and mechanisms of natural environmental processes in order to continue to promote the continued contribution of physical geography to national development strategies, and to further contribute to the theory of physical geography from a global perspective. | Fahu CHEN Bojie FU Jun XIA Duo WU Shaohong WU Yili ZHANG Hang SUN Yu LIU Xiaomin FANG Boqiang QIN Xin LI Tingjun ZHANG Baoyuan LIU Zhibao DONG Shugui HOU Lide TIAN Baiqing XU Guanghui DONG Jingyun ZHENG Wei YANG Xin WANG Zaijun LI Fei Wang Zhenbo HU Jie WANG Jianbao LIU Jianhui CHEN Wei HUANG Juzhi HOU Qiufang CAI Hao LONG Ming JIANG Yaxian HU Xiaoming FENG Xingguo MO Xiaoyan YANG Dongju ZHANG Xiuhong WANG Yunhe YIN Xiaochen LIU | 2019 | Science China Earth Sciences2019,62,11: | 11 |
| 13 | Vulnerability of natural ecosystem in China under regional climate scenarios: An analysis based on eco-geographical regions显示文摘对为到气候变化的自然生态系统的危险的评价是在气候变化和生态学的一个热话题,并且将支持适应并且减轻的气候变化。在这研究,根据瓷器自然生态系统的特征修改的 LPJ 模型被雇用在 A2, B2 和 A1B 情形下面模仿生态系统动力学。到气候变化的自然生态系统的危险根据危险评价模型的意见被估计。基于 eco 地理的区域,到气候变化的自然生态系统的危险被分析。结果为自然生态系统将在东方加强并且在生态系统危险的西方,而是模式变弱的瓷器建议那危险别被气候变化改变,它逐渐地向东北从东南升起到。在脆弱的度将主要在适度的 humid/sub-humid 区域和温暖的适度的 humid/sub-humid 区域集中的生态系统增加。在生态系统的减少脆弱的度可以出现在西北的干旱区域和 Qinghai 西藏高原区域。在近期的规模,在中国的自然生态系统将被气候变化稍微影响。在中间、长期的规模,不管多么将有严重地不利的效果,特别地在有更好的水和热状况的东方。 | ZHAO Dongsheng WU Shaohong | 2014 | Journal of Geographical Sciences2014,24,2: | 9 |
| 14 | Regional difference of aridity/humidity conditions change over China during the last thirty years显示文摘The meteorological data of 616 stations in China were used to calculate the potential evapotranspira-tion and aridity/humidity index by applying the modified FAO-Penman-Monteith model. Regional difference of trends in precipitation, potential evapotranspiration and arid-ity/humidity index over China and their interdecadal varia-tions were analyzed from 1971 to 2000. The results show that all the four climatic factors trends have obvious regional difference and interdecadal variations. Annual precipitation during the 30-year period shows an increasing trend over most regions of China, with decreasing trends in potential evapotranspiration and aridity/humidity index. Most regions in China become more humid, especially significant in northern Xinjiang, eastern Tibet, western Sichuan, and northern Yunnan. The average value over China would mask the regional difference of climate change because of the com-plex environmental condition in China. Therefore regional difference should be analyzed to further understand climate change and its impacts. Both water supply and demand need to be considered when attempting to study regional arid-ity/humidity conditions. | YIN Yunhe WU Shaohong ZHENG Du YANG Qingye | 2005 | Chinese Science Bulletin2005,50,19: | 8 |
| 15 | Research on barrier function and spatio-temporal heterogeneity of vegetation in southern LRGR显示文摘 | HAO Chengyuan DAI Erfu WU Shaohong ZHOU Changhai WANG Hao PAN Tao | 2006 | Chinese Science Bulletin2006,51,B11: | 7 |
| 16 | Spatio-temporal variation of the wet-dry conditions from 1961 to 2015 in China显示文摘As an important part of the regional environment, the wet-dry climate condition is determined by precipitation and potential evapotranspiration(expressed as ETo). Based on weather station data, this study first calculated ETo by using the FAO56Penman-Monteith model. Then, the dryness index K(ratio of ETo to precipitation) was used to study the spatio-temporal variation of the wet-dry condition in China from 1961 to 2015; moreover, dominant climatic factors of the wet-dry condition change were discussed. The annual precipitation and ETo of the Qinling-Huaihe line were close to a balance(K≈1.0). The annual precipitation in most areas exceeded the ETo in the south of this line and the east of Hengduan Mountains(K<1.0), where the climate is wet.Furthermore, the precipitation in the northwest inland areas of China, where the climate is dry, was markedly lower than ETo(K≥4.0). The overall annual K of China fluctuated around the 55-year mean and its linear trend was not significant. However, a relatively wet period of about 10 yr(1987–1996) was recorded. The overall annual K of China showed strong cyclicality on the time scale of 3, 7–8, 11 and 26–28 yr, and regional differences of the annual K trends and cyclicality were large. The degrees of wetness in the Northwest China and western Qinghai-Tibet Plateau were substantially increased, whereas the degrees of dryness in the Yunnan-Guizhou Plateau, Sichuan Basin, and Loess Plateau were markedly increased. The linear trend of the annual K in most regions of China was not significant, and the annual K of most areas in China showed strong cyclicality on the 8–14 yr time scale.Precipitation was the dominant factor of wet-dry condition change in most areas, especially in North China, where the annual K change was highly correlated with precipitation. | YUAN QuanZhi WU ShaoHong DAI ErFu ZHAO DongSheng ZHANG XueRu REN Ping | 2017 | Science China Earth Sciences2017,60,11: | 6 |
| 17 | Vapor corridor phenomenon and response of vegetation NPP in Longitudinal Range-Gorge Region显示文摘 | ZHOU Changhai WU Shaohong DAI Erfu HAO Chengyuan PAN Tao | 2006 | Chinese Science Bulletin2006,51,B11: | 6 |
| 18 | Rice re-cultivation in southern China: An option for enhanced climate change resilience in rice production显示文摘在南部的中国种的瑞斯说明在播种面积的 94% 总数和在生产的 88% 总数,它非常与中国食物有关系安全。由于在在空间 / 时间的分发的水可获得性和米饭生长之间的延长冲突,然而,米饭生产在 16%22% 的面积受不了季节的干旱,它损害食物生产能力和食物安全。与米饭和惯例集中于季节的干旱的空间分发适应它,并且基于平衡的水的分析供应为并且在 19812030 期间在成长季节规模由米饭要求,这份报纸估计变化在在变化气候下面的米饭生产的过程的季节的干旱以后,并且鉴别为气候的一般米饭重新耕作选择改变改编。一些结论能如下被得出。( 1 )瑞斯在季节的干旱建议衰落,与早季节米饭(早米饭此后)由 12,500 km2 ,由 80,000 km2 的中间的季节米饭(中间的米饭),和由 25,000 km2 的特别地迟了的季节米饭(迟了的米饭),它占几乎20%它的栽培面积。由于气候变化,在生产区域的主要米饭的季节的干旱趋于一般来说减轻,这被显示,迟了的季节米饭特别地。(2 ) 未来气候变化在在中国生产区域的米饭在水资源的空间 / 时间的分发上引起重要影响。为 rice-re-cultivation 基于预先设计的改编行动,米饭耕作模式经历在 19812000 和 20012030 之间的重要改变。在东方贵州和西方的湖南,单个早正的单个干燥耕作的模式被变成两倍收割。在东方湖南,干燥收割的模式加单个干燥耕作早被变成单身者。在北安徽,收割的干燥耕作的模式被变成中间的米饭。所有这些以后为米饭生产针对水的潜在的足够的可获得性。(3 ) 在这份报纸开发的瑞斯重新耕作模式帮助重新平衡对使用空间分析工具使米饭生长适应变化的米饭生长的水需求和供应从空间观点浇可获得性,并且找到响应气候的制片人友好的重新耕作选择改变的米饭。 | MA Xin WU Shaohong LI Yu'e ZHANG Xueyan GAO Qingzhu WU Yang | 2013 | Journal of Geographical Sciences2013,23,1: | 5 |
| 19 | The effects of land-use types and conversions on desertification in Mu Us Sandy Land of China显示文摘Based on multi-temporal remotely sensed materials of both 1985 and 2000, we analyzed the effects of land-use types and their conversions on desertification in Mu Us Sandy Land in the agro-pastoral transitional zone of north central China. In this study, the desertified land was classified into five degrees: potential, light, medium, severe and extreme. The results indicate that the extent of desertification expands slightly, while desertification degree is enhanced significantly. About 22.35% of the total land area in the study area is in the desertification course, and the expanded area of both severely and extremely desertified land accounts for 3.67% of the total area of Mu Us Sandy Land. About 9053 km of area witnessed changes in land-use types between 1985 and 2000, whi’ch accounted for 10.75% of the total. More importantly, the area of conversions among cultivated land, forestland and rangeland added up to 971.6 km2. This research reveals that both improper land-use types and conversions could accelerate the desertification process. Both cultivated land and forestland have more effects on the desertification development than rangeland. Some land-use type conversions, such as rangeland to cultivated land, rangeland to forestland and forestland to cultivated land, are attributed to the acceleration of the desertification development while the opposite can control the desertification development. | HAO Chengyuan WU Shaohong | 2006 | Journal of Geographical Sciences2006,16,1: | 4 |
| 20 | Risk Identification of Seismic Landslides by Joint Newmark and RockFall Analyst Models: A Case Study of Roads Affected by the Jiuzhaigou Earthquake显示文摘Geological disasters are a great threat to people's lives and property. At present, it is difficult to evaluate quantitatively the cascading effects of regional geological disasters, and the development of new methods for such evaluation is much needed. In this study, the authors have developed a joint procedure that couples the Newmark model and the RockFall Analyst model based on a GIS platform in order to identify the impact of seismic landslides on roads. The new method effectively combines two processes—seismic landslide occurrence probability analysis and mass movement trajectory simulation. The permanent displacement derived from the Newmark model is used to identify potential source areas of landslides.Based on the RockFall Analyst model, the possible impact of mass movement on the roads can be simulated. To verify the reliability of the method, the landslides induced by the 2017 Jiuzhaigou Earthquake were taken as a case study.The results suggest that about 21.37% of the study area is at high risk of seismic landslides, and approximately 3.95 km of road sections are at extremely high risk of large landslides. The simulated area is consistent with the distribution of disasters revealed by post-earthquake remote sensing image interpretation and field investigation in existing studies. This indicates that the procedure, which joins the Newmark and RockFall models, has a high reliability for risk identification and can be applied to seismic landslide risk assessment and prediction in similar areas. | Xiliu Yue Shaohong Wu Yunhe Yin Jiangbo Gao Jingyun Zheng | 2018 | International Journal of Disaster Risk Science2018,9,3: | 4 |