干旱区生态环境知识资源中心(Arid): 金沙江干热河谷侵蚀陡坡植被恢复对土壤质量的影响

Arid

	金沙江干热河谷侵蚀陡坡植被恢复对土壤质量的影响
其他题名	Effects of vegetation restoration on soil quality of eroded hillslopes in dry-hot valley of Jinsha River
	聂小军; 张建辉; 刘刚才; 南岭; 苏正安
ISSN	1672-2175
出版年	2008
卷号	17 期号:4 页码:1636-1640
中文摘要	植被恢复关系到金沙江干热河谷陡坡冲沟侵蚀的发育，土壤质量的演化。文章以元谋干热河谷侵蚀陡坡为例，通过测定植被恢复地与侵蚀裸地的土壤质量，探讨了植被恢复对侵蚀陡坡土壤质量的影响。结果表明：侵蚀陡坡植被恢复有效地防止了土壤侵蚀的发生。与侵蚀裸地相比，植被恢复地土壤剖面层次保持完整，母质层以上有明显的A、B层，土壤厚度变异小且厚度大，物理性粘粒含量高，基本保持着母质为粘土层的变性燥红土质地粘重特征。植被恢复在3年多时间内对土壤紧实度尚没有起到明显改善作用，土壤容重依然偏大。植被恢复对雨季陡坡土壤水分的改善效果好，而在旱季改善效果不好。雨季，植被恢复地水分含量高，不同坡位土壤水分差异不明显。旱季，植被恢复地与侵蚀裸地土壤水分状况相似。两种类型的坡地土壤水分含量都很低，不同坡位土壤水分差异明显，而且土壤水分含量沿向下坡方向降低。植被恢复减弱了陡坡土壤侵蚀带来的有机质流失，促进了有机质的积累。因此，针对目前植被恢复的不足，采取有效的土壤改良措施，保土保水，提高土壤水分储量，减小土壤水分的时空差异。同时降低土壤紧实度，是今后侵蚀陡坡植被恢复值得考虑的一项工作。
英文摘要	Vegetation restoration is related to the development of gully erosion and soil succession of the eroded hillslopes in dry-hot valley of Jinsha River. Taking Yuanmou dry-hot valley as a study area, this paper discussed effects of vegetation restoration on soil quality of the eroded hillslopes by measuring soil quality indicators across a vegetation restoration slopeland and an eroded bare land. The results showed that （1） vegetation restoration could effectively prevent soil erosion from destroying soil profile. More complete soil A and B layer, thicker soil depth with smaller variations among different slope positions, higher physical clay content and heavy soil texture were found in the slopeland for vegetation restoration compared to that on the erode bare land. However, soil packing degree was insignificantly improved and thus soil bulk density was still high after short-term vegetation restoration; （2） effects of vegetation restoration were different in soil water from different seasons and slope positions. During rainy season, vegetation restoration significantly improved the spatial distribution of soil water. Soil water content in the slopeland for vegetation restoration was higher than that in the eroded bare land and its spatial distribution was even with insignificant difference among different slope positions. However, within arid season, there is no significant improvement of vegetation restoration on the spatial distribution of soil water, with low soil moisture content in the slopeland for vegetation restoration and the eroded bare land, Meanwhile, soil moisture content declined along the downslope transaction; （3） vegetation restoration decreased the loss of soil organic matter, resulting in the accumulation of organic matter. Therefore, reasonable measures on soil and water conservation should be taken to reduce soil packing degree, increase soil water storage and decline the variation in soil water on the eroded hillslopes in future.
中文关键词	元谋干热河谷 ; 土壤侵蚀 ; 植被恢复 ; 土壤质量
英文关键词	Yuanmou dry-hot valley soil erosion vegetation restoration soil quality
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:3405441
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/222654
作者单位	中国科学院、水利部成都山地灾害与环境研究所, 成都, 四川 610041, 中国
推荐引用方式 GB/T 7714	聂小军,张建辉,刘刚才,等. 金沙江干热河谷侵蚀陡坡植被恢复对土壤质量的影响[J],2008,17(4):1636-1640.
APA	聂小军,张建辉,刘刚才,南岭,&苏正安.(2008).金沙江干热河谷侵蚀陡坡植被恢复对土壤质量的影响.,17(4),1636-1640.
MLA	聂小军,et al."金沙江干热河谷侵蚀陡坡植被恢复对土壤质量的影响".17.4(2008):1636-1640.