Influences of climate change and human activities on Tarim River runoffs in China over the past half century

被引:0
作者
Haiying Zhou
Xiaolei Zhang
Hailiang Xu
Hongbo Ling
Pujia Yu
机构
[1] Xinjiang Institute of Ecology and Geography Chinese Academy of Science,
[2] Graduate University of Chinese Academy of Sciences,undefined
[3] Xinjiang Tarim River Basin Management Bureau,undefined
来源
Environmental Earth Sciences | 2012年 / 67卷
关键词
Climate change; Human activities; Runoff; Tarim River;
D O I
暂无
中图分类号
学科分类号
摘要
The changes in annual runoff of the three original rivers and the mainstream of Tarim River were analyzed by the non-parametric tests based on the hydrologic data during the period of 50 years. Using hydrologic data, meteorological data and the fitted equation, the impacts of climate change and human activities on annual runoff of the mainstream were assessed. Based on the analysis, the following conclusions can be drawn: (1) headstream runoff has increased in the past 50 years, and has sharply jumped after 1990; (2) mainstream runoff decreased progressively in the past 50 years, which indicated that interference from human activities was the main cause for the decreasing runoff. This had greater negative influence than positive influence, which caused the mainstream average runoff to decrease by 5.4 × 108 m3 from 1990 to 2008 as compared to 1957–2008; (3) if human activities remained at pre-1990 levels, climate change alone would have caused the runoff of mainstream of Tarim River to increase by 5.4 × 108 m3 annually in the past 20 years; (4) if the climate had remained at pre-1990 conditions, human activities alone would have caused the runoff of mainstream of Tarim River to increase by 5.4 × 108 m3 annually over the past 20 years. However, mainstream average runoff was 42.6 × 108 m3 from 1990 to 2008 with the negative effects of human activities masked by the larger, positive effect of climate changes. The results in this paper provide a scientific basis for conservation strategies, sustainable management, and ecological restoration of the Tarim River Basin.
引用
收藏
页码:231 / 241
页数:10
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