|
|||||
|
|
| 中国土壤热通量的时空分布特征研究 | |
| 引用本文： | 张宏,胡波,刘广仁,王跃思,赵瑞霞.中国土壤热通量的时空分布特征研究[J].气候与环境研究,2012,17(5):515-522. |
| 作者姓名： | 张宏 胡波 刘广仁 王跃思 赵瑞霞 |
| 作者单位： | 1. 中国科学院大气物理研究所大气边界层物理和大气化学国家重点实验室,北京 100029;中国气象局气象探测中心,北京 100081 2. 中国科学院大气物理研究所大气边界层物理和大气化学国家重点实验室,北京,100029 3. 国家气象中心,北京,100081 |
| 基金项目： | 中国科学院知识创新工程重大项目KZCX1-YW-06,国家重点基础研究发展计划2007CB407303,国家气象中心预报员专项 |
| 摘 要： | 利用中国生态系统研究网络(CERN)的17个野外台站2004～2007年的实测土壤表层热通量资料,分析了土壤表层热通量的季节和空间变化规律。土壤热通量从2月份开始由负值转变为正值,9月份左右开始由正值转变为负值,在3～8月份土壤热通量的值都为正值,12月至次年1月土壤热通量都为负值。空间分布上,东北地区和西北地区季节变化明显,年变幅比较大,长江流域地区夏季增加幅度小,年变化幅度也比较小,青藏高原地区四季都相对为低值地区,年变幅比较小,总的空间变化趋势是春夏季北高南低,秋冬季节南高北低。土壤热通量年合计值在东北黑土地地区、西北荒漠地区、黄土高原陕北地区和四川盆地地区是高值区,长江流域下游和黄河流域中下游冲积而成的区域为负值区。研究结果为进一步研究土壤的生态环境形成和变化提供了参考依据。 |
| 关 键 词： | 中国 土壤热通量 时空分布 特征 |
| 收稿时间： | 2010/9/26 0:00:00 |
| 修稿时间： | 2012/7/20 0:00:00 |
Temporal and Spatial Characteristics of Soil Heat Flux in China |
|
| ZHANG Hong,HU Bo,LIU Guangren,WANG Yuesi and ZHAO Ruixia.Temporal and Spatial Characteristics of Soil Heat Flux in China[J].Climatic and Environmental Research,2012,17(5):515-522. | |
| Authors: | ZHANG Hong HU Bo LIU Guangren WANG Yuesi and ZHAO Ruixia |
| Institution: | State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy Sciences, Beijing 100029;Meteorological Observation Centre of China Meteorological Administration, Beijing 100081;State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy Sciences, Beijing 100029;State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy Sciences, Beijing 100029;State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy Sciences, Beijing 100029;National Meteorological Centre, China Meteorological Administration, Beijing 100081 |
| Abstract: | The authors used soil heat flux data observed at 17 stations of the Chinese Ecosystem Research Network (CERN) from 2004 to 2007 to analyze the seasonal and spatial variation of the soil surface heat flux. The soil heat flux changed from negative to positive at the beginning of February and became negative again around September. It remained positive from March to August then became negative from December to January. The soil heat flux showed seasonal variation over the northeast and northwest regions of China while it had little seasonal variation over the Yangtze River basin. Over the plateau region, the heat flux was relatively small and varied only slightly throughout the year. The general spatial distribution pattern of the soil heat flux over China was larger in northern China in spring and summer and in southern China during fall and winter. The annual mean soil heat flux was higher over the black land areas of northeast China, the northwest desert region, the north Loess Plateau, and the Sichuan Basin regions, but had negative values over the lower reaches of the Yangtze River and the alluvial regions of the lower reaches of the Yellow River. This study provides good references for further studies of soil climate formation. |
| Keywords: | China soil heat flux spatial and temporal distribution characteristics |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《气候与环境研究》浏览原始摘要信息 | |
| 点击此处可从《气候与环境研究》下载免费的PDF全文 | |