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浏览/检索结果: 共7条，第1-7条 帮助 限定条件 专题：遥感与数字地球研究所    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 A comparative study of urban expansion in Beijing, Tianjin and Tangshan from the 1970s to 2013 期刊论文 Remote Sensing, 2016, 卷号: 8, 期号: 6 作者:  Zhang, Zengxiang;  Li, Na;  Wang, Xiao;  Liu, Fang;  Yang, Linping 收藏  |  浏览/下载：21/0  |  提交时间：2017/04/24 NET PRIMARY PRODUCTION  PRIMARY PRODUCTIVITY  CLIMATE-CHANGE  CO2 EMISSIONS  TERRESTRIAL ECOSYSTEMS  PRECIPITATION GRADIENT  TEMPERATE GRASSLAND  DRIVING FORCES  CARBON-DIOXIDE  USE EFFICIENCY   Spatial patterns of ecosystem vulnerability changes during 2001-2011 in the three-river source region of the Qinghai-Tibetan Plateau, China 期刊论文 JOURNAL OF ARID LAND, 2016, 卷号: 8, 期号: 1, 页码: 23-35 作者:  Guo Bing;  Zhou Yi;  Zhu Jinfeng;  Liu Wenliang;  Wang Futao 收藏  |  浏览/下载：19/0  |  提交时间：2017/04/24 CELLULAR-AUTOMATON MODEL  SOCIAL FORCE MODEL  LATTICE-GAS MODEL  PEDESTRIAN EVACUATION  CROWD DYNAMICS  ESCAPE  MOVEMENT  FEATURES   Spatial variability of daytime CO2 concentration with landscape structure across urbanization gradients, Shanghai, China 期刊论文 CLIMATE RESEARCH, 2016, 卷号: 69, 期号: 2, 页码: 107-116 作者:  Pan, Chen;  Zhu, Xiyang;  Wei, Ning;  Zhu, Xudong;  She, Qiannan 收藏  |  浏览/下载：28/0  |  提交时间：2017/04/24 LEAF-AREA INDEX  LIGHT INTERCEPTION  RADIATIVE-TRANSFER  MODEL  CANOPY  STANDS  ARCHITECTURE  REFLECTANCE  EFFICIENCY  SCALES   Sequential pattern mining of land cover dynamics based on time-series remote sensing images 期刊论文 2016, 卷号: 0, 期号: 0, 页码: 1-24 作者:  Liu, Huichan;  He, Guojin;  Jiao, Weili;  Wang, Guizhou;  Peng, Yan 收藏  |  浏览/下载：17/0  |  提交时间：2017/04/24 Managing landscape heterogeneity in different socio-ecological contexts: contrasting cases from central Loess Plateau of China and southern Finland 期刊论文 LANDSCAPE ECOLOGY, 2015, 卷号: 30, 期号: 3, 页码: 535-546 作者:  Lu, Yihe;  Sun, Feixiang;  Wang, Jianglei;  Zeng, Yuan;  Holmberg, Maria 收藏  |  浏览/下载：15/0  |  提交时间：2016/04/20 Land cover  Landscape metrics  Landscape transition  Clustering analysis  Spatial heterogeneity  Landscape management   Changes in soil carbon stock predicted by a process-based soil carbon model (Yasso07) in the Yanhe watershed of the Loess Plateau 期刊论文 LANDSCAPE ECOLOGY, 2015, 卷号: 30, 期号: 3, 页码: 463-475 作者:  Lu, Nan;  Akujarvi, Anu;  Wu, Xing;  Liski, Jari;  Wen, Zhongming 收藏  |  浏览/下载：26/0  |  提交时间：2016/04/20 Soil organic carbon  Dynamic modeling  Carbon sequestration rate  Land use and land cover change  Uncertainty  Sensitivity   Land use dynamics and landscape change pattern in Hetao irrigation district, Inner Mongolia, China 会议论文 6th International Symposium on Digital Earth: Data Processing and Applications, Beijing, China, September 9, 2009 - September 12,2009 Zhang, Yinhui; Luo, Yi; Zhao, Wenwu 收藏  |  浏览/下载：16/0  |  提交时间：2014/12/07 This study analyzed spatial and temporal changes in land use in an irrigation district covering an area of 1.7 million ha in Northern China by GIS analyses and also investigated changes in landscape pattern using the landscape structure analysis program FRAGSTATS over the study period from 1986 to 2000. The decreases in farmland and the increases in grassland area mainly resulted from the policy of grain for green and converting slope farmland into pasture from China government. In spite of the efforts to conserve the fragile ecosystem  the land degradation  including soil salinization and grassland degradation  was spreading rapidly. The area of alkali-saline land increased by 22493 ha and about 50555 ha of dense grassland degraded into mid-density grassland. In terms of landscape fragmentation  both farmland and dense grassland showed the tendency of increased fragmentation. Both adverse natural conditions and human activities are responsible for the land degradation expansion in Hetao irrigation district  but the root causes are increasing population pressure and irrational human activities  such as flooding irrigation method and over-grazing. To prevent land degradation from spreading  population control and improvement of the management are prerequisite approaches. 2010 SPIE.