陕西府谷杜松自然保护区杜松群落特征研究  

Study on the feature of Juniperus rigida community in Fugu Nature Reserve in Shaanxi Province

作　　者：褚胜利[1] 李登武[2] 李景侠[2] 

机构地区：[1]西北农林科技大学生命科学学院,陕西杨凌712100 [2]西北农林科技大学林学院,陕西杨凌712100

出　　处：《干旱地区农业研究》2008年第2期165-170,共6页Agricultural Research in the Arid Areas

基　　金：国家自然科学基金项目(30671672);中国科学院知识创新项目(KZCX1-06)

摘　　要：在陕西府谷地区通过样方法对杜松群落特征进行了研究,结果表明:杜松群落植物种类丰富,科属组成简单,区系成分较复杂。从属的地理成分来看,温带分布的属明显多于热带分布的属。群落的生活型以地面芽植物为主,矮高位芽植物次之;该群落叶的性质以小型叶、单叶、草质和非全缘为主,群落结构较简单,地上成层现象明显,可分乔木层、灌木层和草本层,并有少量的层间植物。乔木层、灌木层和草本层的物种多样性大小依次为草本层>灌木层>乔木层。杜松种群的年龄结构属衰退型。With quadrat sampling method, the results study on the feature of Juniperus rigida community in Fugu Nature Reserve showed that ： There are diversified plants in the community of Juniperus rigida, and its family and genus are of simple compositions. Their floral composition is quite complicated. In terms of genus geographical elements, many of them are distributed in temperate zones. According to Raunkiaer＇ s statistics of life-form, the life-form hemicryptophyte of this community numbers first, and the nanophanerophyte second. The features of the community leaf is mainly microphyll, simple, herbaceous and unentire. The vertical structure of community is relatively simple which can be divided into tree layer, shrub layer and herb layer as well as few number of interstratum plants. The species diversity index of different layers shows： herb layer〉shrub layer〉tree layer. The population of Juniperus rigida is declining.

关 键 词：杜松自然保护区 杜松群落 群落特征 区系成分 府谷县 

分 类 号：S727.2[农业科学—林木遗传育种]