陇川县耕地资源安全评价研究

发布时间：2018-05-21 04:01

本文选题：耕地资源安全 + 熵值法　；参考：《云南大学》2014年硕士论文

【摘要】：耕地资源是人类生存和发展的重要物质基础,承担着保障国家粮食安全和维护社会经济持续稳定发展的重要任务。耕地资源安全问题已是资源与环境安全、社会经济可持续发展的重要课题。中国已采取了世界上最为严格的耕地保护政策,但随着经济的发展和社会的进步,耕地资源安全屡受威胁,使人口、粮食、能源、资源和环境之间的矛盾更加突出。因此,对粮食主产区的耕地资源安全状况进行评价显得尤为重要。本文首先对陇川县耕地资源现状进行了分析,包括耕地资源数量变化及流向、人均耕地面积、耕地压力指数和耕地人口承载力分析；然后从耕地资源安全的概念出发,从耕地数量安全、质量安全和生态安全角度分析耕地资源安全的影响因素,为耕地资源安全评价指标的确定提供参考；通过指标筛选确定出耕地资源安全评价的指标,并构建了基于“数量-质量-生态”的耕地资源安全评价指标体系,运用熵值法确定指标的权重；采用行业标准或区域背景为基准确定指标的安全阈值,运用综合指数法计算出耕地资源的综合安全得分并划分安全程度的等级。本文对2012年陇川县耕地资源安全综合值进行了评价,并分别对数量安全、质量安全和生态安全进行了分析,最后对维护区域耕地资源安全提出了建议。研究表明,陇川县9个乡镇中城子镇和户撒阿昌族乡处于非常安全状态,护国乡、清平乡、章凤镇、陇把镇和景罕镇处于较安全状态,勐约乡和王子树乡处于临界安全状态。从耕地资源数量安全来看,数量安全程度较高的是城子镇、清平乡和陇把镇,耕地数量安全程度最低的是章凤镇；从耕地资源质量安全来看,户撒阿昌族乡的耕地质量安全程度最高,其次是城子镇和章凤镇,耕地质量安全程度最低的是王子树乡。从耕地资源生态安全来看,陇川县整体生态安全水平较低,最高值仅为0.1553,各乡镇耕地生态安全水平相差不大。护国乡的耕地资源生态安全水平相对较高,最低的是章凤镇。
[Abstract]:The cultivated land resource is the important material foundation of human survival and development, and undertakes the important task of ensuring the national food security and maintaining the sustainable and stable development of social economy. The security of cultivated land resources is an important subject for the sustainable development of resources, environment and social economy. China has adopted the strictest policy of cultivated land protection in the world, but with the development of economy and society, the security of cultivated land resources is threatened frequently, which makes the contradiction between population, grain, energy, resources and environment more prominent. Therefore, it is very important to evaluate the security of cultivated land in the main grain producing areas. This paper first analyzes the present situation of cultivated land resources in Longchuan County, including the change and direction of cultivated land resources, the area of cultivated land per capita, the pressure index of cultivated land and the population carrying capacity of cultivated land, and then proceeds from the concept of cultivated land resource security. From the aspects of quantity safety, quality safety and ecological security of cultivated land, the paper analyzes the influencing factors of cultivated land resource security, and provides a reference for determining the evaluation index of cultivated land resource security. The evaluation index system of cultivated land resource security based on "quantity, quality and ecology" is constructed, the weight of the index is determined by entropy method, and the safety threshold of the index is determined by using industry standard or regional background as the benchmark. The comprehensive security score of cultivated land resources was calculated by the method of comprehensive index and the grade of safety degree was classified. This paper evaluates the comprehensive value of cultivated land resource security in Longchuan County in 2012, analyzes the quantity safety, quality safety and ecological security, and finally puts forward some suggestions for maintaining the regional cultivated land resource security. The study shows that Chengzi Town and Husa Achang Township in 9 townships of Longchuan County are in a very safe state, that of Guoguo Township, Qingping Township, Zhangfeng Town, Longyao Town and Jinghan Town is in a relatively safe state, and that Mengyao Township and Wang Zishu Township are in a critical safe state. From the point of view of the quantity security of cultivated land resources, the cities of Chengzi Town, Qingping Township and Longha Town are the ones with higher degree of quantitative security. The lowest degree of safety of cultivated land quantity is Zhangfeng Town; from the point of view of the quality and safety of cultivated land resources, The quality and safety degree of cultivated land in Husa Achang township was the highest, followed by Chengzi Town and Zhangfeng Town, and the lowest degree of cultivated land quality and safety was Wang Zishu Township. According to the ecological security of cultivated land resources, the overall ecological security level of Longchuan County is relatively low, the highest value is only 0.1553, and the level of ecological security of cultivated land in different villages and towns is not different. The ecological security level of cultivated land resources in Guanguo Township is relatively high, the lowest is Zhangfeng Town.
【学位授予单位】：云南大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：F323.211

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