Effects of Artificial Vegetation Restoration on Soil Physicochemical Properties in Southern Edge of Mu Us Sandy Land  

毛乌素沙地南缘人工恢复植被对沙地土壤理化性质的影响（英文）

作　　者：杨越[1,2] 孙宏[1] 韩永娇[1] 武智勇[1] 宋双双[3] 赵瑞[3] 

机构地区：[1]河北民族师范学院,河北承德067000 [2]北京师范大学资源学院,北京100875 [3]北京林业大学水土保持学院,北京100083

出　　处：《Agricultural Science & Technology》2014年第4期648-652,691,共6页农业科学与技术（英文版）

基　　金：Supported by National Key Technology Research and Development Program during the 12th Five-year Plan Period(2012BAD16B0202);Special Fund for Forest Scientific Research in the Public Interest(201004018)~~

摘　　要：[Objective] This study aimed to investigate the artificial vegetations on soil physicochemical properties of sandy land. [Method] The soil physicochemical proper- ties in five representative lands respectively covered by Artemisia ordosica, Salix cheilophila, Hedysarum scoparium, Populus simonii and Amorpha fruticosa, all of which were planted artificially at the same year were measured in the present study, using a bare soil as the control. [Result] Artificial vegetation improved the soil physicochemical properties by different extents in the lands covered by different plants. The soil physicochemical properties such as bulk density under A. Fruticosa and H. Scoparium were improved greatly. The frequency distribution of soil particle size under artificial vegetations exhibited a bimodal curve. The average soil particle size under A. fruticosa was the smallest, and the soil was very poorly sorted. The soil nutrients in the sandy land were not significantly improved by artificial vegeta- tion. [Conclusion] Artificial vegetation has a certain impact on soil properties in sandy land, as it greatly improves the soil physical properties but not the chemical properties.[目的]探讨人工恢复植被对沙地土壤特性的影响。[方法]选取毛乌素沙地南缘生长年限相同的5种代表性人工恢复植被(油蒿、沙柳、花棒、小叶杨和紫穗槐)样地为研究对象,以裸露沙地为对照,研究不同人工恢复植被样地的土壤理化性质。[结果]人工恢复植被能够改善沙地土壤理化特性,不同植被对土壤的作用强度不同;紫穗槐和花棒样地的土壤容重等物理性质改善明显;人工恢复植被样地的土壤粒度频率分布均呈现双峰,紫穗槐样地土壤平均粒径最小,分选性最差;人工恢复植被对沙地土壤养分改良效果不明显。[结论]人工恢复植被对沙地土壤特性具有一定程度的影响,沙地土壤物理性质改良效果显著,而沙地土壤化学性质改良效果不显著。

关 键 词：Artificial vegetation restoration Soil physicochemical properties Mu Us sandy land 

分 类 号：S153[农业科学—土壤学]