Studies on eco-environmental change in source regions of the Yangtze and Yellow Rivers of China:present and future

论文摘要

The source regions of the Yangtze and Yellow Rivers are important in the field of eco-environmental change research in China because of its distinct alpine ecosystem and cryosphere environment. At present, there are three different concepts on the extent of source areas of the Yangtze and Yellow Rivers: hydrological, geographical, and eco-environmental. Over the past decades, annual average air temperature has warmed significantly; moreover, the temperature rise rate increases notably with increase of time of the data series. Annual precipitation has no obvious increase or decrease trend, and the climate has become warm and dry in the source regions. As a result, the cryosphere in the regions has shrunk significantly since 1960 s. A warm and dry climate and changing cryosphere together induced a substantial declination of alpine wetlands, marked decrease in river runoff, significant degradation of alpine grassland, and a reduction of engineering stability.The ecological environment, however, has a tendency for restoration in the regions because the climate has become gradually warm and wet since 2000. Thus, studies on eco-environmental change is transforming from a single element to multidisciplinary integration. Climate change-cryopshere change-physical and socioeconomic impacts/risk-adaptation constitute a chain of multidisciplinary integration research.

论文目录

文章来源

类型: 期刊论文

作者: JianPing Yang

来源: Sciences in Cold and Arid Regions 2019年03期

年度: 2019

分类: 基础科学,工程科技Ⅰ辑

专业: 环境科学与资源利用

单位: State Key Laboratory of Cryospheric Sciences,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences

基金: supported by the Strategic Priority Research Program of the Chinese Academy of Sciences,Grant No.XDA23060704

分类号: X171.1

页码: 173-183

总页数: 11

文件大小: 485K

下载量: 25

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