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作 者:陈平[1] 万福绪[1] 顾汤华[1] 李盟[1] 秦飞 关庆伟[1]
机构地区:[1]南京林业大学森林资源与环境学院,江苏南京210037 [2]江苏省徐州市林业技术指导站.江苏徐州221009
出 处:《浙江林学院学报》2010年第5期691-698,共8页Journal of Zhejiang Forestry College
基 金:“十一五”国家科技支撑计划项目(2006BAD03A0602);江苏省科技计划项目(013010061)
摘 要:在对不同林分类型样地调查的基础上,采用物种丰富度指数Patrick指数(dP),Menhinick指数(dMe),Simpson指数(SSP),Shannon-Wiener指数(SSW)和Pielou均匀度指数(JSW,JSP)进行物种多样性测度分析,探讨人为干扰对林下植物多样性的影响。结果表明:①同一林分各层物种多样性指数顺序是草本层>灌木层,但在侧柏Platycladus orientalis纯林(对照地)中由于特殊生境影响表现为灌木层>草本层;②不同林分灌木层植物多样性顺序是侧柏(对照地)>栾树Koelreuteria paniculata+侧柏(下坡)>侧柏(2a)>侧柏+黄连木Pistacia chinensis>侧柏+朴树Celtis sihensis+青桐Firmiana simplex+刺槐Robinia pseudoacacia>女贞Ligustrum lucidum+雪松Cedrus deodara(2a)>侧柏+栾树(上坡)>女贞(2a),草本层植物多样性顺序是侧柏+朴树+青桐+刺槐>女贞(2a)>女贞+雪松(2a)>栾树+侧柏(下坡)>侧柏+黄连木>侧柏+栾树(上坡)>侧柏(2a)>侧柏(对照地);③不同人为干扰对人工林下植物组成影响不同,结果显示不同林分间相似性指数变化范围为0.0560~0.5854,林分间共有种较少,差异大,多样性高。The objective is to find the effect of anthropogenic disturbances including cultivation and intermediate cutting on forest plantation.Based on data collected from eight plantation plots(eight plant communities) in Xuzhou City,the Patrick(dP),Menhinick(dMe),Simpson(SSP),Shannon-Wiener(SSW),and Pielou(JSW) indices were employed to determine species richness,evenness,and species diversity of eight plant communities.Sorenson indices were also used for coefficiency between two communities.Results showed that:(1) species diversity in shrub and herb layers for the same plantation,except for the Platycladus orientalis community,were:shrub herb.(2) Species diversity for shrub layers of the eight plantations was:Platycladus orientalis(control-ck) Koelreuteria paniculata + Platycladus orientalis(downslope) Platycladus orientalis(2-year-old,2 a) Platycladus orientalis + Pistacia chinensis Platycladus orientalis + Celtis sinensis + Firmiana simplex + Robinia pseudoacacia Ligustrum lucidum + Cedrus deodara(2 a) Platycladus orientalis + K.paniculata(upslope) L.lucidum(2 a);for the herb layer diversity was:Platycladus orientalis + Celtis sinensis + F.simplex + R.pseudoacacia L.lucidum(2 a) L.lucidum + Cedrus deodara(2 a) K.paniculata + Platycladus orientalis(downslope) Platycladus orientalis + Pistacia chinensis Platycladus orientalis + K.paniculata(upslope) Platycladus orientalis(2 a) Platycladus orientalis(ck).Also,(3) Sorenson Indices in plantations were 0.056 0-0.585 4 showing fewer common species and greater biodiversity between communities.
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