Species diversity and stability of natural secondary communities with different cutting intensities after ten years  

作　　者：WU Zhi-long ZHOU Xin-nian ZHENG Li-feng HU Xi-sheng ZHOU Cheng-jun 

机构地区：[1]Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002,China.

出　　处：《Journal of Forestry Research》2011年第2期205-208,共4页林业研究（英文版）

基　　金：supported by National Natural Science Foundation of China (30972359, 31070567);the Natural Science Foundation of Fujian Province (No.2006J0301, No.2008J0327,No.2009J0101);the Science Foundation of Science Technology of Fu-jian Province (No.2007N0002, No.2006F5006, No.2007F5010);the Science Foundation of Forestry Committee of Fujian Province (Forestry Science of Fujian[2006] No.7,No.14)

摘　　要：Species diversity and stability of natural secondary communities in different layers with different cutting intensities 10 years later were investigated by calculating Marglef Richness index（R）,Shannon-Wiener diversity index（H）,Simpson diversity index（P）,and Pielou Evenness index（J）.Results show that the values of R,H and P among different layers are listed in a decreasing order：the shrub layer the arbor layer the herb layer,all the three indices values reach the maximum under medium selective cutting intensity after 10 years.The J value of the shrub layer shows a concave parabolic change with the increase in cutting intensity;it shows a linear increase for the arbor layer,whereas the J value of the herb layer shows an opposite change pattern.The values of R at different cutting intensities had high significant difference,but other indices had not significant difference.The stability of communities at different cutting intensities after 10 years is non-cutting low selective cutting intensity medium selective cutting intensity high selective cutting intensity extra-high intensity clear cutting.The stability of communities at different cutting intensities after 10 years shows that the greater cutting intensities,the worse the stability is.Species diversity and stability of natural secondary communities in different layers with different cutting intensities 10 years later were investigated by calculating Marglef Richness index（R）,Shannon-Wiener diversity index（H）,Simpson diversity index（P）,and Pielou Evenness index（J）.Results show that the values of R,H and P among different layers are listed in a decreasing order：the shrub layer the arbor layer the herb layer,all the three indices values reach the maximum under medium selective cutting intensity after 10 years.The J value of the shrub layer shows a concave parabolic change with the increase in cutting intensity;it shows a linear increase for the arbor layer,whereas the J value of the herb layer shows an opposite change pattern.The values of R at different cutting intensities had high significant difference,but other indices had not significant difference.The stability of communities at different cutting intensities after 10 years is non-cutting low selective cutting intensity medium selective cutting intensity high selective cutting intensity extra-high intensity clear cutting.The stability of communities at different cutting intensities after 10 years shows that the greater cutting intensities,the worse the stability is.

关 键 词：community stability cutting intensity natural secondary forest species diversity 

分 类 号：S812[农业科学—草业科学] S718.54[农业科学—畜牧学]