| 高寒草甸土壤水分的影响因子及其空间变异研究 |
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| 引用本文： | 王军德,王根绪,陈玲. 高寒草甸土壤水分的影响因子及其空间变异研究[J]. 冰川冻土, 2006, 28(3): 428-433. DOI: 10.7522/j.issn.1000-0240.2006.0063 |
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| 作者姓名： | 王军德 王根绪 陈玲 |
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| 作者单位： | 1. 兰州大学, 教育部西部环境重点实验室, 甘肃, 兰州, 730000;2. 中国科学院, 寒区旱区环境与工程研究所, 甘肃, 兰州, 730000 |
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| 基金项目： | 国家自然科学基金项目(30270255)，中国科学院知识创新工程重大项目(KZCX1-SW-04)资助 |
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| 摘 要： | 以黄河源区典型高寒草甸草地类型为对象,运用旋转主成分分析法对影响高寒草甸土壤水分的植被盖度、群落高度、土层根系深度、草地类型等9个环境因子进行了分析,将这些环境因子分为4个主成分因子依次为:立地与草地类型因子、植被因子、坡向风速因子和地形因子.同时,采用统计方法对于不同深度土壤水分进行了统计分析,揭示了土壤水分在整个土壤剖面上的空间变异可划分为:速变层(0~30 cm)、活跃层(40 cm)、次活跃层(50 cm)和相对稳定层(60 cm).
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| 关 键 词： | 高寒草甸 土壤水分 影响因子 空间变异 |
| 文章编号： | 1000-0240(2006)03-0428-06 |
| 收稿时间： | 2005-10-20 |
| 修稿时间： | 2005-12-08 |
Impact Factors to Soil Moisture of Alpine Meadow and Their Spatial Heterogeneity |
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| WANG Jun-de,WANG Gen-xu,CHEN Ling. Impact Factors to Soil Moisture of Alpine Meadow and Their Spatial Heterogeneity[J]. Journal of Glaciology and Geocryology, 2006, 28(3): 428-433. DOI: 10.7522/j.issn.1000-0240.2006.0063 |
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| Authors: | WANG Jun-de WANG Gen-xu CHEN Ling |
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| Affiliation: | 1. National Laboratory of Western China’s Environmental Systems, Lanzhou University, Lanzhou Gansu 730000, China;2. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou Gansu 730000, China |
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| Abstract: | Nine environmental factors which influence the soil moisture of alpine meadow are analyzed through rotated principal component analysis,such as community's height,depth of root system of soil layer,land use pattern,etc.The analyses show that these environmental factors can be divided into four principal compositions successively: factors of plant,vegetation,slope,elevation,wind speed and topography.At the same time,using the software of counting,statistics of soil moistures for different depths are made and then the spatial heterogeneity of soil moistures is revealed.An overall soil section can be divided into speedy changing layer,changeful layer,second-changeful layer and relative stable layer from the top to the bottom. |
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| Keywords: | alpine meadow soil moisture influencing factors spatial heterogeneity |
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