摘要
为了解松花江流域湿地生态系统健康状况,基于"压力—状态—响应"模型,选取流域2008年年降水量、湿润指数、人口密度、单位面积GDP值、距离道路远近、区域归一化植被指数(NDVImax)、区域净初级生产力(NPP)、土壤侵蚀强度、土地利用、国家级自然保护区分布10项指标构建流域湿地生态系统健康评价指标体系,采用加权求和法计算湿地生态系统健康指数,并分析其健康状况。结果表明,从面积大小讲,松花江流域62.62%的湿地生态系统处于健康水平,37.38%的湿地生态系统处于疾病水平;从空间分布特征讲,健康湿地分布广泛,疾病湿地主要分布在工农业生产相对发达、人口较为集中、湿润水平较低、植被覆盖较差的平原区域;从行政区湿地平均健康水平方面讲,流域内66.67%的行政区湿地平均健康程度为较健康,16.67%的行政区湿地平均健康水平分别为疾病及健康。建议针对湿地健康状况开展湿地生态保护与恢复措施。
In order to master the wetland ecosystem health in Songhua River Basin,we built index system to assessment wetland ecosystem health based on the Pressure-State-Response（PSR）model.The index system includes ten indexes which were annual precipitation,moisture index,population density,GDP per area,land-road distance,the maximum of NDVI,NPP,soil erosion intensity,the land-use and area of national nature reserve.Then,we used the weighted sum method to evaluate the index of the ecosystem health in Songhua River basin,and analyzed its health condition.The results showed that 62.62% of the wetland area in Songhua River basin was at the healthy level and 37.38% of the area was at the morbid level.From the aspect of spatial distribution characteristics,the healthy level wetland distributed widely,the morbid level wetland distributed mostly in plain area where industrial and agricultural production were more developed,population WAS denser,wetness was higher and vegetation coverage was lower.From the aspect of administrative division,66.67%of cities′wetland were at the less healthy level,16.67% of cities′wetland were at the morbid level or health level.We advised to take some protection and restoration actions with respect to wetland health in this area.
出处
《水土保持研究》
CSCD
北大核心
2015年第1期105-109,114,共6页
Research of Soil and Water Conservation
基金
水专项子课题"松花江流域湿地生态系统保护及恢复技术方案研究"(2009ZX07207-001-04)
