基于BP神经网络模型的桂西资源富集区土地生态安全评价  

Evaluation of Land Ecological Security in Resource Abundant Areas of Western Guangxi Based on BP Neural Network Model

作　　者：姚燕怡 谢小英[1] 姚兰怡 邹润彦 黄天能[3] 黄毓 YAO Yanyi;XIE Xiaoying;YAO Lanyi;ZOU Runyan;HUANG Tianneng;HUANG Yu(School of Civil Engineering and Architecture,Guangxi University,Nanning 530004,China;Department of Land and Resources,Guangxi Mechanical and Electrical Industry School,Nanning 530023,China;Department of Economics and Trade,Guangxi University of Finance and Economics,Nanning 530003,China)

机构地区：[1]广西大学土木建筑工程学院,广西南宁530004 [2]广西机电工业学校国土资源科,广西南宁530023 [3]广西财经学院经济与贸易学院,广西南宁530003

出　　处：《广东农业科学》2020年第4期139-146,共8页Guangdong Agricultural Sciences

基　　金：广西壮族自治区自然科学基金(2018GXNSFAA281316);广西财经学院校级课题项目(2019XJ009);广西职业教育智慧国土专业群发展研究基地项目(桂职教成〔2018〕37号)。

摘　　要：【目的】科学客观地进行土地生态安全评价,提出可行有效的土地生态系统优化对策,为桂西资源富集区土地生态安全的维护及未来发展提供参考。【方法】基于BP神经网络方法构建土地生态安全评价模型,通过分析影响土地生态系统的自然、经济、社会3个主导因素,建立桂西资源富集区土地生态安全评价指标系统,对2008-2017年桂西资源富集区土地生态安全程度进行评价。【结果】桂西资源富集区2008-2017年土地生态安全程度均属于一般安全状态,且由一般安全状态逐步接近较安全状态;其中百色市、河池市、崇左市分别在不同因素下的土地生态安全程度存在较大差异,且差异在逐年增大。【结论】为了避免桂西资源富集区土地生态安全系统存在发展失衡的倾向,建议桂西资源富集区政府优化营商环境,坚持"绿水青山就是金山银山";制定合理的耕地保护政策,缓解人地矛盾关系。【Objective】The study is to scientifically and objectively evaluate the land ecological security,and propose feasible and effective land ecosystem optimization strategies,which can provide references for the maintenance and future development of land ecological security in the resource-abundant areas of western Guangxi.【Method】The land ecological security evaluation model was built based on the BP neural network method.By analyzing three leading factors(i.e.:natural,economic,and social factors)affecting the land ecosystem,an evaluation index system for land ecological security in the resource-abundant areas of western Guangxi was established to evaluate the land ecological safety level in the western resource-abundant areas from 2008 to 2017.【Result】The land ecological security level in the resource-abundant areas of western Guangxi from 2008 to 2017 belonged to the general security state,and the general security state gradually approached to safer state.There were significant differences in land ecological security of Baise City,Hechi City and Chongzuo City under different factors and the differences were increasing year by year.【Conclusion】In order to avoid the unbalanced development of the land ecological security system in the resource-abundant areas of western Guangxi,It is recommended that governments in the resource-abundant areas of western Guangxi should optimize the business environment,adhere to the principle of"lucid waters and lush mountains are invaluable assets",and formulate reasonable farmland protection policies to ease the contradiction between people and land.

关 键 词：土地生态安全评价 BP神经网络 桂西资源富集区 生态环境保护 

分 类 号：F301[经济管理—产业经济]