近50年中国北方土壤湿度的区域演变特征

doi:10.11821/xb20037s010

地理学报 ›› 2003, Vol. 58 ›› Issue (7s): 83-90.doi: 10.11821/xb20037s010

近50年中国北方土壤湿度的区域演变特征

郭维栋¹, 马柱国¹, 姚永红²

1. 中国科学院东亚区域气候-环境重点实验室，中国科学院大气物理研究所东亚中心，北京，100029
2. 南京大学大气科学系，南京，210093

收稿日期:2003-03-10 修回日期:2003-08-09 出版日期:2003-12-25 发布日期:2010-09-09
作者简介:郭维栋 (1972-), 博士后, 主要从事气候与环境变化的诊断分析。E-mail: guowd@tea.ac.cn
基金资助:
国家重点基础研究发展规划项目(G1999043400)

Regional Characteristics of Soil Moisture Evolution in Northern China over Recent 50 Years

GUO Weidong¹, MA Zhuguo¹, YAO Yonghong²

1. Chinese Academy of Sciences Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, START Regional Center for East Asia, Institute of Atmospheric Physics, CAS, Beijing 100029, China;
2. Department of Atmospheric Sciences, Nanjing University, Nanjing 210093, China

Received:2003-03-10 Revised:2003-08-09 Online:2003-12-25 Published:2010-09-09
Supported by:
National Key Project for Basic Research, No.G1999043400

摘要/Abstract

摘要：

利用中国100E以东139站1951~1999年逐月反演的土壤湿度资料 (0cm~100cm, 共11层)，重点分析了中国东北、华北和西北东部三个地区的土壤湿度在年际—年代际时间尺度上的演变特征。研究表明：不同层次上土壤湿度的变化特征有很好的一致性。华北地区在20世纪60年代末到70年代末为显著偏湿的阶段，之后发生突变直到90年代末土壤湿度持续降低并以90年代中后期为甚。东北区在70年代前后为一显著的干旱时段，此后土壤湿度有所恢复，但90年代以来该区的土壤湿度仍然较低。值得注意的是，华北夏季土壤湿度自80年代以来并未有明显的下降。另外，北方地区土壤在秋季普遍存在干化趋势，其中以东北地区最为显著。本文还分析了土壤湿度演变趋势的地理分布特征。

关键词: 中国北方, 土壤湿度, 干旱化, 气候变化

Abstract:

Regional characteristics of soil moisture evolution in northern China are analyzed based on the monthly retrieved soil moisture data of 139 stations from 1951 to 1999. The results show that evolution of soil moisture at different levels coincides with each other very well. North China experienced a wet period during the late 1960s to late 1970s. An abrupt change occurred at the end of the 1970s and the soil moisture began to decrease. The descending trend of soil moisture in North China is especially evident in the late 1990s. For Northeast China, the 1970s is a distinct dry period. In terms of seasonal trend, however, no apparent decrease of soil moisture has been found since 1980 in North China. In addition, a notable phenomenon is the general decrease of soil moisture in autumn over wide regions of northern China, especially in Northeast China.

Key words: northern China, soil moisture, aridity, climate change

郭维栋,马柱国,姚永红. 近50年中国北方土壤湿度的区域演变特征[J]. 地理学报, 2003, 58(7s): 83-90.

GUO Weidong, MA Zhuguo, YAO Yonghong. Regional Characteristics of Soil Moisture Evolution in Northern China over Recent 50 Years[J]. Acta Geographica Sinica, 2003, 58(7s): 83-90.

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近50年中国北方土壤湿度的区域演变特征

Regional Characteristics of Soil Moisture Evolution in Northern China over Recent 50 Years

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