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当前位置: 首页 > 文章 > 滇西北亚高山不同退化群落植物生活型的特征研究 西部林业科学 2013,42 (2) 37-42
Position: Home > Articles > Characteristics of Plant Life-form of Degraded Vegetations in Sub-alpine of Northwest Yunnan Journal of West China Forestry Science 2013,42 (2) 37-42

滇西北亚高山不同退化群落植物生活型的特征研究

作  者：
郭华;耿云芬;张劲峰
单  位：
迪庆州林业科学研究所;云南省林业科学院
关键词：
滇西北;亚高山;退化群落;植物生活型;特征
摘  要：
以滇西北香格里拉亚高山的极度退化、重度退化、中度退化、轻度退化和未退化的5类森林群落为研究对象,采用典型样地法设置样地,测定其群落内植物的生活型特征。研究结果表明,滇西北亚高山不同程度退化林地中植物生活型由中高位芽、小高位芽、矮高位芽、地上芽、地面芽、地下芽、1年生植物共7大类组成。其中以地面芽植物占绝对优势;1年生植物、中高位芽植物和地下芽植物所占比例最小,未发现达到30 m的大高位芽植物。随着群落退化程度的减低,物种丰富度呈现先增加后下降的趋势;中高位芽和小高位芽植物显著增加。随着林地退化程度的加剧,地面芽植物的比例大幅度上升,并成为植物生活型组成的绝对优势成分。
译  名：
Characteristics of Plant Life-form of Degraded Vegetations in Sub-alpine of Northwest Yunnan
作  者：
GUO Hua1,GENG Yun-fen2,ZHANG Jin-feng2 (1.Diqing Forestry Research Institute,Shangri-la Yunnan 674400,P.R.China; 2.Yunnan Academy of Forestry,Kunming Yunnan 650201,P.R.China)
关键词：
Northwest Yunnan;subalpine;degradation;community;plant life-form;characteristic
摘  要：
Five forest communities of extreme degraded forest,heavy degraded forest,medium degraded forest,light degraded forest and none degradation in sub-alpine of Northwest Yunnan were selected to set up study plots.Sample method was adopted to carry out comparative study on characteristics of plant life-form in the five degraded forests communities.The results showed that there were 7 life-forms in degraded forests,including meso-phanerophytes,micro-phanerophytes,nanophanerophytes,chamaephytes,hemicryptophytes,geophytes and annuals,and hemicryptophytes were the dominate,the proportions of annuals,meso-phanerophytes and geophytes were the lowest,megaphanerophyte over 30 m was not found.With the reduction of degradation gradient in five sample forest communities,the species richness showed the tendency of first increase and then decrease in none degradation,the percentage of meso-phanerophytes and micro-phanerophytes significantly increased.With the aggravation of degradation,the proportion of hemicryptophyte obviously increased and became the dominant species of plant life-form composition.

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