Short-term effects of anthropogenic disturbances on plant species diversity in undergrowth vegetation for limestone soils of Xuzhou City,Jiangsu Province
-
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(2 a)>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(2 a)>侧柏 + 栾树(上坡)>女贞(2 a),草本层植物多样性顺序是侧柏 + 朴树 + 青桐 + 刺槐>女贞(2 a)>女贞 + 雪松(2 a)>栾树 + 侧柏(下坡)> 侧柏 + 黄连木>侧柏 + 栾树(上坡)>侧柏(2 a)>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0.056 0 ~ 0.585 4,林分间共有种较少,差异大,多样性高。表4参17Abstract: 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.[Ch,4 tab. 17 ref.]
-
Key words:
- forest ecology /
- plantations /
- plant species diversity /
- disturbance /
- limestone
-
-
链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2010.05.009

计量
- 文章访问数: 4150
- HTML全文浏览量: 242
- PDF下载量: 1250
- 被引次数: 0