放牧对两河源牧区草地生态系统健康及物种多样性的影响
Effects of Grazing on the Health and Species Diversity of Grasslands in the Two-river Source Pastoral Areas
郭军访 1陈维龙2
作者信息
- 1. 新疆阿尔泰山两河源自然保护区管理局,新疆 阿勒泰 836000
- 2. 新疆师范大学地理科学与旅游学院,新疆 乌鲁木齐 830054;新疆干旱区湖泊环境与资源实验室,新疆 乌鲁木齐 830054
- 折叠
摘要
该试验的目的是通过对两河源牧区放牧前后的草地生态系统进行健康评价和多样性分析,为牧区的草地恢复与治理提供依据和参考.该研究以两河源6牧区为例,采用样方法对该地区的草地进行调查,运用VOR综合评价模型和物种多样性测度中的Margalef指数、Simpson指数、Shannon-Wiener指数、Alatalo指数对两河源牧区草地生态系统健康进行综合评价.结果表明,放牧会影响草地生态系统的丰富度、多样性和优势度,但不会影响草地健康状况,两河源牧区放牧强度属于合理放牧范围内.
Abstract
The aim of this experiment is to provide a basis and reference for the restoration and management of pasture grasslands by assessing the health and diversity of grassland ecosystems before and after grazing in the Two-river headwater pastures.In this study,six grasslands in the Two-river Source were sampled and the health of grassland ecosystems in the Two Rivers headwater rangelands was comprehensively assessed using the VOR comprehensive assessment model and the Margalef Index,Simpson Index,Shannon-Wiener Index and Alatalo Index of species diversity determination.The results showed that grazing affects the richness,diversity and dominance of grassland ecosystems,but does not affect the health of grasslands,and that the grazing intensity in the Two-river Source pastoral areas is within the range of reasonable grazing.
关键词
放牧前后/草地健康/物种多样性/生物量/两河源牧区Key words
before and after grazing/grassland health/species diversity/biomass/Two-river Source pastoral area引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据