| 岷江上游干旱河谷区阳坡土壤性质空间分异特征 |
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| 引用本文： | 唐家良,周麟,罗贵生,王士革,王道杰.岷江上游干旱河谷区阳坡土壤性质空间分异特征[J].山地学报,2009,27(5). |
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| 作者姓名： | 唐家良 周麟 罗贵生 王士革 王道杰 |
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| 作者单位： | 中国科学院水利部成都山地灾害与环境研究所,四川,成都,610041 |
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| 基金项目： | 中国科学院西部行动计划项目，中国科学院成都山地灾害与环境研究所青年种子基金 |
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| 摘 要： | 通过现场调查取样和室内理化试验,定量分析了岷江上游干旱河谷区阳坡土壤性质的空间变异特征,结合已有植被格局进行了区域土壤植被系统综合分析.研究结果表明:岷江上游干旱河谷区阳坡表层土壤粘粒含量极低,>0.25 mm颗粒占45.2%;土壤微团聚体中表层<0.002 mm的部分存在向下淀积或流失现象;pH值偏高,土壤N、P养分处于缺乏状态,且有效养分含量极低,土壤肥力水平低;土壤性质水平分异图显示:坡上部的疏林地土壤肥力高于其他土地利用地块,相对新植林地而言,靠近阴坡的疏林地植被恢复潜力更大.
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| 关 键 词： | 岷江上游干旱河谷 土壤退化 空间分异 土壤肥力 植被恢复 |
Spatial Characteristics of Degraded Soil on Southfacing Hillslope in the Dry Valley of Minjiang River |
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| TANG Jialiang,ZHOU Lin,LUO Guisheng,WANG Shige,WANG Daojie.Spatial Characteristics of Degraded Soil on Southfacing Hillslope in the Dry Valley of Minjiang River[J].Journal of Mountain Research,2009,27(5). |
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| Authors: | TANG Jialiang ZHOU Lin LUO Guisheng WANG Shige WANG Daojie |
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| Institution: | Institute of Mountain Hazards and Environment;Chinese Academy of Sciences;Chengdu 610041;China |
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| Abstract: | The field investigation and analysis of physical and chemical properties of soil samples were conducted to elucidate the spatial characteristics of degraded soils on southfacing hillslope in the dry valley of Minjiang River,the mechanism of soil degradation was also discussed.The results showed that the clay contents of soils were low while coarser composition(>0.25 mm)accounted for 45.2% of total.The physical structure was unfriendly for vegetations.The micro-aggregates(<0.002 mm)in surface soil were illuv... |
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| Keywords: | dry valley of Minjiang River soil degradation spatial distribution soil fertility vegetation restoration |
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