摘要
选取青海省各县域海拔、年均气温、年均降水量、相对湿度、风速和相对气压等做为评价自然环境的指标,选取各县域乡村人口比例、医院卫生所数、医生人数、中学生人数比例、农村居民人均纯收入、年末单位从业人口比例、自来水收益村比例、第二产业比例、农村恩格尔系数等做为评价社会人文因素指标;利用AHP层次分析法,分别计算自然压力指数、社会人文环境指数、环境健康风险指数及环境健康风险等级,结果表明:省会西宁市环境健康风险最低,分布在河湟谷地的12个县域,自然压力较小,社会人文环境发展较好,环境健康风险中等;柴达木盆地的大部分和青南高原自然条件相对较好的玉树等15个县域,环境健康风险较高;而青南高原大部分和柴达木的冷湖等11个县域,自然压力大,社会人文环境发展水平低,环境健康风险最大。
6 indicators coming from all counties of Qinghai Province were selected to evaluate the natural environment,including altitude,mean annual temperature,annual precipitation,relative humidity,wind speed and relative air pressure.9 indicators were selected for evaluating the social and human environment,including rural population,the number of hospital clinics,the number of doctors,the proportion of secondary school students,net income per capita of rural residents,the proportion of the employed population at the end of units,the proportion of water revenue village,the proportion of secondary industry,rural engel coefficient.Using AHP method,the natural pressure index,social environment index,environmental health,environmental health risk index and the level of risk were calculated.The results show that the environment health risk of Xining city is at the lowest level.The counties that distribute in eastern of Qinghai Province are of moderate environmental health risks.Other areas are of high environmental health risks,because of highly natural pressure and low level of human social development.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2011年第11期29-33,共5页
Journal of Arid Land Resources and Environment
基金
青海师范大学科技创新项目资助
