摘要
从自然环境、社会环境、生物以及调节、支持、供给和社会文化功能7方面,选取19个评价指标,构建渭河湿地评价指标体系;利用文献资料和实地调查数据,评价渭河湿地生态功能。评价结果表明,渭河湿地生态功能的总体评价等级为良好,其生态功能正常,并且还有改善空间;在19个四级评价指标中,湿地面积、人均可支配收入、动物物种丰富度、气温调节、湿度调节、降尘、鸟类物种丰富度、经济鱼类物种丰富度和国家保护物种丰富度9个指标的评价等级为优秀,水域类别、污水处理率、植物物种丰富度、水文调节、CO2固定量、氮去除率、磷去除率和已建成湿地自然保护区8个指标的评价等级为良好;十年内湿地退化率的评价等级为中等,人口密度的评价等级为差;在四级评价指标中,湿地面积的权重最大,说明湿地面积是影响渭河湿地生态功能的最主要因素,水域类别的权重次之。因此,最大限度地保护渭河湿地和开展河流生态修复是维持渭河湿地健康发展的关键。
The ecological functions of the Wei River wetlands were evaluated using the literature data combined with field survey data. Taking the natural environment, social environment, biology, regulation function,support function, supply function, and social cultural function as the starting point, 19 evaluation indexes were selected to construct the evaluation index system of Wei River wetlands. The evaluation results showed that the overall evaluation level of the ecological functions of Wei River wetlands were normal and could be improved;among the 19 four-level evaluation indicators, the evaluation levels of area of the wetlands, per capita disposable income, animal species richness, and temperature regulation, humidity adjustment, dust fall,bird species richness, economic fish species richness and national protected species richness were belonged to excellent level, the evaluation levels of water area category, sewage treatment rate, plant species richness,hydrological regulation, CO2 fixation amount, nitrogen removal rate, phosphorus removal rate and the established wetland nature reserve were belonged to good level;the evaluation level of wetland degradation rate within ten years was medium level, and the evaluation level of population density was poor level;among the four-level evaluation indicators, the weight of wetland area was the largest, indicating that wetland area was the most important factor affecting the ecological functions of Wei River wetlands, and the weight of water area category was the second. Therefore, protecting the Wei River wetlands and carrying out ecological restoration of the Wei River were the key to maintaining the healthy development of the Wei River wetlands.
作者
王毅勇
贺晓尘
丁鹏程
于冰
张金瑕
向一恒
WANG Yiyong;HE Xiaochen;DING Pengcheng;YU Bing;ZHANG Jinxia;XIANG Yiheng(College of Geography and Environment,Baoji University of Arts and Sciences,Baoji 721013,Shaanxi,P.R.China)
出处
《湿地科学》
CSCD
北大核心
2021年第4期399-406,共8页
Wetland Science
基金
陕西省教育厅重点实验室项目(18JS004和20JS010)
陕西省重点研发计划项目(2020SF-385)资助。
关键词
渭河湿地
生态功能
评价
指标体系
层次分析
Wei River wetlands
ecological functions
evaluation
indicator system
analytic hierarchy process
作者简介
王毅勇(1966-),男,甘肃省灵台人,博士,教授,主要从事湿地生态学研究。E-mail:28480016@qq.com。
