摘要
对川西高原森林物种多样性及其生态功能进行了研究。结果表明 ,在采伐迹地上 ,人工林的物种多样性及其生态功能随着林龄的增长呈现增加和增强的趋势。天然林群落的物种多样性随着顺行演替的进行逐渐增加 ,至顶极阶段 ,群落的物种多样性有所减少。但是 ,群落的生态功能却始终随着演替的进行逐步增强。此外 ,在相似立地条件、同密度和同龄的天然林中 ,针阔叶混交林的物种多样性指数要高于针叶混交林 ;而在相似立地条件、同龄的天然林中 。
This paper studies the species diversity and its ecological function in a plateau area of western Sichuan. The results show that the species diversity in the plantations on the cutover has a tendency to increase and its ecological service function to improve with the stand age growth. The species diversity in forest communities also gradually increases at different succession stages before it reaches the climax stage. But that in the climax communities slightly decreases before it reaches a relatively constant status. Ecological service functions of communities are gradually strengthened with the process of succession. In addition, species diversity in a stand in a similar site and at a same age differs in forest types. Species diversity index within a coniferous and broad leaved mixed forest is larger than that within a coniferous forest. Meanwhile, species diversity becomes rich as the tree density increases.
出处
《成都理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2003年第4期436-440,共5页
Journal of Chengdu University of Technology: Science & Technology Edition
关键词
生物多样性
生态功能
川西高原
人工林
森林
bio diversity
ecological function
plateau area of western Sichuan
