QQ客服 官方微博 反馈留言

浏览/检索结果: 共5条，第1-5条 帮助 限定条件 内容类型：EI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 The impact of human activities on natural capital and ecosystem services of natural pastures in North Xinjiang, China EI期刊论文 2012 作者:  Yan Maochao 收藏  |  浏览/下载：20/0  |  提交时间：2012/11/23 Ecosystems  Animals  Behavioral research  Carbon dioxide  Computer simulation  Economics  Food supply  Forestry  Geologic models  Productivity  Soil conservation  Soil moisture   Ecological and environmental evaluation for water and soil losscomprehensive harness in Loess hilly region EI期刊论文 2012 Wang Bing; Zhang Guanghui; Liu Guobin; Yang Qinke; Yang Yanfen 收藏  |  浏览/下载：35/0  |  提交时间：2014/12/31 Geologic models  Artificial intelligence  Control  Decision support systems  Ecology  Models  Restoration  Soil conservation  Soils   A modelling investigation into the economic and environmental values of 'perfect' climate forecasts for wheat production under contrasting rainfall conditions EI期刊论文 2008 作者:  Yu Qiang 收藏  |  浏览/下载：7/0  |  提交时间：2012/06/11 Agriculture  Economic and social effects  Management  Nitrogen fertilizers  Optimization  Rain   Progress, influence and perspectives of emergy theories in China, in support of environmentally sound economic development and equitable trade EI期刊论文 2008 作者:  Yan Maochao 收藏  |  浏览/下载：18/0  |  提交时间：2012/06/11 Decision making  Energy management  Energy utilization  Environmental management  Sustainable development   Management implications to water resources constraint force on socio-economic system in rapid urbanization: A case study of the Hexi Corridor, NW China EI期刊论文 2007 作者:  Bao Chao;  Huang Jin-Chuan;  Fang Chuang-Lin 收藏  |  浏览/下载：33/0  |  提交时间：2012/06/11 Economic and social effects  Sustainable development  Water conservation  Water management  Water supply