生态学杂志2012，Vol.31Issue(10)：2635-2643,9.
近51年来三江源区降水变化的空间差异
Spatial difference of precipitation variation in Three-River headwaters region of China in recent 51 years
摘要
Abstract
Based on the 1960-2010 precipitation data from 12 meteorological stations in the Three-River headwaters region, and by the methods of climatic linear regression, 5-year moving average, inverse distance weighted (IDW) interpolation, Morlet wavelet analysis, and rescaled range analysis, this paper analyzed the spatiotemporal variations of precipitation and its future tendency in this region. In 1960-2010, the annual precipitation in this region presented an overall increasing trend, being lower in the 1960s, 1970s, and 1990s, obviously higher in the 1980s, and markedly increased after 2000. The precipitation in spring, summer, and winter, especially in spring, exhibited an increasing trend, but that in autumn had a decreasing trend. The variation trend of the precipitation in different catchments was not the same in four seasons. In most areas of this region, the precipitation had an increasing trend, being higher in the north and lower in the south, but less difference in the east and west. The precipitation in different catchments had different vibration periods during a certain time series. A similar variation trend was observed in the annual and seasonal precipitation in the region between the past and the future, but the continual strength of the precipitation somewhat differed with the catchments.关键词
三江源区/降水/空间差异/Morlet小波分析/R/S分析Key words
the Three-River headwaters region/ precipitation/ spatial difference/ Morlet wavelet analysis/ rescaled range analysis.分类
天文与地球科学引用本文复制引用
李珊珊,张明军,汪宝龙,李小飞,骆书飞..近51年来三江源区降水变化的空间差异[J].生态学杂志,2012,31(10):2635-2643,9.基金项目
国家自然科学基金项目(41161012)和教育部新世纪优秀人才支持计划项目(NCET-10-0019)资助. （41161012）
