[1]刘德坤,王军邦,齐述华.基于湿润指数的近35年青海省干湿状况变化分析[J].水土保持研究,2014,21(02):246-250,256.
　LIU De-kun,WANG Jun-bang,QI Shu-hua.Analysis on Dry Trend Based on Moisture Index in Qinghai Province in the Recent 35 Years[J].Research of Soil and Water Conservation,2014,21(02):246-250,256.
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基于湿润指数的近35年青海省干湿状况变化分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 21 期数: 2014年02期 页码: 246-250,256 栏目: 出版日期: 2014-04-28
Title:
Analysis on Dry Trend Based on Moisture Index in Qinghai Province in the Recent 35 Years
作者:
刘德坤1,2, 王军邦2, 齐述华1
1. 江西师范大学 地理与环境学院, 南昌 330022;
2. 中国科学院 地理科学与资源研究所 生态系统网络观测与模拟重点实验室, 北京 100101
Author(s):
LIU De-kun1,2, WANG Jun-bang2, QI Shu-hua1
1. School of Geography and Environment, Jiangxi Normal University, Nanchang 330022, China;
2. Key Laboratory of Ecosystem Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
关键词:
青海省; 湿润指数; 变化趋势
Keywords:
Qinghai Province; moisture index; change trend
分类号:
S161.3
摘要:
利用青海省1971—2004年1 km分辨率空间插值气象资料，计算了基于FAO推荐的Penman-Monteith方法的潜在蒸散及Thornthwaite湿润指数，分析了近35 a来气温、降水量及湿润指数的时空变化格局及趋势。结果表明：青海省总体上表现为较为显著的暖化和不显著的干旱化趋势；增温趋势以西部较高，而东南部较低；降水在西部的唐古拉和中部的柴达木盆地表现为增加趋势，而东南大部分地区表现为减少趋势；综合考虑辐射、气温和降水等气候要素的湿润指数表明，在西部唐古拉地区、柴达木盆地等干旱区表现为暖湿化趋势，而东南部的澜沧江源、黄河源等地区表现为干旱化趋势，但与降水变化趋势一样，其变化趋势的统计学特征并不显著。
Abstract:
This study analyzes the spatiotemporal trends of wetness of Qinghai Province in the recent 35 years (1971—2004) by using the potential evapotranspiration and Thornthwait moisture index (MI) derived from the Penman-Monteith methods recommended by FAO and 1 km spatially interpolated meteorological data. The results suggested a significant warming and indistinctive drying trend overall, while the degree of warming decreases from west to southeast in recent 35 years. Precipitation increases significantly in Tanggula and Chaidamu in the west and decreases in the southeast. However, the moisture index, which integrated the effect of solar radiance, temperature, precipitation, has almost the same spatial patterns of inter-annual variation as the precipitation. In the desert areas, such as Tanggula of western Qinghai and Chaidamu of central Qinghai, the MI increases with a warmer and wetter trend, while in well-vegetated regions near Lantsang, Yellow River, a dryer trend exits with insignificant statistics.

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备注/Memo

收稿日期:2013-10-29;改回日期:2013-11-12。
基金项目:中国科学院西部行动计划（三期）项目（KZCX2-XB3-08-01）；国家重点基础研究发展计划课题（2009CB421105）
作者简介:刘德坤(1986-),男,江西上犹人,硕士,主要从事遥感与地理信息系统应用研究。E-mail:kdl010163@163.com
通讯作者:王军邦(1974-),男,青海湟中人,博士,主要从事全球生态学、生态模型领域的研究。E-mail:jbwang@igsnrr.ac.cn

更新日期/Last Update: 1900-01-01