其他文献
The dynamics of water and energy fluxes in the high mountains of central Norway was studied along micro-spatial topographic gradients in different altitudes and regions of the Scandes. Landscape ecolo
The difference between ground soil and air temperature (Ts-Ta) was studied by using the data of ground and air temperature of 99 stations over the Qinghai–Xizang (Tibet) Plateau from 1960 to 2000,and
The total precipitation of the highest 1 day, 3 day, 5 day and 7 day precipitation amount (R1D, R3D, R5D and R7D) in the Yangtze River basin was analyzed with the help of linear trend analysis and con
Based on temperature reconstruction and proxy data from 14 sites in the Northern Hemisphere, this paper focused on comparing the cycles of temperature variations between the Arctic and other areas, in
This paper has studied the change of streamflow and the impact of climatic vari- ability conditions on regional hydrological cycle in the headwater of the Tarim River Basin. This study investigates po
随着电子商务的不断发展,软件工程的工具技术和方法越来越重要。文章主要介绍了电子商务的工程处理和软件工程应用中所用到的工具和技术。软件工程是一种应用于系统的,标准化的,可测量的方法用于软件的发展,前进和维护处理的学科工程。有很多的工具和技术应用于软件工程。
文中着重讨论了城市生态系统健康的评价方法及其应用,采用熵权法赋予指标权重,应用模糊数学方法建立评价模型,以重庆市为例进行城市生态系统健康评价.首先,以北京,天津,上海作为参照城市,进行横向评价,评价结果表明4个城市均处于亚健康状态;其次,对重庆市2001~2004年生态系统健康状况进行纵向评价,评价结果表明,重庆市生态系统健康状况正从亚健康状态向健康状态发展;最后,对重庆市都市圈所包括的9个区进行
2007年11月28日下午,《地理信息世界》杂志第五次编委会议在北京中苑宾馆召开。会议由杂志编委会主任喻永昌主持,杂志主编陈军讲话,杂志副主编鲍英华讲话并宣读关于调整编委的说明,