森林抚育对南京南郊杉木马尾松群落乔木层的影响  

Effects of tending on tree layer of Cunninghamia lanceolata and Pinus massoniana community in southern suburb of Nanjing

作　　者：蒋春[1] 黄利斌[1] 严俊 孙戴妍 Jiang Chun;Huang Libin;Yan Jun;Sun Daiyan(Jiangsu Academy of Forestry, Nanjing 211153,China;Nanjing Forestry Station, Nanjing 210017, China)

机构地区：[1]江苏省林业科学研究院,江苏南京211153 [2]南京市林业站,江苏南京210017

出　　处：《江苏林业科技》2021年第4期49-53,共5页Journal of Jiangsu Forestry Science & Technology

基　　金：国家科技支撑计划林业生态科技工程项目“浙江及江苏区域城镇景观林综合保健功能评价利用技术研究与示范”(2015BAD07B06-7);江苏省林业科技创新与推广项目“南京丘陵山区退化杉木林修复技术示范”(LYKJ-南京[2021]04)。

摘　　要：为了探索抚育经营对森林群落多样性指数及蓄积量的影响,采用典型样地取样法,把位于同一地点的杉木马尾松群落分成2部分,一部分进行中度抚育,另一部分不抚育,10 a后对2部分乔木树种的多样性指数及蓄积量进行研究。结果显示,未进行抚育的群落内乔木层物种多样性Shannon-Wiener指数(H′)为2.0290,Simpson指数(D)为0.8537,Pielou均匀度指数(J)为0.8812,总蓄积量为30.6274 m^(3);抚育后的群落内乔木层物种多样性H′为2.1900,D为0.8518,J为0.7900,总蓄积量为54.2131 m^(3)。抚育后群落的多样性指数H′明显提高,Simpson指数D大致相等,Pielou均匀度指数(J)有所下降,森林总蓄积量显著提高。说明适当的森林抚育措施可以提高群落的生物多样性和蓄积量。This article dealt with the effects of tending management on forest community diversity index and volume.The community composed of Cunninghamia lanceolata and Pinus massoniana(Lamb).in the studied area was divided into two parts by typical plot sampling.One part was moderately tending,the other remained unchanged.After 10 years,the diversity index and volume of tree species in the two parts were analyzed.The species diversity indexes of tree layer in the community without tending were shown as followed,Shannon Wiener index(H′)was 2.0290,Simpson index(D)was 0.8537,Pielou evenness index(J)was 0.8812,and the total volume was 30.6274 m^(3).The species diversity indexes of tree layer in the community after tending,shown as H′was 2.1900,D was 0.8518,J was 0.7900,and the total volume was 54.2131 m^(3).After tending management,H′of the community increased,D was approximately equal,J decreased,and the total forest volume increased significantly.It was concluded that appropriate forest tending measures could improve the biodiversity and volume of the community.

关 键 词：森林抚育 乔木层 多样性指数 蓄积量 南京 

分 类 号：S718[农业科学—林学] S753.525