QQ客服 官方微博 反馈留言

浏览/检索结果: 共3条，第1-3条 帮助 限定条件 学科主题：Environmental Sciences     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 Potential distribution of Abies, Picea, and Juniperus species in the sub-alpine forest of Minjiang headwater region under current and future climate scenarios and its implications on ecosystem services supply 期刊论文 ECOLOGICAL INDICATORS, 2021, 卷号: 121, 页码: - 作者:  Naudiyal, Niyati;  Wang, Jinniu;  Ning, Wu;  Gaire, Narayan Prasad;  Peili, Shi 收藏  |  浏览/下载：28/0  |  提交时间：2021/02/05 PLANT COMMUNITY RESPONSE  ECOLOGICAL NICHE MODELS  TIBETAN PLATEAU  UPPER REACHES  ENVIRONMENTAL NICHE  LAND-USE  VEGETATION DISTRIBUTION  MEDICINAL-PLANT  MOUNTAIN AREAS  CHANGE IMPACTS   Factors regulating trophic status in a large subtropical reservoir, China 期刊论文 ENVIRONMENTAL MONITORING AND ASSESSMENT, 2010, 卷号: 169, 期号: 1-4, 页码: 237-248 作者:  Xu, Yaoyang;  Cai, Qinghua;  Han, Xinqin;  Shao, Meiling;  Liu, Ruiqiu 收藏  |  浏览/下载：52/9  |  提交时间：2010/12/23 Trophic state  Hydrological factors  Three-Gorges Reservoir  Empirical models   SPATIALIZATION MODEL OF POPULATION BASED ON DATASET OF LAND USE AND LAND COVER CHANGE IN CHINA 期刊论文 The spatialization of population of counties in China is significant. Firstly, we can gain the estimated values of population density adaptive to different kinds of regions. Secondly, we can integrate effectively population data with other data including natural resources, environment, society and economy, build I km GRIDs of natural resources reserves per person, population density and other economic and environmental data, which are necessary to the national management and macro adjustment and control of natural resources and dynamic monitoring of population. In order to establish population information system serving national decision-making, three steps ought to be followed: 1) establishing complete geographical spatial data foundation infrastructure including the establishment of electric map of residence with high resolution using topographical map with large scale and high resolution satellite remote sensing data, the determination of attribute information of housing and office buildings, and creating complete set of attribute database and rapid data updating; 2) establishing complete census systems including improving the transformation efficiency from census data to digital database and strengthening the link of census database and geographical spatial database, meanwhile, the government should attach great importance to the establishment and integration of population migration database; 3) considering there is no GIS software specially serving the analysis and management of population data, a practical approach is to add special modules to present software system, which works as a bridge actualizing the digitization and spatialization of population geography research., 2002, 卷号: 12, 期号: 2, 页码: 114-119 作者:  Deng Xiang-zheng 收藏  |  浏览/下载：274/81  |  提交时间：2011/06/10 spatialization models  population models  LUCC dataset  population spatialization  Deqing County