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浏览/检索结果: 共4条，第1-4条 帮助 限定条件 发表日期：2007    学科主题：Ecology     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 Factors associated with farmland area changes in arid regions: a case study of the Shiyang River basin, northwestern China 期刊论文 FRONTIERS IN ECOLOGY AND THE ENVIRONMENT, 2007, 卷号: 5, 期号: 3, 页码: 139-144 作者:  Li, XY, Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China;  Li, XY;  Xiao, DN;  He, XY;  Chen, W 收藏  |  浏览/下载：7/0  |  提交时间：2011/09/23 Ecological footprint and biological capacity time series assessment for a forest region in northeastern China 期刊论文 INTERNATIONAL JOURNAL OF SUSTAINABLE DEVELOPMENT AND WORLD ECOLOGY, 2007, 卷号: 14, 期号: 5, 页码: 493-502 作者:  Liu, M;  Hu, Y;  Li, X;  He, HS;  Xu, C 收藏  |  浏览/下载：14/0  |  提交时间：2011/09/23 Ecological Footprint  Time Series  Forest Resource Change  Songling   The unique skeleton of siliceous sponges (Porifera; Hexactinellida and Demospongiae) that evolved first from the Urmetazoa during the Proterozoic: a review 期刊论文 BIOGEOSCIENCES, 2007, 卷号: 4, 期号: 2, 页码: 219-232 作者:  Mueller, W. E. G.;  Li, Jinhe;  Schroeder, H. C.;  Qiao, Li;  Wang, Xiaohong 收藏  |  浏览/下载：11/0  |  提交时间：2010/12/24 Early Animal Evolution  Innate Immune Defense  Suberites-domuncula  Geodia-cydonium  Lubomirskia-baicalensis  Living Fossils  Metazoa  Silicatein  Expression  Genes   Ecological footprint and biological capacity time series assessment for a forest region in northeastern China 期刊论文 INTERNATIONAL JOURNAL OF SUSTAINABLE DEVELOPMENT AND WORLD ECOLOGY, 2007, 卷号: 14, 期号: 5, 页码: 493-502 Liu, M; Hu, Y; Li, X; He, HS; Xu, C; Zhang, W 收藏  |  浏览/下载：16/0  |  提交时间：2011/09/23 ecological footprint  time series  forest resource change  songling