摘要
为了解大汶河水生态环境现状及河岸带土地利用类型对其影响,基于2017年4月大汶河流域水生态调查数据,采用主成分分析和相关分析方法对流域地形、水文、水环境因子、主要水生生物因子和栖息地质量5个方面共19个候选指标进行筛选和优化,构建了大汶河生态系统健康评价多指标体系并用于大汶河水生态健康评价。结果表明:水环境因子和水生生物类型指标在健康评价指标体系中所占权重较大;大汶河水生态系统健康状况评价结果主要以一般和较差为主,分别占总采样点的58.33%和20.83%,仅瀛汶河上段、大汶河南支上段和大汶河干流下段部分断面处于健康或亚健康水平;城镇村及工矿用地、耕地和交通用地与大汶河生态健康综合指数呈负相关,是该流域水生态系统受到破坏的主要因素。
To understand water ecological environment of Dawen River and the influence of land use type along the riparian zone,we conducted a survey on water ecology of Dawen River basin in April 2017. Principal component analysis and correlation analysis were used to screen and optimize a total of 19 candidate indicators in five aspects including watershed topography,hydrology,water environmental factors,major aquatic biological factors,and habitat quality. By analyzing weight coefficient of those indicators,a multi-indicator assessment system for river ecosystem health in the Dawen River basin was constructed. The results showed that water environmental factors and aquatic organisms had a large weight in the health evaluation index system. The health status in the basin was dominated by general and poor grades,accounting for 58. 33% and 20.83% of the total sampling points,respectively. The upper section of Yingwen River and southern tributaries of Dawen River,and the lower section of the main stream of the Dawen River were at excellent or good level. The area of urban village,industrial and mining land,farmland and traffic land were negatively correlated with water ecological health comprehensive index of Dawen River,which were the main factors responsible for the destruction of water ecosystems of the basin.
作者
申祺
魏杰
武玮
申晨晨
王天艺
王丽
SHEN Qi;WEI Jie;WU Wei;SHEN Chen-chen;WANG Tian-yi;WANG Li(Key Laboratory of Hydrobiology in Liaoning Province,Dalian Ocean University,Dalian 116023,Liaoning,China;School of Water Conservancy and Environment,University of Jinan,Jinan 250022,China)
出处
《生态学杂志》
CAS
CSCD
北大核心
2020年第1期224-233,共10页
Chinese Journal of Ecology
基金
山东省省级水利科研与技术推广项目(SDSLKY201602)资助
关键词
大汶河
水生态健康
指标
主成分分析
土地利用
Dawen River
water ecological health
indicator
principal component analysis
land use
