四川省营山县土地生态安全评价

发布时间：2018-04-06 00:37

本文选题：土地生态安全评价　切入点：熵权法　出处：《四川师范大学》2016年硕士论文

【摘要】：在西部大开发的背景下,西部县域经济快速发展,城市化和农业现代化进程也在不断加快,同时也产生了大量的土地生态安全问题,受到了广泛的关注。本文通过查阅相关文献结合实地调查,建立“自然——经济——社会”概念模型的四川省营山县土地生态安全评价指标体系,运用熵权法结合灰色关联度分析法,评价并分析了营山县2008—2013年不同年份的土地生态安全关联度值及其土地生态安全等级。同时对不同的指标层也进行了同样的关联度计算及评价,并就其差异的原因进行了分析,并为营山县保障土地生态安全提出了建议与对策,本文研究主要内容和结论有如下几点:(1)2008—2013年,营山县土地生态安全等级总体上呈现上升趋势,灰色关联度值分别为R2008=0.5951,R2009=0.5383,R2010=0.5249,R2011=0.5278,R2012=0.571,R2013=0.759,从临界安全上升到较安全及安全等级。营山县在完成城市规划建设和旧城改造后,土地生态安全等级快速恢复至安全等级,原因在于营山县总体经济对外联系不密切,加之无大型工矿和污染企业,因此得以在城市建设间隙完成后土地生态安全快速恢复。(2)各年在自然指标层、经济指标层和社会指标层中灰色关联度度值及变化跟总体变化不一致,说明土地生态安全受到各评价指标的影响各不同,其中受经济层评价指标影响最大,灰色关联度值变化起伏也最大,变化区间在(0.38,0.71)之间。说明经济层是保护土地生态安全的重要方面。(3)在可持续发展大背景下,结合营山县具体实际情况,对如何保护和改善营山县土地生态安全提出了自己的见解。制定相关法律和地方性法规对土地生态安全进行保护;加强有关土地生态安全知识的教育和宣传;科学规划利用土地资源;重视农业现代化推进;建立监督检查机制;统筹城乡协调发展;消除城乡发展的制约因素;建立土地生态安全保护示范区;投入先进技术及资金维护土地生态安全。
[Abstract]:Under the background of the great development of the western region, the county economy in the west is developing rapidly, the process of urbanization and agricultural modernization is speeding up, and at the same time, a large number of land ecological security problems have been brought about, which have received extensive attention.In this paper, the index system of land ecological security evaluation in Yingshan County, Sichuan Province, is established by consulting relevant documents and field investigation, and the concept model of "nature, economy and society" is established, and the entropy weight method combined with grey relational degree analysis method is used to evaluate the land ecological security of Yingshan County, Sichuan Province.The correlation value of land ecological security and the grade of land ecological security in different years from 2008 to 2013 in Yingshan County were evaluated and analyzed.At the same time, the same correlation degree is calculated and evaluated for different index levels, and the reasons for the differences are analyzed, and suggestions and countermeasures are put forward for the protection of land ecological security in Yingshan County.After the completion of the urban planning and construction of Yingshan County and the renovation of the old city, the land ecological security level quickly recovered to the security level, because Yingshan County's overall economy was not closely related to the outside world, and there were no large-scale industrial, mining and polluting enterprises.Therefore, it is possible to quickly recover land ecological security after completion of the gap of urban construction.) in the natural index layer, the economic index layer and the social index layer, the grey correlation degree and changes in the natural index layer and the social index layer are not consistent with the overall changes.The results show that the land ecological security is affected by different evaluation indexes, in which the evaluation index of economic layer is the biggest, and the change of grey correlation value is the biggest, the range of change is between 0.38 and 0.71).It shows that economic layer is an important aspect of protecting land ecological security. Under the background of sustainable development, combining with the actual situation of Yingshan County, the author puts forward his own opinions on how to protect and improve the land ecological security in Yingshan County.To make relevant laws and local regulations to protect land ecological security; to strengthen the education and publicity of land ecological security knowledge; to make scientific planning and utilization of land resources; to attach importance to the modernization of agriculture; to establish a supervision and inspection mechanism;Coordinated development of urban and rural areas; elimination of constraints on urban and rural development; establishment of land ecological security protection demonstration zone; investment of advanced technology and funds to maintain land ecological security.
【学位授予单位】：四川师范大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：F301.2;X826

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