【摘 要】
：
Ecological security is a vital problem that people all over the world today have to face and solve, and the situation of ecological security is getting more and more severe and has begun to impede hea
【出 处】
：
Chinese Geographical Science
论文部分内容阅读
Ecological security is a vital problem that people all over the world today have to face and solve, and the situation of ecological security is getting more and more severe and has begun to impede heavily the sustainable development of social economy.
其他文献
前几天,我从网上下载了一套关于AutoCAD2002的电子教程,可惜都是一个个的Word文件,这样浏览起来很不方便,而且共享给那些未安装Word的其他同事也非常麻烦。忽然,我想到要是能打包成EXE格式的文件就好了,于是就有了下面的实战。
The Integrated Environmental Monitoring (IEM) project, part of the Asia-Pacific Environmental Innovation Strategy (APEIS) project, developed an integrated environmental monitoring system that can be u
Variation characteristics of temperature and precipitation in January and July and annual mean temperature and annual precipitation are analyzed with the help of cumulative anomalies, Mann-Kendall ana
Using geographic information system (GIS) techniques and the newest seasonal and annual average precipitation data of 679 meteorological stations from 1971 to 2000, the multiple regressions equations
The role of remote sensing in phenological studies is increasingly regarded as a key to understand large area seasonal phenomena. This paper describes the application of Moderate Resolution Imaging Sp
利用我国北极黄河站所在地,德国Koldwey站1994—2003年的逐时常规气象资料,对北极苔原Ny lesund地区短期气候特征进行了初步分析。结果表明,由于受北大西洋暖流的影响,该地是北极同纬度温度最高的地区。岛上气候温暖湿润,即使在隆冬季节,日平均气温都可以升至0℃以上。全年平均风力较小,以东南(SE)风居多。该地区平均增温速度为0. 68℃/10a,是北极增温较快的地区之一。与同期我国北
依据2003年8月1日到2003年12月31日同步观测得到的地面紫外辐射资料,分析了紫外辐射和云量的关系,在实际天气条件下,紫外辐射变化没有我们所认为的那种有特别明显的规律。云对到达地面的紫外辐射可能有着十分复杂和重要的作用。
The quality dimension of the urban living space was addressed much earlier abroad; nevertheless, it has not been studied in the Chinese academia up to date, as evidenced by the limited research litera
Rock weathering plays an important role in studying the long-term carbon cycles and global climatic change. According to the statistics analysis, the Huanghe (Yellow) River water chemistry was mainly
Using NCEP/NCAR reanalysis data and monthly precipitation over 160 conventional stations in China, analyses of moisture transport characteristics and corresponding precipitation variation in the east