Ecosystem Health Evaluation of Grassland Ecosystem Before and After Grazing in Aletai Forest Region

Yin Xikai; Ye Mao; Zhao Fanfan; Zhou Quan

doi:10.13961/j.cnki.stbctb.2021.06.029

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Ecosystem Health Evaluation of Grassland Ecosystem Before and After Grazing in Aletai Forest Region

- Ecosystem Health Evaluation of Grassland Ecosystem Before and After Grazing in Aletai Forest Region
- Bulletin of Soiland Water Conservation Vol. 41, Issue 6, Pages: 220-225(2021)
- 作者机构：
  
  1. 新疆师范大学地理科学与旅游学院,新疆,乌鲁木齐,830054
  2. 新疆干旱区湖泊环境与资源实验室,新疆,乌鲁木齐,830054
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2021.06.029
  CLC： S812.6
- Published：2021
- 稿件说明：
移动端阅览
Yin Xikai, Ye Mao, Zhao Fanfan, et al. Ecosystem Health Evaluation of Grassland Ecosystem Before and After Grazing in Aletai Forest Region[J]. Bulletin of Soiland Water Conservation, 2021, 41(6): 220-225.
DOI：

Yin Xikai, Ye Mao, Zhao Fanfan, et al. Ecosystem Health Evaluation of Grassland Ecosystem Before and After Grazing in Aletai Forest Region[J]. Bulletin of Soiland Water Conservation, 2021, 41(6): 220-225. DOI： 10.13961/j.cnki.stbctb.2021.06.029.

摘要

[目的] 对阿勒泰林区放牧前后的草地生态系统进行健康评价，为该区退化草地恢复与管理提供科学依据。[方法] 运用了VOR综合指数生态系统健康评价模型，并结合物种多样性测度中的Margalef丰富度指数、Simpson优势度指数、Shannon-Wiener多样性指数和Alatalo均匀度指数，对阿勒泰林区草地生态系统整体状况进行了评估。[结果] ①各监测点Margalef指数差异表现在旅游区放牧前后差异极显著（p<0.01），牧道放牧前后差异显著（p<0.05）；前山山坡、牧道的Simpson指数和Shannon-Wiener指数的放牧前后均表现出差异极显著（p<0.01）；各监测点Alatalo指数放牧前后差异不显著。②阿勒泰林区放牧后草地生态系统结构较稳定；阿勒泰林区放牧前后草地生态系统健康的组织力（O）、恢复力（R）值差异显著（p<0.05）。③VOR指数表现为牧道放牧前后差异极显著（p<0.01），其他监测点的VOR指数放牧前后差异不显著。④各监测点放牧前后草地健康状况评价结果一致，为“健康”状态，但各监测点的VOR综合指数值存在差异。[结论] 阿勒泰林区放牧后草地生态系统结构较稳定，监测点旅游区的Margalef丰富度放牧前后差异极显著（p<0.01），前山山坡、牧道的Simpson优势度和Shannon-Wiener多样性放牧前后均差异极显著（p<0.01）；各监测点放牧前后草地健康状况评价为“健康”。

Abstract

[Objective] The health of the grassland ecosystem before and after grazing in the Altay forest area was assessed

in order to provide a scientific basis for the restoration and management of degraded grassland in the area.[Methods] The VOR ecosystem health evaluation model was used combined the Margalef richness index

Simpson dominance index

Shannon-Wiener diversity index

and Alatalo evenness index to evaluate the overall status of the grassland ecosystem in the Aletai forest area.[Results] ① The Margalef index of each monitoring point was high significantly different before and after grazing in tourist areas (p<0.01)

and was significantly different before and after grazing in pastoral roads (p<0.05); The Simpson index and Shannon-Wiener index of the front mountain slopes and pastoral roads showed extremely significant differences before and after grazing (p<0.01); The Altalo index of each monitoring site had no significant difference before and after grazing. ② The structure of the grassland ecosystem after grazing in the Aletai forest area was relatively stable; The organizational strength (O) and the resilience (R) value of the healthy grassland ecosystem before and after grazing in the Aletai forest area were significantly different (p<0.05). ③ The VOR index showed that the difference before and after grazing was extremely significant (p<0.01)

while the VOR index of other monitoring points had no significant difference. ④ The evaluation results of the health status of the grassland before and after grazing at each monitoring point were consistent

which was a "healthy" state

but the VOR composite index value of each monitoring point was different.[Conclusion] The grassland ecosystem structure is relatively stable after grazing in the Aletai forest area. The Margalef abundance in the tourist area of the monitoring point is significantly different before and after grazing (p<0.01). The Simpson dominance and Shannon-Wiener diversity of the front mountain slopes and pastoral roads are all different before and after grazing. The health status of the grassland before and after grazing at each monitoring point was evaluated as "healthy".

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