王韵秋, 胡业翠, 高梦雯, 牛帅. 多维视角下广西喀斯特石漠化地区国土空间生态修复分区[J]. 农业工程学报, 2023, 39(1): 223-231. DOI: 10.11975/j.issn.1002-6819.202210065
    引用本文: 王韵秋, 胡业翠, 高梦雯, 牛帅. 多维视角下广西喀斯特石漠化地区国土空间生态修复分区[J]. 农业工程学报, 2023, 39(1): 223-231. DOI: 10.11975/j.issn.1002-6819.202210065
    WANG Yunqiu, HU Yecui, GAO Mengwen, NIU Shuai. Land-space ecological restoration zoning of karst rocky desertification areas in Guangxi from multi-dimensional perspectives[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2023, 39(1): 223-231. DOI: 10.11975/j.issn.1002-6819.202210065
    Citation: WANG Yunqiu, HU Yecui, GAO Mengwen, NIU Shuai. Land-space ecological restoration zoning of karst rocky desertification areas in Guangxi from multi-dimensional perspectives[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2023, 39(1): 223-231. DOI: 10.11975/j.issn.1002-6819.202210065

    多维视角下广西喀斯特石漠化地区国土空间生态修复分区

    Land-space ecological restoration zoning of karst rocky desertification areas in Guangxi from multi-dimensional perspectives

    • 摘要: 国土空间生态修复分区是确定国土整治与生态修复重点区域和进行工程项目布局的空间指导与前提。该研究以广西河池为例,构建"自然本底-主导生态功能-生态胁迫问题"综合评估框架,进行国土空间生态修复分区划定研究。结果表明:1)河池市共划定6个自然本底类型区,"一江两河三山"的自然本底特征决定了分区的宏观构成;2)生态系统服务功能呈现显著区域差异,粮食生产功能集中分布在东北部,固碳释氧功能集中分布在西北部,水土保持、水源涵养及生境质量功能在南部较为突出;3)各项生态胁迫问题严重程度整体呈现东南向西北递减的特点,石漠化、生态退化问题集中分布在东南部,水环境综合治理与土地整治潜力在东北部尤为突出,矿山地质灾害、水土流失在全域内均有分布;4)综合自然本底分区、主导生态功能分区、生态胁迫问题识别,最终将河池市划分为15个生态修复分区,并提出相应的生态修复策略。研究可为河池市生态修复实践提供参考,并为其他区域生态修复分区提供技术借鉴。

       

      Abstract: Ecological restoration zoning has been one of the most important prerequisites for the efficient ecological restoration in recent years. An accurate identification can be determined the key ecological restoration areas and developing engineering projects. Taking the Hechi areas of Guangxi Province in China as an example, this study aims to build a zoning framework of "natural conditions-dominant ecological functions-ecological stress problems" using the concept of mountains-rivers-forests-farmlands-lakes-grasses-deserts. The quantitative evaluation and qualitative zoning were combined to delineate the ecological restoration zones. Firstly, the natural regions were the basic components for the ecological restoration, the integrity of the natural elements, and the continuity of geographic pattern. The natural regions were divided according to natural conditions such as watershed distribution, geomorphological classification, fractional vegetation cover, and vegetation type distribution. Secondly, the ecological evaluation was carried out on the ecosystem in the study area, in order to determine the objectives and tasks of ecological restoration. Both ecological functions and ecological stress problems were considered during evaluation. According to the restoration needs, five indicators were selected from the ecosystem service function, including the habitat quality, water conservation, carbon storage and oxygen release, soil and water conservation, food production. Six indicators were set as the ecological stress problems, including the stony desertification, soil erosion, mine geological hazards, ecological degradation, restoration potential of water environment, and potential of comprehensive land consolidation. After that, 11 indicators were evaluated and graded to obtain the distribution pattern of dominant ecological functions and ecological stress problems using the K-means cluster analysis and ArcGIS visualization function. Finally, the comprehensive analysis was weighed via the dominant ecological functions and ecological stress problems of the natural regions. Six natural regions were divided into 15 ecological restoration subregions using sub-watershed boundaries and township administrative boundaries. The results showed that: 1) The strong functions of ecological service were observed in the mountainous and hilly ecological restoration subregions in the northwest and northeast. Ecological stress problems were mainly geological disasters, such as historical mines, soil erosion, as well as stony desertification. One suggestion was proposed that these subregions can be expected to focus on the protection and mine restoration for the disaster prevention in small watershed. 2) The weak functions of ecological service were found in the ecological restoration subregions in the Longjiang Plain and hilly region or the Panyang River mesa region. The comprehensive and relatively serious problems were posed the ecological stress on the heavy task of ecological restoration. One suggestion was addressed to carry out the comprehensive regulation of multiple ecological systems in these subregions. 3) An important karst area was found in the Duyang Mountain mountainous and hilly region in the south, with the serious problems of soil erosion and stony desertification. Correspondingly, the special ecological restoration should be carried out for the ecological restoration subregions. Quantitative ecological evaluation can provide a scientific and objective basis to delimitate the restoration zoning. By dividing and adjusting the ecological restoration zones with the boundaries of sub-watersheds and townships, the problems of separate protection and individual restoration of each element can be solved, ensuring the feasibility of restoration implementation. The finding can provide a strong reference for the comprehensive, systematic and holistic implementation unit delineation of mountains-rivers-forests-farmlands-lakes-grasses-deserts, together with the scientific basis for the delineation and implementation of key areas and key projects for the ecological restoration in Hechi of China.

       

    /

    返回文章
    返回