横断山区土壤相对湿度时空分异  

Spatial and Temporal Variation of Soil Relative Moisture in Hengduan Mountainous Region, China

作　　者：朱国锋[1,2,3] 蒲焘[4] 何元庆[2,4] 张涛[2,3] 杜建括[2,3] 辛惠娟[2,3] 牛贺文[4] 

机构地区：[1]西北师范大学地理与环境科学学院,甘肃兰州730000 [2]中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室,甘肃兰州730000 [3]中国科学院研究生院,北京100049 [4]兰州大学资源环境学院,甘肃兰州730000

出　　处：《地理科学》2012年第7期872-877,共6页Scientia Geographica Sinica

基　　金：国家自然科学基金(40971019);国家自然科学基金项目(90511007;40801028)资助;国家重点基础研究发展(973)计划(2007CB411501);国家自然科学基础人才培养基金冰川学冻土学特殊学科点(J0630966);中国科学院研究生科技创新与社会实践资助专项;中国科学院重要方向性项目(KZCXZ-YW-317);中国科学院"西部之光"人才培养计划"西部博士资助项目"(O828A11001);冰冻圈科学国家重点实验室自主项目

摘　　要：以1992～2010年横断山区16个观测站土壤相对湿度资料为基础,通过Kriging插值法分析土壤相对湿度季节分异和空间分异特征。结果表明:横断山区年土壤相对湿度自1992年以来整体呈波动增加趋势,年际变化倾向率为0.51%/a;横断山区土壤相对湿度表现为西南和东北部较高,东南和西北部较低,中部土壤相对湿度增加趋势强于边缘,深层土壤的相对湿度整体大于浅层土壤。春、夏季土壤相对湿度增加趋势比秋、冬季明显。Based on soil relative moisture data in ten days from 16 observation stations of Hengduan Mountain- ous Region in 1992-2010, spatial and temporal changes of soil relative moisture were analyzed in the paper with Kriging interpolation method. The results showed that the soil relative moisture in Hengduan Mountain- ous Region had been in a increasing tendency since 1992 with the inclination rate of 0.5 l%/a. The soil relative moisture were high relatively in＂ the southwest and the northeast of Hengduan Mountains whereas low in the southeast and the northwest. The values of soil relative moisture in deep soils were higher than that in shallow soil. As far as the seasonal change, the increasing trend of soil relative moisture in spring and summer were greater than that in autumn and winter.

关 键 词：土壤相对湿度 横断山区 Kriging插值法 时空分异 

分 类 号：P426.1[天文地球—大气科学及气象学] P467