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浏览/检索结果: 共6条，第1-6条 帮助 限定条件 发表日期：2009    内容类型：期刊论文     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 Effects of land use on soil total and light fraction organic, and microbial biomass C and N in a semi-arid ecosystem of northwest China 期刊论文 GEODERMA, 2009, 卷号: 153, 期号: 1-2, 页码: 285-290 作者:  Wang, XL;  Jia, Y;  Li, XG;  Long, RJ;  Ma, QF 收藏  |  浏览/下载：5/0  |  提交时间：2015/12/14 Alfalfa grassland  Alfalfa-crop rotation  Conventional farming  Microbial biomass  Light fraction C  Soil organic C  Soil total N   Land-use change and its ecological responses: a pilot study of typical agro-pastoral region in the Heihe River, northwest China 期刊论文 ENVIRONMENTAL GEOLOGY, 2009, 卷号: 58, 期号: 7, 页码: 1549-1556 作者:  Du, Ziqiang;  Shen, Yudan;  Wang, Jian;  Cheng, Wenshi 收藏  |  浏览/下载：15/0  |  提交时间：2019/10/08 Land use change  Landscape pattern  Agro-pastoral region  Ecological response   Dynamics of soil respiration in sparse ulmus pumila woodland under semi-arid climate 期刊论文 Ecological research, 2009, 卷号: 24, 期号: 4, 页码: 731-739 作者:  Jin, Hong-Mei;  Sun, Osbert Jianxin;  Luo, Zhong-Kui;  Liu, Jin 收藏  |  浏览/下载：21/0  |  提交时间：2019/05/10 Ulmus pumila woodland  Grassland  Semi-arid region  Soil respiration  Microbial activity   Degraded vegetation and wind erosion influence soil carbon, nitrogen and phosphorus accumulation in sandy grasslands 期刊论文 PLANT AND SOIL, 2009, 卷号: 317, 期号: 1-2, 页码: 79-92 作者:  Li, Feng-Rui;  Zhao, Wen-Zhi;  Liu, Ji-Liang;  Huang, Zhi-Gang 收藏  |  浏览/下载：16/0  |  提交时间：2019/10/08 Above- and below-ground biomass  Ecosystem functioning  Habitat degradation  Plant litter  Soil nutrient availability  Wind erosion   Optimization of ecosystem model parameters using spatio-temporal soil moisture information 期刊论文 ecological modelling, 2009 Zhu, Lin; Chen, Jing M.; Qin, Qiming; Li, Jianping; Wang, Lianxi 收藏  |  浏览/下载：2/0  |  提交时间：2015/11/10 Parameter optimizing  Soil moisture  Ensemble Kalman Filter  Remote sensing  ENSEMBLE KALMAN FILTER  SURFACE DATA ASSIMILATION  PERPENDICULAR DROUGHT INDEX  REMOTE-SENSING INPUTS  WATER-CONTENT  STOMATAL CONDUCTANCE  ROOT DISTRIBUTIONS  SEASONAL-VARIATION  VEGETATION INDEX  CANOPY   Contrastive analysis of valuation methods of ecosystem services value-A case study of zhifanggou watershed in a hilly and gully region of loess plateau 期刊论文 yingyong jichu yu gongcheng kexue xuebaojournal of basic science and engineering, 2009 Han, Peng; Si, Jin; Wang, Yinggang 收藏  |  浏览/下载：2/0  |  提交时间：2015/11/16