|
|||||
|
|
| 蒙古高原中部草地土壤冻融过程及土壤含水量分布 | |
| 引用本文： | 刘帅,于贵瑞,浅沼顺,杉田伦明,张雷明,赵风华,胡中民,李胜功.蒙古高原中部草地土壤冻融过程及土壤含水量分布[J].土壤学报,2009,46(1):46-51. |
| 作者姓名： | 刘帅 于贵瑞 浅沼顺 杉田伦明 张雷明 赵风华 胡中民 李胜功 |
| 作者单位： | 1. 中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室,CERN综合研究中心,北京,100101;中国科学院研究生院,北京,100039 2. 中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室,CERN综合研究中心,北京,100101 3. 日本筑波大学生命与环境科学大学院,筑波,305-8572 |
| 基金项目： | 中国科学院"百人计划"项目，国家自然科学基金重大项目，日本科学技术振兴机构资助项目 |
| 摘 要： | 利用土壤剖面的温度、湿度观测数据,结合气象资料初步分析了蒙古高原中部典型针茅草原在季节转变过程中(2003～2004年)的土壤冻融过程和土壤含水量分布动态。研究表明,0～150cm深度范围的土壤完全冻结天数为154～160d。冻融日循环主要发生在表层0～5cm。0～30cm土层的土壤含水量变化剧烈,与地温有较好的一致性。0～10cm深度土壤含水量高于其他土层。随着深度的增加,土壤含水量季节波动性变小。冻结过程有利于保持土壤水分,有利于春季草地植被返青。 |
| 关 键 词： | 冻融过程 土壤含水量 蒙古高原 针茅草地 |
The thawing-freezing processes and soil moisture distribution of the steppe in central Mongolian Plateau |
|
| Liu Shuai,Yu Guirui,Jun Asanuma,Michiaki Sugita,Zhang Leiming,Zhao Fenghua,Hu Zhongmin,Li Shenggong.The thawing-freezing processes and soil moisture distribution of the steppe in central Mongolian Plateau[J].Acta Pedologica Sinica,2009,46(1):46-51. | |
| Authors: | Liu Shuai Yu Guirui Jun Asanuma Michiaki Sugita Zhang Leiming Zhao Fenghua Hu Zhongmin Li Shenggong |
| Affiliation: | Synthesis Research Center of Chinese Ecosystem Research Network, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences; Graduate University of Chinese Aca;Synthesis Research Center of Chinese Ecosystem Research Network, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences;Graduate School of Life and Environmental Sciences, University of Tsukuba;Graduate School of Life and Environmental Sciences, University of Tsukuba;Synthesis Research Center of Chinese Ecosystem Research Network, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences;Synthesis Research Center of Chinese Ecosystem Research Network, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences; Graduate University of Chinese Aca;Synthesis Research Center of Chinese Ecosystem Research Network, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences; Graduate University of Chinese Aca;Synthesis Research Center of Chinese Ecosystem Research Network, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences |
| Abstract: | The dynamics of soil moisture distribution and thawing freezing process of stipa steppe in central Mongolia during the seasonal transition period (2003~2004) were analyzed with the measurement of temperature and moisture in the soil profile combined with the meteorological data. The results show that there is a completely frozen period about 154~ 160 d in the soil profile of 0~150 cm. The diurnal freeze/thaw cycle mainly takes place at the ground surface of 0~ 5 cm. The soil moisture in 0~30 cm layer changes intensively in the thawing freezing processes, as well as the soil temperature. In general, the soil water content at 10 cm depth is always higher than those of other depths. The seasonal variation of soil moisture weakened gradually with the increasing soil depth. The frozen soil is favor of keep water, which benefits the regreening of grass in spring. |
| Keywords: | Thawing-freezing processes Soil moisture Mongolian Plateau Stipa steppe |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《土壤学报》浏览原始摘要信息 | |
| 点击此处可从《土壤学报》下载全文 | |
