基于P-S-R模型的湖南省土地资源生态安全动态评价  

Dynamic Evaluation of Ecological Security of Land Resources in Hunan Province Based on Pressure-state-response Model

作　　者：王鹏[1] 况福民[1,2] 邓育武[1] 田亚平[1] 谢卫妮[1] 

机构地区：[1]衡阳师范学院资源环境与旅游管理系,湖南衡阳421002 [2]湖南科技大学建筑与城乡规划学院,湖南湘潭411201

出　　处：《安徽农业科学》2013年第4期1799-1801,1860,共4页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金项目"南方红壤丘陵区土地生态安全研究--以湘南红壤丘陵区为例"(41171076);湖南省科技"资源环境与区域可持续发展"创新团队项目;湖南省人文地理学重点建设学科资助项目

摘　　要：根据湖南省区域环境及土地利用特点,运用P-S-R模型建立湖南省土地资源生态安全评价的指标体系,采用熵权法法计算各指标权重和研究区域的土地资源生态安全值,对其2001～2010年的土地资源生态安全状态进行动态综合评价,划定安全等级。结果表明,湖南省土地资源生态安全压力指数呈减小趋势;2001～2010年湖南省土地资源生态安全状态指数总体为增加趋势,但是在2006～2008年出现小幅度下降;湖南省土地资源生态安全响应指数呈上升趋势;综合安全指数变化表现为增加趋势,但是至2010年仍为临界安全。湖南省土地资源生态安全面临的压力仍较大,区域土地资源状态仍不乐观,在人类的干预和维持下,生态安全受人类的影响逐渐加大。According to regional environment and land use characteristics in Hunan Province, the index system for evaluating ecological secur- ity of land resources was developed based on pressure-state-response model. By means of entropy method to calculate the index weight and are- as of land resources ecology secure value, an dynamic comprehensive evaluation was conducted on land resources ecological safety status dur- ing 2001 -2010, delimit the safety level. The land resources ecological safety pressure index in Hunan Province showed a trend of decrease; land resources ecological security state index in Hunan Province during 2001 -2010 revealed a general trend of increase, but a small range de- crease during 2006 -2008; land resources ecological security response index rising; comprehensive security index change trend for the in- creasing trend, but to 2010 still for critical safety. The pressure of land resources ecological security is still bigger, regional land resource sta- tus is not optimistic. Effects of human intervention and maintain on ecological security increase gradually.

关 键 词：土地资源 生态安全 指标体系 动态评价 湖南省 

分 类 号：S28[农业科学—农业水土工程]