干旱区生态环境知识资源中心(Arid): 基于PSR模型的广西石漠化地区土地生态安全动态评价

Arid

	基于PSR模型的广西石漠化地区土地生态安全动态评价
其他题名	Dynamic Evaluation of Land Ecological Security in Rocky Desertification Mountainous Area of Guangxi Zhuang Autonomous Region
	谢玲 1; 严土强 2; 高一薄 3
来源期刊	水土保持通报
ISSN	1000-288X
出版年	2018
卷号	38 期号:6 页码:315-321
中文摘要	[目的]对广西壮族自治区轻度及以上石漠化地区进行土地生态安全评价,为该区土地生态安全及其可持续发展提供科学参考。[方法]基于PSR模型构建了广西石漠化地区土地生态安全评价指标体系,采用熵权赋权法确定权重,运用生态安全综合模型,对研究区2005,2015年的土地生态安全综合指数进行计算。[结果]广西石漠化地区土地生态安全主导因素为人口密度、单位GDP综合耗能、土地垦殖率、耕地粮食单产、城市化水平、人口自然增长率等因素;压力指数、状态指数和响应指数共同决定广西石漠化地区土地生态安全评价的综合指数;从时间上看,20052015年广西石漠化地区土地生态安全经历了从临界安全等级向较安全等级的变化趋势,土地生态安全的状况主要因响应状态系统的提升,而使得综合土地生态安全指数有所上升。从空间上看,2005年贵港地区的土地生态安全等级处于不安全级,2015年南宁、贵港、来宾等地区的土地生态安全等级处于较不安全级。[结论]广西石漠化地区的土地生态安全略有上升,但受压力和状态子系统承载力水平的限制,研究区的土地生态安全仍处于中等水平,需要进一步加强土地生态安全建设。
英文摘要	[Objective] The status of land ecological security development in the light-to-severe rocky desertification mountainous area of Guangxi Zhuang Autonomous Region was studied in order to provide scientific reference for land ecological security and its sustainable development in study area. [Methods] Based on PSR model, and from three aspects including pressure, state and response, this paper constructed a land ecological security early-warning index system for the light-to-severe rocky desertification mountainous area of Guangxi Zhuang Autonomous Region. The entropy weight method and the integrated model of ecological security were used to calculat the comprehensive index of land ecological in 2005 and 2015 in study area. [Results] The main affecting factors of land ecological security in the rocky desertification mountainous area of Guangxi Zhuang Autonomous Region were the population density, the integrated energy consumption per unit of GDP, the land cultivation rate, the per unit area yied of grain, the urbanization level, the natural population growth rate. Pressure index, state index and response index jointly determined the comprehensive index of land ecological security evaluation in the rocky desertification mountainous area. With respect to time differentiation, from 2005 to 2015, the land ecological security in the rocky desertification mountainous area had changed from critical level to mainly relatively safe level over the past 10 years, the situation of land ecological security was mainly due to the improvement of the response state system, which made the comprehensive land ecological security index increased. With respect to spatial differentiation, the land ecological security was the lowest in 2005,and the level of land ecological security was at a relatively unsafe level in Nanning,Guigang, Laibin areas in 2015. [Conclusions] Although the land ecological security in the rocky desertification mountainous area of Guangxi Zhuang Autonomous Region raised slightly, limited by the level of carrying capacity of pressure and state subsystem, the land ecological security of the study area is still at an intermediate level, the construction of land ecological security needs to be further strengthened.
中文关键词	PSR模型 ; 土地生态安全 ; 石漠化地区 ; 广西壮族自治区
英文关键词	PSR model land ecological security the rocky desertification mountainous area Guangxi Zhuang Autonomous Region
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURAL ECONOMICS POLICY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6407495
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238295
作者单位	1.广西师范大学环境与资环学院;;广西师范大学;;新疆大学资源与环境科学学院, ;;岩溶生态与环境变化研究广西高校重点实验室;;, 桂林;;桂林;;乌鲁木齐, 广西;;广西;;新疆 541004;;541004;;830046, 中国; 2.广西师范大学环境与资环学院, 桂林, 广西 541004, 中国; 3.新疆大学资源与环境科学学院, 乌鲁木齐, 新疆 830046, 中国
推荐引用方式 GB/T 7714	谢玲,严土强,高一薄. 基于PSR模型的广西石漠化地区土地生态安全动态评价[J]. 新疆大学,2018,38(6):315-321.
APA	谢玲,严土强,&高一薄.(2018).基于PSR模型的广西石漠化地区土地生态安全动态评价.水土保持通报,38(6),315-321.
MLA	谢玲,et al."基于PSR模型的广西石漠化地区土地生态安全动态评价".水土保持通报 38.6(2018):315-321.