间伐强度对不同林分类型下层物种多样性的短期影响  

Short-term Effects of Thinning Intensity on Species Diversity of Undergrowth Layer in Different Stands

作　　者：邓送求[1] 闫家锋[1] 王宇[2] 关庆伟[1] 郭雪艳[1] 

机构地区：[1]南京林业大学,南京210037 [2]沈阳市林业局退耕还林办公室

出　　处：《东北林业大学学报》2010年第3期31-33,46,共4页Journal of Northeast Forestry University

基　　金：国家“十一五”科技支撑计划项目(2006BAD03A0602);国家林业局“948”项目(2006-4-27)资助

摘　　要：以南京无想寺国家森林公园为对象,调查了该公园内4种不同间伐强度下5个典型林分类型固定试验地间伐1a后的物种多样性,并应用方差分析法分析了不同林分类型之间与不同间伐强度之间下层物种多样性的差异。结果表明:间伐后的不同林分类型下层物种多样性具有较高的一致性;从短期效果看,间伐能显著提高林分的物种多样性;间伐地下层平均高和Pielou均匀度指数与对照地差异极不显著;对此试验地,Margalef指数反映物种多样性变化最为灵敏,Shannon-Wiener指数次之,Simpson指数较不灵敏。Species diversities of five typical stands in Wuxiangsi National Forest Park of Nanjing City under four different thinning intensities were studied during the first year after thinning. The analysis of variance was applied to analyze the change in species diversities between different stand types and between different thinning intensities. Results indicate that there is not difference in species diversity between different stand types. Judged from the short-term effects,the species diversity of the stands could be improved significantly by thinning. The average height and Pielou index of undergrowth layer did not exhibit significant differences between different thinning intensities. Margalef index is most sensitive to the change in species diversity of the experimental plots,and then followed by Shannon-Wiener index and Simpson index in order.

关 键 词：间伐强度 林分类型 物种多样性 方差分析 

分 类 号：S753.5[农业科学—森林经理学] S791.38[农业科学—林学]