潮滦河小流域鱼鳞坑内外植被群落特征与环境关系.pdfVIP

第27卷第6期 水土保持通报 Vo1．27，No．6 2007年 12月 Bulletin of Soil and Water Conservation Dec．，2007 潮滦河小流域鱼鳞坑内外植被群落特征与环境关系 王明明 。，谢永生 ，王恒俊 (1．中国科学院 水利部 水土保持研究所，陕西 杨凌 712100； 2．西安理工大学，陕西西安710048；3．中国科学院研究生院，北京100049) 摘 要：通过对小流域不同坡面上鱼鳞坑的内外群落植被调查，研究了该地区鱼鳞坑内外植被群落特征与 海拔及坡向的关系。(1)阴坡鱼鳞坑内的盖度大于阳坡鱼鳞坑内的盖度，并且达到极显著水平。(2)坡向 不是控制该区域植被群落多样性的主导因子。(3)不同土地类型鱼鳞坑外的群落丰富度指数，Shannon-- Wiener指数及同一土地类型的鱼鳞坑内外群落的指数均与海拔高度成极显著的抛物线函数关系，但是与 鱼鳞坑内群落的多样性指数不成显著相关关系。结果显示，可以通过像鱼鳞坑这样的整地方式来改变小 生境以促进群落植被的物种多样性。 关键词：土石山区；鱼鳞坑；物种多样性；海拔；坡向 文献标识码：A 文章编号：1000--288X(2007)06一O080—05 中图分类号：S157．39 Characteristics of Vegetation Communities Inside and outside Fish-scale Pits in Small Watersheds of Chao and Lnan River and Its Relationshipswith Environmental Factors WANG Ming—ming ，XIE Yong—sheng ，WANG Heng—j un ’ (1．Institute of Soil and Water Conservation，Chinese Academy of Sciences and Ministry of WaterResources，Yangling，Shaanxi 712100，China；2．Xi’an University of Technology，Xi’an， Shaanxi 710048，China；3．Graduate School of the Chinese Academy of Sciences，Beijing 100049，China) Abstract：Based on vegetation eommunities inside and outside fish-scale pits on the different slopes of small watershed，the relationships between vegetation communities inside and outside fish—scale pits and latitude as well as slope aspect are discussed．The results drawn from this case study are as follows：(1)The coverage of the vegetation community inside fish—scale pits on northern slope is higher than that on southern slope， reaching a very significant leve1．(2)Slope aspect is not the dominant factor in determining the diversity of the vegetation communities．(3)The re