“三生空间”视角下基于云模型的崩岗侵蚀危害评价  

Cloud Model-Based Assessment of Benggang Erosion Hazard in the Red Soil Area of South China from a Production-Living-Ecology Space Perspective

作　　者：林小慧 何玥 黄炎和[1] 林金石[1] 季翔 LIN Xiaohui;HE Yue;HUANG Yanhe;LIN Jinshi;JI Xiang(Fujian Agriculture and Forestry University,Fuzhou 350002,China;Technology Innovation Center for Monitoring and Restoration Engineering of Ecological Fragile Zone in Southeast China,Ministry of Natural Resources,Fuzhou 350001,China)

机构地区：[1]福建农林大学,福州350002 [2]自然资源部东南生态脆弱区监测修复工程技术创新中心,福州350001

出　　处：《山地学报》2024年第3期411-421,共11页Mountain Research

基　　金：国家自然科学基金(41601557);自然资源部创新中心资助项目(KY090000042021007);福建农林大学杰出青年科研人才计划(XJQ201933)。

摘　　要：崩岗是中国南方红壤区最严重的土壤侵蚀形式之一。崩岗侵蚀危害的类型与大小均存在空间差异,崩岗危害评估与风险防控应具备针对性和时效性,并提高评价结果的空间精度。本研究以福建省安溪县官桥镇为研究区,基于生产、生活、生态空间视角构建崩岗侵蚀危害评价模型,通过云模型对2020年崩岗侵蚀危害进行评价,并提出相应的治理措施。结果表明:(1)经济密度、人口密度和崩岗面积占比的权重较大,分别为0.278、0.164和0.148,说明经济社会因素和崩岗侵蚀的直接影响因素对危害程度的影响最大。(2)崩岗侵蚀危害呈中部和东北部高、四周低的空间分布特征,且对生产空间造成的危害最高,生态空间次之,生活空间最小,在风险管理体系中应重点预防中部和东北部的崩岗侵蚀危害,尤其是对生产空间的危害防控。(3)对比基于云模型与未应用云模型的评价结果,极高危害V区的空间分布趋势相似;应用云模型得出的空间评价结果更加细化,更能体现崩岗侵蚀危害的整体水平。本研究可进一步丰富崩岗侵蚀危害评价方法,并为崩岗治理提供建议。Benggang is one of the most serious forms of soil erosion in the red soil areas of southern China.Since there exists spatial differences in the types and sizes of Benggang hazards,approaches to Benggang hazard assessment and risk control practices should be targeted and time-sensitive,and require more spatial accuracy of assessment results.In this study,it demonstrated a proper approach of hazard assessment of Benggang in Guanqiao town,Anxi county,Fujian province,a red soil area in southern China.A cloud model-based assessment model of Benggang hazard was built from a production-living-ecology space perspective,and then it was justified by a case study of 2020 for the town,followed by feasible countermeasures to the Benggang occurrences to be proposed.(1)Economic density,population density,and the proportion of the Benggang area to the area of each village in Guanqiao town were dominant factors,with weights of 0.278,0.164,and 0.148,respectively,suggesting that the economic and social factors and the direct influencing factors of Benggang collectively regulated hazard level.(2)The Benggang hazards was characterized spatially by a high clustering in the central and northeastern part of the town,but a sparse formation in the surrounding area.It caused the highest harm to productive-space,followed by ecology-pace,and the least to living-space.It is advisable to address the prevention of the Benggang hazards in the central and northeastern part,especially for the production-space,if any in a risk management system.(3)As comparing the evaluation results based on the cloud model and a non-applied cloud model/regular model,the spatial distribution trends of the very high hazard V zones were almost identical for the both models,but the cloud model-based assessment produced more refined and detailed output,revealing the overall pattern of the Benggang hazards in the study areas.This study not only enriches methodology for evaluating Benggang hazards but also offers suggestions for an proper Benggang management policy.

关 键 词：崩岗 三生空间 云模型 危害评价 

分 类 号：S157[农业科学—土壤学]