中国科学院机构知识库网格系统: 检索

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	High-Resolution Mapping of Soil Organic Matter at the Field Scale Using UAV Hyperspectral Images with a Small Calibration Dataset 期刊论文 OAI收割 REMOTE SENSING, 2023, 卷号: 15, 期号: 5 作者: Yan, Yang; Yang, Jiajie; Li, Baoguo; Qin, Chengzhi; Ji, Wenjun \| 收藏 \| 浏览/下载：36/0 \| 提交时间：2023/04/06 UAV hyperspectroscopy digital soil mapping soil organic matter geostatistical analyses visible near-infrared spectroscopy
	Soil pH exerts stronger impacts than vegetation type and plant diversity on soil bacterial community composition in subtropical broad-leaved forests 期刊论文 OAI收割 PLANT AND SOIL, 2020, 卷号: 450, 期号: 1-2, 页码: 273-286 作者: Cheng, Jingmin; Zhao, Mengxin; Cong, Jing; Qi, Qi; Xiao, Ye \| 收藏 \| 浏览/下载：16/0 \| 提交时间：2021/09/15 Environmental factors Network analyses Soil bacterial communities Subtropical broad-leaved forests Vegetation types 16S rRNA gene
	Satellite-Observed Evolution Dynamics of the Yellow River Delta in 1984-2018 期刊论文 OAI收割 IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING, 2020, 卷号: 13, 页码: 6044-6050 作者: Liu, Zhengjia; Xu, Nan; Wang, Jieyong \| 收藏 \| 浏览/下载：13/0 \| 提交时间：2021/03/16 Rivers Sediments Earth Mouth Remote sensing Artificial satellites Soil Coast expansion and shrinkage remote sensing runoff and sediment spatiotemporal analyses Yellow River delta (YRD)
	Satellite-Observed Evolution Dynamics of the Yellow River Delta in 1984-2018 期刊论文 OAI收割 IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING, 2020, 卷号: 13, 页码: 6044-6050 作者: Liu, Zhengjia; Xu, Nan; Wang, Jieyong \| 收藏 \| 浏览/下载：23/0 \| 提交时间：2021/03/16 Rivers Sediments Earth Mouth Remote sensing Artificial satellites Soil Coast expansion and shrinkage remote sensing runoff and sediment spatiotemporal analyses Yellow River delta (YRD)
	Regional Scale Determinants of Nutrient Content of Soil in a Cold-Temperate Forest 期刊论文 OAI收割 FORESTS, 2018, 期号: 4 作者: Tang, Tongtong; Yuan, Shusheng; Yu, Jinghua; Zhang, Aihua; Chen, Hao \| 收藏 \| 浏览/下载：18/0 \| 提交时间：2018/09/10 Daxing'an Mountains climatic factors soil nutrients forest types principal component analyses
	Evaluation of ECMWF's soil moisture analyses using observations on the Tibetan Plateau 期刊论文 iSwitch采集 JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2013, 卷号: 118, 期号: 11, 页码: 5304-5318 作者: Su, Z.; de Rosnay, P.; Wen, J.; Wang, L.; Zeng, Y. 收藏 \| 浏览/下载：27/0 \| 提交时间：2019/10/09 ECMWF Soil Analyses Tibetan Plateau ASCAT AMSR-E In-situ Observation
	Microbial functional diversity, metabolic quotient, and invertase activity of a sandy loam soil as affected by long-term application of organic amendment and mineral fertilizer 期刊论文 iSwitch采集 JOURNAL OF SOILS AND SEDIMENTS, 2011, 卷号: 11, 期号: 2, 页码: 271-280 作者: Hu, Junli; Lin, Xiangui; Wang, Junhua; Dai, Jue; Chen, Ruirui 收藏 \| 浏览/下载：35/0 \| 提交时间：2019/10/10 Biolog Eco-microplate Community level physiological profile (CLPP) Principal component analyses (PCA) Redundancy analysis (RDA) Soil basal respiration Soil microbial biomass C
	Land use dynamics and landscape change pattern in Hetao irrigation district, Inner Mongolia, China 会议论文 OAI收割 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：27/0 \| 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.