我国省域尺度森林生态系统恢复力评价及敏感性分析

doi:10.19741/j.issn.1673-4831.2021.0465

摘要/Abstract

摘要： 研究我国省域尺度上森林生态系统恢复力，并量化各指标权重对恢复力的影响，结果可为宏观尺度森林可持续经营提供决策依据。从脆弱性和应对能力2大层面出发，基于生态压力-状态-响应模型构建我国省域尺度森林生态恢复力评估指标体系；采用单因素轮换方法量化各指标权重对森林生态系统恢复力评估结果的影响。结果表明，各省域森林生态系统恢复力水平较低，森林生态系统脆弱性、应对能力和恢复力指数平均值分别为0.309、0.323和0.320；森林生态系统应对能力对森林生态系统恢复力的影响高于森林生态系统脆弱性，两者影响系数分别为0.720和0.280；单位面积蓄积量、鼠害防治率和退化林修复面积对森林生态系统恢复力的敏感性最高，防火投入、封山育林面积和森林抚育投资对森林生态系统恢复的敏感性较低。总体上，各省域森林生态系统恢复力水平较低，但森林生态系统恢复力评价结果相对稳定，采用熵值法确定的评价权重较合理。

关键词: 森林生态系统, 恢复力, 指标权重, 敏感性

Abstract: Studying the resilience of forest ecosystems at the provincial scale in China and quantifying the impact of each index weight on resilience could provide a decision-making foundation for sustainable forest management at the macroscale. This paper constructed a provincial-scale forest ecological resilience evaluation index system based on the ecological pressure-state-response model from the two aspects of vulnerability and adaptive capacity and adopted the OAT (one-at-a-time) method to quantify the weight of each index's impact on the assessment results of forest ecosystem resilience. The results show that the average values of the vulnerability, adaptive capacity and resilience index of the forest ecosystem were 0.309, 0.323 and 0.320, respectively; the impact of forest ecosystem response capacity on forest ecosystem resilience was higher than that of forest ecosystem vulnerability, with coefficients of 0.720 and 0.280, respectively. Accumulation per unit area, the control rate of rodent damage and the restoration area of degraded forests were the most sensitive factors to forest ecosystem resilience, while fire prevention investment, the area of closed hills for afforestation and investment in forest management were less sensitive. Overall, the resilience level of the provincial forest ecosystem was relatively low, and the evaluation results of forest ecosystem resilience were generally and relatively stable, which indicates that the weights initially determined by the entropy method are reasonable.

Key words: forest ecosystem, resilience, index weight, sensitivity

中图分类号:

秦会艳, 刘婷婷, 黄颖利. 我国省域尺度森林生态系统恢复力评价及敏感性分析[J]. 生态与农村环境学报, 2022, 38(3): 281-288.

QIN Hui-yan, LIU Ting-ting, HUANG Ying-li. Evaluation and Sensitivity Analysis of Forest Ecosystem Resilience at Provincial Scale in China[J]. Journal of Ecology and Rural Environment, 2022, 38(3): 281-288.

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