| 念青唐古拉山西段高海拔陆-气系统水热特征 |
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| 引用本文： | 谢健,刘景时,杜明远,康世昌,贾书刚,王忠彦,.念青唐古拉山西段高海拔陆-气系统水热特征[J].地理科学进展,2010,29(2):151-158. |
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| 作者姓名： | 谢健 刘景时 杜明远 康世昌 贾书刚 王忠彦 |
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| 作者单位： | 中国科学院青藏高原研究所;中国科学院研究生院;日本农业环境技术研究所; |
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| 基金项目： | 973“我国冰冻圈动态过程及其对气候、水文和生态的影响机理与适应对策”(2007CB411503);;欧盟第六框架项目“BRAHMATWINN”(036952);;国家自然科学基金(40561002);;日本环境省项目“利用青藏高原实施温暖化的早期发现和预测”;;中国科学院“百人计划”项目 |
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| 摘 要： | 利用实测的念青唐古拉山脉南坡海拔4800 m和5333 m，以及北坡5400 m的土壤温、湿度和地表气温一年的数据，对该地区水热特征作了初步分析，结果表明：地、气温差冬季大夏季小，且相对邻近地区偏大。同时地温与气温有良好相关，但随深度增加，相关系数减小。土壤热力梯度的方向低海拔由下而上，高海拔则相反。土壤湿度高海拔略大于低海拔，干季和湿季分别受冻融过程和印度洋季风降水影响。高海拔冻结期比低海拔长3~4个月，其下层土壤湿度在冻融交替期表现一个剧烈的跃变现象。念青唐古拉山南、北坡海拔相近区域相同层位土壤温度差异在0~8℃之间。南坡土壤温度年平均高于北坡3~4℃。南坡冻结比北坡晚而融化比北坡早，上层土壤湿度南坡小于北坡，而下层土壤湿度南坡大于北坡，南北坡水热过程存在明显差异。
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| 关 键 词： | 念青唐古拉 高海拔山地 陆—气系统 土壤温度 土壤湿度 水热特征 |
Hydrothermal Characteristics of the Land-Atmospheric System in an Alpine Area of West Nyainqentanglha Mountains |
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| XIE Jian,LIU Jingshi,DU Mingyuan,KANG Shichang,JIA Shugang,WANG Zhongyan.Hydrothermal Characteristics of the Land-Atmospheric System in an Alpine Area of West Nyainqentanglha Mountains[J].Progress in Geography,2010,29(2):151-158. |
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| Authors: | XIE Jian LIU Jingshi DU Mingyuan KANG Shichang JIA Shugang WANG Zhongyan |
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| Institution: | 1. Institute of Tibetan Plateau Research;CAS;Beijing 100085;China;2. Graduate University of Chinese Academy of Sciences;Beijing 100080;3. Department of Agro-Meteorology;National Institute for Agro-Environmental Sciences;Tsukuba 3050053;Japan |
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| Abstract: | A preliminary study was carried out on the hydrothermal characteristics in the Nyainqentanglha mountainous region,using one-year observation data of air temperature,three layers of soil temperature and moisture from two sites at 4800 m a.s.l. and 5333 m a.s.l. on the southern slope,and one site at 5400 m a.s.l. on the northern slope. The results indicated that the differences between soil and air temperatures were greater in winter than in summer,and they were generally larger compared to the nearby areas. ... |
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| Keywords: | Nyainqentanglha alpine mountain land-atmospheric system soil temperature soil moisture hydrothermal characteristics |
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