Spec ies D iversity ofMa in Commun ities in Hot and Dry Va lley, Yuanmao County

YANG Zhen-yin; SU Jian-rong; WANG Yun; LI Zheng-hong

This paper studied the species diversity of natural and p lantation community in hot and dry valley ofYuanmao County, based on field investigation data and by using Patrick richness index ( S ) , Shannon-Wienerdiversity index (H) , Simp son dominance index (D ) ,Alatalo evenness index ( E) and Pielou evenness index. Theresults showed that: (1) the diversity of communities in hot and dry valleywas lower. The values of S, H,D respectivelywas 3. 923 - 19. 583, 0. 913 - 2. 000 and 0. 178 - 0. 510. The Patrick richness index of p lantation community wassharp ly lower than natural communities’. The Shannon2W iener diversity index of p lantation communities withdominance tree was higher than others. The Alatalo evenness index of p lantation communitywas sharp ly higher thannatural communities’. (2) The Patrick richness index of the communitieswere in the order of tree herb > shrub. (3) The content oforganic, N, P, Hydrolytic N of natural communitieswas higher than p lantation communitieswhich indicated that thenatural communities had good effect to imp roving soil fertility.

1. The Chinese Academy of Forestry, Beijing　100091, China

2. Research Institute of Resource Insects, CAF, Kunming　650224, Yunnan, China

3. The Forestry Administration of Yuanmao County, Yuanmao　651300, Yunnan, China

Received Date: 2007-10-16

Abstract: This paper studied the species diversity of natural and p lantation community in hot and dry valley ofYuanmao County, based on field investigation data and by using Patrick richness index ( S ) , Shannon-Wienerdiversity index (H) , Simp son dominance index (D ) ,Alatalo evenness index ( E) and Pielou evenness index. Theresults showed that: (1) the diversity of communities in hot and dry valleywas lower. The values of S, H,D respectivelywas 3. 923 - 19. 583, 0. 913 - 2. 000 and 0. 178 - 0. 510. The Patrick richness index of p lantation community wassharp ly lower than natural communities’. The Shannon2W iener diversity index of p lantation communities withdominance tree was higher than others. The Alatalo evenness index of p lantation communitywas sharp ly higher thannatural communities’. (2) The Patrick richness index of the communitieswere in the order of tree herb > shrub. (3) The content oforganic, N, P, Hydrolytic N of natural communitieswas higher than p lantation communitieswhich indicated that thenatural communities had good effect to imp roving soil fertility.

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Spec ies D iversity ofMa in Commun ities in Hot and Dry Va lley, Yuanmao County

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