[1]刘新平,何玉惠,赵学勇,等.科尔沁沙地奈曼地区降水变化特征分析[J].水土保持研究,2011,18(02):155-158.
　LIU Xin-ping,HE Yu-hui,ZHAO Xue-yong,et al.Characteristics of Precipitation in Naiman Region of Horqin Sandy Land[J].Research of Soil and Water Conservation,2011,18(02):155-158.
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科尔沁沙地奈曼地区降水变化特征分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 18 期数: 2011年02期 页码: 155-158 栏目: 出版日期: 2011-04-20
Title:
Characteristics of Precipitation in Naiman Region of Horqin Sandy Land
作者:
刘新平1,2, 何玉惠1,2, 赵学勇1,2, 张铜会1,2, 李玉霖1,2, 云建英1,2
1. 中国科学院 寒区旱区环境与工程研究所奈曼沙漠化研究站, 兰州 730000;
2. 中国科学院 寒区旱区环境与工程研究所 极端环境生物抗逆特性与生物技术实验室, 兰州 730000
Author(s):
LIU Xin-ping1,2, HE Yu-hui1,2, ZHAO Xue-yong1,2, ZHANG Tong-hui1,2, LI Yu-lin1,2, YUN Jian-ying1,2
1. Naiman Desertification Research Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences (CAREERI, CAS), Lanzhou 730000, China;
2. Stress Ecophysiology and Biotechnology Laboratory, CAREERI, CAS, Lanzhou 730000, China
关键词:
奈曼地区; 降水变化特征; 降水概率
Keywords:
Naiman region; variation characteristic of precipitation; precipitation probability
分类号:
P426.61+4
摘要:
降水的分布特征和趋势分析对于研究区域水分动态和水资源合理评价具有重要的生态学意义。以奈曼旗气象局49 a的降水数据分析了该区域降水的变化趋势与特征，结果表明：奈曼地区49 a来平均降水量为351.7 mm，春季降水呈现逐年增加的趋势，而夏季、秋季和冬季降水逐年减少，夏季降水最多，为年平均降水的68.6%；年降水中以7月的降水量最多，占年降水总量的30.4%；降水量介于300~350 mm的年份最多，占28.6%，小于多年平均降水量的年份占63.3%。年降水300 mm以上的概率为67.4%，而大于多年平均降水量的概率仅为38.8%；降水年际变率较大，变异系数为25.1%，总体趋势是降水逐年减少，有趋于更干旱化的特点。
Abstract:
There are important ecological significance of analyzing distribution characteristics and trends of precipitation for study of regional water dynamics and rational evaluation of water resource. In the present study, the variable trends and characteristics of regional precipitation were analyzed by using 49-year precipitation data collected from Naiman Weather Bureau. The results show that the mean annual precipitation is 351.7 mm (during 1961-2009) in Naiman region. Precipitation increases in spring year by year, and decreases with years in summer, autumn and winter. Precipitation reaches maximum level in summer, which accounts for 68.6% of mean annual precipitation. Precipitation in July reaches maximum in a year, which represents 30.4% of the total annual precipitation. The proportion of year of 300～350 mm precipitation is common, and it accounts for 28.6%, while the year of annual precipitation less than mean annual precipitation accounts for 63.3%. Probability of annual precipitation more than 300 mm is 67.4%, while annual precipitation more than 351.7 mm only accounts for 38.8%. The interannual variability of precipitation is large, and the coefficient of variation is 25.1%. This indicates that total trends of precipitation decrease year by year, which shows a trend of aridization in this area.

参考文献/References:

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备注/Memo

收稿日期:2010-10-12;改回日期:2010-11-1。
基金项目:中国科学院西部之光西部博士项目（O928641001）；国家自然科学基金项目（40801036）；中科院寒旱所青年人才成长基金项目（51Y084951）；国家自然科学基金项目（40871004）；中国科学院西部之光西部博士项目（O828881001）
作者简介:刘新平（1978- ），男，甘肃瓜洲人，博士，副研究员，主要从事恢复生态学和生态水文学等方面的研究工作。E-mail：liuxinping@lzb.ac.cn

更新日期/Last Update: 1900-01-01