Effects of Different Ecological Restoration Measures on Reconstruction of Slope Vegetation in Southeastern Xizang Autonomous Region

Jiang Yunqing; Wang Guoyan; Huang Mengyue; Zhang Hongnan; Peng Peihao; Pei Xiangjun; Li Jingji; Tang Xiaolu; Yin Daqiu; Wang Shijun

doi:10.13961/j.cnki.stbctb.20230524.001

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Effects of Different Ecological Restoration Measures on Reconstruction of Slope Vegetation in Southeastern Xizang Autonomous Region

- Effects of Different Ecological Restoration Measures on Reconstruction of Slope Vegetation in Southeastern Xizang Autonomous Region
- Bulletin of Soiland Water Conservation Vol. 43, Issue 5, Pages: 187-194(2023)
- 作者机构：
  
  1. 成都理工大学生态与景观研究所,四川,成都,610059
  2. 成都理工大学旅游与城乡规划学院,四川,成都,610059
  3. 成都理工大学生态环境学院,四川,成都,610059
  4. 华能西藏雅鲁藏布江水电开发投资有限公司,西藏,拉萨,850000
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.20230524.001
  CLC： Q948.1
- Published：2023
- 稿件说明：
移动端阅览
Jiang Yunqing, Wang Guoyan, Huang Mengyue, et al. Effects of Different Ecological Restoration Measures on Reconstruction of Slope Vegetation in Southeastern Xizang Autonomous Region[J]. Bulletin of Soiland Water Conservation, 2023, 43(5): 187-194.
DOI：

Jiang Yunqing, Wang Guoyan, Huang Mengyue, et al. Effects of Different Ecological Restoration Measures on Reconstruction of Slope Vegetation in Southeastern Xizang Autonomous Region[J]. Bulletin of Soiland Water Conservation, 2023, 43(5): 187-194. DOI： 10.13961/j.cnki.stbctb.20230524.001.

摘要

[目的] 评价青藏高原派墨公路生态恢复过程中环境因素对边坡植物群落的影响，为藏东南工程扰动区生态恢复计划提供理论依据。[方法] 以藏东南新修派墨公路为研究对象，基于沿线边坡生态恢复植物群落调查，分析群落盖度、物种多样性指数(Shannon-Wiener指数、Simpson多样性指数、Margalef丰富度指数、Pielou均匀度指数)、群落加权性状值(比叶面积、叶干物质含量、叶氮含量、叶磷含量)与环境变量(海拔、修复措施)的关系，探究当前恢复重建植物群落对环境变量及工程措施的响应。[结果] ①海拔显著影响Margalef丰富度指数、叶干物质含量(p＜0.05)； ②高强度的措施显著提高群落盖度、比叶面积、叶氮含量(p＜0.05)，但对叶磷含量有显著负向作用(p＜0.05)； ③人为高度干预的SJP技术能够显著增加高海拔植物的叶干物质含量，对群落修复效果总体较好。[结论] 海拔高度和修复措施是派墨公路沿线边坡植物群落恢复的主要影响因素。随着海拔升高，植被自然恢复难度增大。应加大人为修复措施强度，避免引起高寒地区生态退化。

Abstract

[Objective] The effects of environmental factors on the plant community of a slope during ecological restoration objective of Pai-Mo Highway in Qinghai-Xizang Plateau were analyzed in order to provide theoretical basis for ecological restoration plan of disturbed area in Southeast Xizang. [Methods] We studied an area of the newly constructed Pai-Mo Highway in Southeastern Xizang. We determined the relationships between community cover

species diversity indexes (Shannon-Wiener index

Simpson diversity index

Margalef richness index

Pielou evenness index)

community weighted trait values (specific leaf area

leaf dry matter content

leaf nitrogen content

and leaf phosphorus content)

and environmental variables (elevation

restoration measures) based on an investigation of the plant community of an ecological restoration area along a slope. [Results] ① Elevation significantly influenced the Margalef richness index and leaf dry matter content (p＜0.05); ② High-intensity measures significantly increased community cover

specific leaf area

and leaf nitrogen content (p＜0.05)

but significantly decreased leaf phosphorus content (p＜0.05); ③ the SJP technique with high human intervention could significantly increase the leaf dry matter content of high-elevation plants and showed an overall greater efficacy. [Conclusion] The primary determinants of the regeneration of plant communities on slopes along the Pai-Mo Highway are elevation and restoration measures. The difficulty associated with natural vegetation restoration increases as elevation increases

and artificial restoration measures need to be intensified to prevent ecological degradation in alpine regions.

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