| 祁连山2种植被下冻土的季节变化及数值模拟 |
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| 引用本文： | 任璐,王顺利,于澎涛,王彦辉,张学陪,王彬,刘贤德,金铭.祁连山2种植被下冻土的季节变化及数值模拟[J].林业科学研究,2016,29(4):596-602. |
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| 作者姓名： | 任璐 王顺利 于澎涛 王彦辉 张学陪 王彬 刘贤德 金铭 |
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| 作者单位： | 北京林业大学水土保持及荒漠化防治学院, 北京 100083;中国林业科学研究院森林生态环境与保护研究所, 国家林业局 生态环境与保护重点实验室, 北京 100091;甘肃省祁连山水源涵养林研究院, 甘肃 张掖 734000;中国林业科学研究院森林生态环境与保护研究所, 国家林业局 生态环境与保护重点实验室, 北京 100091;中国林业科学研究院森林生态环境与保护研究所, 国家林业局 生态环境与保护重点实验室, 北京 100091;北京林业大学水土保持及荒漠化防治学院, 北京 100083;中国林业科学研究院森林生态环境与保护研究所, 国家林业局 生态环境与保护重点实验室, 北京 100091;甘肃省祁连山水源涵养林研究院, 甘肃 张掖 734000;甘肃省祁连山水源涵养林研究院, 甘肃 张掖 734000 |
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| 基金项目： | 国家自然科学基金项目（91225302，91425301，31360201） |
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| 摘 要： | 目的]探究祁连山地区冻土的季节性变化以及植被对祁连山季节冻土的影响,建立冻土深度与温度的关系。方法]对比观测了祁连山排露沟小流域的阴坡青海云杉林下土壤和阳坡草地土壤冻结融化过程,定量分析土壤冻结层随季节的变化。结果](1)祁连山区季节性冻土每年10月中下旬开始冻结,4月冻土层上界面开始融化,8月消融完毕。该冻结融化过程可划分为单向冻结、单向融化和双向融化3个阶段段。(2)青海云杉林内土壤的冻结起始时间与草地土壤基本相同,但冻结速率比草地快,最大冻结深度比草地大;青海云杉林土壤冻结层融化阶段的起始时间亦与草地基本相同,融化速率相近,但青海云杉林下冻土融化持续的时间更长。(3)积温决定土壤冻结融化进程,当冻结小时积温达到约-460℃·h,土壤开始冻结;当小时积温达到约62℃·h,土壤冻结层的上界面开始融化。结论]土壤冻结层深度与小时积温的相关系数达到0.9以上,可用于预测预报冻土的冻结状态。
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| 关 键 词： | 祁连山 生态水文 冻土 冻结深度 植被 |
| 收稿时间： | 3/1/2016 12:00:00 AM |
Seasonal Change and Numerical Simulation of the Frozen Soil under Two Types of Vegetation in Qilian Mountains |
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| REN Lu,WANG Shun-li,YU Peng-tao,WANG Yan-hui,ZHANG Xue-pei,WANG Bin,LIU Xian-de and JIN Ming.Seasonal Change and Numerical Simulation of the Frozen Soil under Two Types of Vegetation in Qilian Mountains[J].Forest Research,2016,29(4):596-602. |
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| Authors: | REN Lu WANG Shun-li YU Peng-tao WANG Yan-hui ZHANG Xue-pei WANG Bin LIU Xian-de and JIN Ming |
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| Institution: | School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China;Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Key Laboratory of Forestry Ecology and Environment of State Forestry Administration, Beijing 100091, China;Gansu Province Qilian Water Resource Conservation Forest Research Institute, Zhangye 734000, Gansu, China;Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Key Laboratory of Forestry Ecology and Environment of State Forestry Administration, Beijing 100091, China;Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Key Laboratory of Forestry Ecology and Environment of State Forestry Administration, Beijing 100091, China;School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China;Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Key Laboratory of Forestry Ecology and Environment of State Forestry Administration, Beijing 100091, China;Gansu Province Qilian Water Resource Conservation Forest Research Institute, Zhangye 734000, Gansu, China;Gansu Province Qilian Water Resource Conservation Forest Research Institute, Zhangye 734000, Gansu, China |
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| Abstract: | |
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| Keywords: | Qilian Mountains ecological hydrology frozen soil frozen depth vegetation |
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