陕南碑坝常绿阔叶林生态优势度研究  

A Preliminary Study of the Ecological Dominance of the Evergreen Broad-|eaf Forest of Beiba in Shaanxi

作　　者：方正 刘静艳 马鹏 

机构地区：[1]陕西师大地理系

出　　处：《陕西师大学报（自然科学版）》1990年第3期70-73,共4页Journal of Shaanxi Normal University(Natural Science Edition)

摘　　要：应用Simpson优势度指标,测定了陕南碑坝常绿阔叶林生态优势度,结果表明,该区常绿阔叶林生态优势种群单一,群落组成简单,且生态优势度指标具有明确的群落生态学意义。The ecological dominance of 16 forest communities in Beiba area(32°30′ -32°55′N, 107°05′-127°20′E) are measured. The results are as follows: ecological dominance index has clear and definite meaning of synecology, it can be taken as the add index of classification by measuring the different community types. Escapically, it shows the difference of structure formation feature of communities dominated by the same ecological dominant species. The ecological dominant species of evergreen broad-leaf forest in Beiba area are characterized mainly by singleness and the floristic composition is relative simple.

关 键 词：常绿阔叶林 生态学 生态优势度 

分 类 号：S792.02[农业科学—林木遗传育种]