不同择伐强度对马尾松林下植物群落多样性的影响  

Effects of Selective Cutting Intensity on Plant Community Diversity in Pine Forest

作　　者：朱国富 

机构地区：[1]福建省东山县森林病虫害防治检疫站,福建东山363400

出　　处：《青海农林科技》2016年第2期23-26,共4页Science and Technology of Qinghai Agriculture and Forestry

摘　　要：在福建省东山县马尾松林地不同采伐区选择典型样地,采用Patrick丰富度指数、Simpson多样性指数、Shannon-Wiener多样性指数及Pielou均匀度指数,研究了不同择伐强度对马尾松林林下物种多样性的影响。结果表明:松材线虫病中度危害后,采取适度的择伐干扰有利于提高林分生物多样性。结果表明随着择伐强度的加大,林下植物物种丰富度、多样性和均匀度先增加而后下降的趋势。择伐受松材线虫病中度危害(30%-40%)林分,即每公顷林分中保留950株马尾松植株,有利于提高林下植物群落的多样性,保持群落结构和功能的稳定,增加松林系统的抵抗力。In different harvesting areas of Dongshang County of Pinus massoniana forest land, the typical sample had been selected, and the species diversity index, such as Patrick richness index, Simpson diversity index, Shannon Wiener diversity index and Pielou uniformity index were investigated under pine forest damaged by pine wood nematode disease. The results showed that the moderate hazard, take moderate selective cutting disturbance is beneficial to the increase of biodiversity, with increase of the harm degree increase and harvesting intensity and frequency, biological diversity will gradually decline. Selective cutting of moderate hazard （30% -40% ） stand by pine wood nematode damage, namely 950 plants were kept per hm2 in stand, it is advantageous to improve the diversity of plant community, maintain the stability of community structure and function, and increase the resistance of pine forest system.

关 键 词：松材线虫病 马尾松林 物种多样性 择伐强度 

分 类 号：S753.7[农业科学—森林经理学]