[1]方海东,纪中华,杨艳鲜,等.金沙江干热河谷新银合欢人工林物种多样性研究[J].水土保持研究,2005,12(01):135-137.
　FANG Hai-dong,JI Zhong-hua,YANG Yan-xian,et al.The Study on Species Diversity of Leucaena leucocephala Plantation in Jinsha River Hot and Dry Valley[J].Research of Soil and Water Conservation,2005,12(01):135-137.
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金沙江干热河谷新银合欢人工林物种多样性研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 12 期数: 2005年01期 页码: 135-137 栏目: 出版日期: 1900-01-01
Title:
The Study on Species Diversity of Leucaena leucocephala Plantation in Jinsha River Hot and Dry Valley
作者:
方海东, 纪中华, 杨艳鲜, 拜得珍, 廖承飞
云南省农科院热带亚热带经济作物研究所, 云南, 元谋, 651300
Author(s):
FANG Hai-dong, JI Zhong-hua, YANG Yan-xian, BAI De-zhen, LIAO Cheng-fei
Tropical and Subtropical Economical Crops Research Institution, Yunnan Academy of Agricultural Sciences, Yuanmou Yunnan 651300, China
关键词:
干热河谷; 新银合欢人工林; 物种多样性
Keywords:
hot and dry valley; Leucaena leucocephala plantation; species diversity
分类号:
X176
摘要:
我国土地退化现象相当严重，主要表现在大面积土壤侵蚀，使系统生产力普遍降低。金沙江干热河谷是典型严重退化区域之一。通过对金沙江干热河谷新银合欢人工林物种多样性方面的研究，讨论了种在退化生态系统功能恢复中的作用及物种多样性与生态系统功能的关系。结果表明，林内郁闭度为0.75，平均胸径为6.67cm，平均高度为8.01mm，物种丰富度，Shannon-Wiener指数，Simpson指数由草层向灌木层、乔木层逐层递减。新银合欢作为生态恢复初期的先锋树种明显改善了生态系统的微环境，为后继种的入侵和定居创造了条件。
Abstract:
The land degradation is very serious in our country, which displays in the great areas of soil erosion,and it makes ecosystem productivity generally reduced.Hot-dry valley of Jinsha River is one of the typical serious degradation areas.The authors investigate and study the species diversity of Leucaena leucocephala plantation,discuss its function of ecology and the relation between species diversity and the function of ecosystem.The results show that plantation density is 0.75,DBH is 6.67 cm,average height is 8.41 m,and species richness,Shannon-Wiener index,Simpson index generally reduce from herb layer to arbor layer.Leucaena leucocephala plantation,as pioneer species in the initial stage of ecosystem restoration,improves micro-environment of ecosystem,and creates favorable conditions for post species to intrude and colonize.

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备注/Memo

收稿日期:2004-4-7。
基金项目:"十五"国家攻关项目："中国西部重点脆弱生态区综合治理与示范"（2001BA606A-07）
作者简介:方海东（1979- ），男，研究实习员，林学学士，主要从事生态恢复研究工作.

更新日期/Last Update: 1900-01-01