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Application of coupling method of eco-socioeconomic system in national territory spatial ecological restorationplanning system of counties:A case study of Weiyuan county
Received date: 2020-07-09
Request revised date: 2020-11-01
Online published: 2021-11-28
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With the transformation brought by the renewal and reform of territorial space planning, the improvement of the value of territorial ecological space, the construction of security pattern and the integrated development of multiple elements are becoming more and more important. The establishment of the national territory development planning system is the great ecological significance, and ecological priority is the core value of the formation of the national territory development planning system. Among them, the ecological restoration planning at the county level is an important part of the current national territory development planning. This study takes the land space of Weiyuan county, Sichuan as the research object, analyzes its serious problems of ecological resources destruction, ecosystem disruption, and low ecological efficiency in the background of industrialization and urbanization. It is pointed out that the construction of ecological security pattern is the goal orientation of national territory ecological restoration planning, and the evaluation index system of coupling degree is constructed by using the coupling method of eco-socioeconomic system. From the three aspects of the restoration of ecological elements, the optimization of ecological structure and the promotion of ecosystem value, combined with the typical ecological engineering technology, the ecological restoration security pattern composed of point, line and area is constructed, and the countermeasures of ecological management and restoration are proposed. The results show that: (1) The ecological restoration planning of counties has the characteristics of multi-level objectives, system complexity and diversity of approaches, and the response planning countermeasures can be put forward from the macro, meso and micro levels. (2) The coupling degree of eco-socioeconomic system in Weiyuan fluctuates between 0.457 and 0.497, and the ecosystem and socioeconomic system are now in an antagonistic period and have a development trend in the running-in period. (3) According to the calculation results of coupling degree, comprehensive efficacy and index influence degree, the overall pattern of ecological restoration of "multi-corridor and multi-point, two veins and two rings, one screen and two areas" can be constructed. The study puts forward the special planning methods and practical application of ecological restoration at the county scale, which can provide new ideas and methods for the current national territory spatial ecological restoration planning system of counties.
YANG Pei-feng , JIAO Ze-fei . Application of coupling method of eco-socioeconomic system in national territory spatial ecological restorationplanning system of counties:A case study of Weiyuan county[J]. JOURNAL OF NATURAL RESOURCES, 2021 , 36(9) : 2308 -2319 . DOI: 10.31497/zrzyxb.20210910
Table 1 Evaluation index system of coupling degree of eco-sociosystem |
| 子系统 | 指标 | 权重 |
|---|---|---|
| 生态 | 土地覆盖指数A1 | 0.121 |
| 工业用地面积比A2 | 0.121 | |
| 林草业用地面积比A3 | 0.022 | |
| 水面率A4 | 0.028 | |
| 湿地面积比A5 | 0.028 | |
| 地形起伏指数A6 | 0.021 | |
| 植被覆盖率A7 | 0.136 | |
| 人均公园绿地面积A8 | 0.026 | |
| 土地退化指数A9 | 0.148 | |
| 社会经济 | 人口增长率B1 | 0.056 |
| GDP增长率B2 | 0.074 | |
| 第三产业产值增长率B3 | 0.069 | |
| 第二产业产值增长率B4 | 0.065 | |
| 城市化率B5 | 0.086 |
表2 生态—社会系统耦合度分类及耦合等级Table 2 Classification and characteristics of the coupling of eco-sociosystem |
| 耦合度取值 | 耦合等级 | 耦合特征 |
|---|---|---|
| C=0 | 最小耦合 | 系统之间或内部要素之间为无关状态,系统将无序发展 |
| 0<C≤0.3 | 低水平耦合 | 经济发展水平低,生态系统承载力强 |
| 0.3<C≤0.5 | 拮抗 | 经济进入快速发展时期,生态承载力下降 |
| 0.5<C≤0.8 | 磨合 | 经济与生态开始出现良性共振 |
| 0.8<C<1 | 高水平耦合 | 社会经济与生态相互促进 |
| C=1 | 最大耦合 | 耦合度最大,系统之间或系统内部要素之间达到共振耦合,系统趋向新有序结构 |
表3 基于耦合等级的生态—社会系统及子系统空间结构变化分析Table 3 Analysis of the spatial structure change of eco-sociosystem and subsystems based on coupling level |
| 耦合等级 | 生态系统空间结构 | 生态—社会系统空间结构 | 社会经济系统结构 | 空间变化特征 |
|---|---|---|---|---|
| 低水平耦合时期 (0<C≤0.3) | ![]() | 系统耦合空间被必要基础设施建设,呈割裂趋势 | ||
| 拮抗时期 (0.3<C≤0.5) | ![]() | 系统耦合空间被大量建设性破坏,呈破碎化趋势 | ||
| 磨合时期 (0.5<C≤0.8) | ![]() | 系统耦合空间被强人工干预修复,呈点状修复趋势 | ||
| 高水平磨合时期 (0.8<C<1) | ![]() | 系统耦合空间结合宏观调控,出现新型生态系统“斑块—廊道—基质” 趋势 | ||
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