LI Lan,DING Wenrong.Runoff Variation and Its Response to Climate Change in the Upstream of Longchuanjiang River[J].Research of Soil and Water Conservation,2016,23(04):83-88,93.
龙川江上游径流量变化及其对气候变化的响应
- Title:
- Runoff Variation and Its Response to Climate Change in the Upstream of Longchuanjiang River
- Keywords:
- upstream of Longchuangjiang River; runoff; climatic change; response
- 分类号:
- P339
- 摘要:
- 基于1970—2012年龙川江上游小河口水文站的径流资料和楚雄的气象资料，运用M-K法、相关系数法、累积距平法等方法，分析了龙川江上游径流量、降水量和气温的年内、年际和年代际的变化以及径流量对气候变化的响应。结果表明：龙川江上游径流量年内分配极不均，在1994年后渐趋均匀，年径流量呈不显著的波动下降趋势，而且径流量在70，80年代和2010—2012年偏枯，90和00年代偏丰；年平均气温和年降水量都呈上升趋势，但后者的趋势不明显；年降水量对年径流量的影响很明显，而年平均气温对径流量的影响较小，四个季节中春季和秋季的径流量受降雨量变化的影响较大，降水量和气温的变化对夏季径流的影响都较为明显，而冬季相反。总之，不同季节的径流量对不同气候因素的响应是不同的。
- Abstract:
- Based on the hydrologic data of Xiaohekou, the upstream of Longchuanjiang River, and the meteorological data of Chuxiong from 1970 to 2012, we used the methods of accumulative anomalies, Mann-Kendall and correlation coefficient to analyze the variation of inner-annual, inter-annual and inter-decadal for the runoff of the upstream of Longchuanjiang River, precipitation, the runoff and its response to climatic change. The results indicated that:(1) the annual runoff distributed unevenly, and it gradually become even, and annual runoff showed a wavelike decrease, but it wasn’t obvious, and runoff volume was less than normal years in 1970s, 1980s and the the period from 2010 ot 2012. The runoff volume in 1990s and 2000s was more than normal years; (2) temperature and annual runoff had showed a wavelike increase, but the latter was indistinctive; (3) annual precipitation effects on annual runoff was obvious, but the annual average temperature had less effect on runoff, precipitation of spring and autumn had larger effect on runoff, influences of precipitation, and temperature on runoff were obvious in summer, but were just opposite in the winter. In summary, responses of runoff in different seasons to different climate factors are different.
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备注/Memo
收稿日期:2015-06-30;改回日期:2015-08-07。
基金项目:国家自然科学基金项目（41101099、41261044）；云南省社会发展科技计划（2012CA024）
作者简介:李澜(1990-),女,山东临沂人,硕士研究生,主要从事自然地理学研究工作。Email:lan900726@126.com