理学 >>> 地理学 >>> 自然地理学 人文地理学 地图学 地理学其他学科
搜索结果: 1-8 共查到地理学 the ecosystem相关记录8条 . 查询时间(0.046 秒)
A widespread decrease of the topsoil carbon content was observed over England and Wales during the period 1978–2003 in the National Soil Inventory (NSI), amounting to a carbon loss of 4.44 Tg yrW...
Ecosystem services are premises for human beings to exist and develop in the world, and it is of importance to study effects of land use change on ecosystem functions. Songnen plain, locat...
Al in Glycine max var. + Pasalum thunbergii. On the basis of the study, we can conclude that land cover change affects both distributions and circulations in the terrestrial ecosystem, an...
In this paper, the CO2 concentrations profile from 1.5 m depth in soil to 32 m height in atmosphere were measured from July 2000 to July 2001 in an alpine grassland ecosystem located in th...
Based on more than 300 forest sample plots surveying data and forestry statistical data, remote sensing information from the NOAA AVHRR database and the daily meteorological data of 300 st...
According to differences in vegetation types and their coverage, combining the latest research, using theory and method on the value of vegetation ecosystem services, this paper not only c...
Using the method of Constanza R, the annual value of ecosystem services of Macao was 3.302×106 US dollars in 1983, equivalent to 26.5250×106 MOP, when using the currently monetary valuatio...
The objectives of Integrated Ecosystem Assessment for Western Development of China includes: (1) providing scientific basis for ecosystem protection, ecosystem management and ecological co...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...