摘要
以2018年常州市50个水质监测断面的5个水质指标(NH;-N、COD;、BOD;、TN和TP)为基础数据,利用SPERAMAN、RDA等多种数学统计方法,从不同地形(丘陵和平原)和不同空间尺度的河流滨岸带缓冲区(25、50、200、500和1000 m)探究水质指标对滨岸带土地利用类型的响应,以期为水环境管理提供科学建议。结果显示:(1)丘陵区水质指标对土地利用类型的响应更强。丘陵区在25和200 m缓冲带上土地利用类型对水质指标的解释度较高,而平原区在50 m缓冲带上土地利用类型对水质指标的解释度较高;(2)不同土地利用类型对水质指标的影响不同。林地、园地和水质指标呈显著正相关,耕地、住宅用地和水质呈显著负相关。上述研究表明,在面向水质目标的水环境管理中,丘陵区应注重优化距离滨岸带200 m范围以内的土地利用类型,而平原区至少在距离滨岸带50 m以内要加强对土地利用类型的控制。
This study focuses on 50 water quality monitoring sections in Changzhou in 2018 to explore the response of water quality indexes(NH;-N,COD;,BOD;,TN,and TP)to land use patterns of riparian zone at different terrain(hill and plain)and buffer zones(25,50,200,500 and 1000 m)by using spearman,RDA and other mathematical statistical methods,which in order to provide scientific suggestions for water environment management.The results showed that the response of water quality index to land use pattern in hilly areas was more significant compared with plain area.In the hilly region,the interpretation of land use pattern to water quality index was higher in the buffer zone of 25 and 200 m.But in the plain area,the high degree of interpretation for water quality index is in the 50 m buffer zone.The effects of different land use patterns on water quality index is heterogeneity,like forest land and garden land were significantly positively correlated with water quality,while cultivated land and residential land were significantly negatively correlated with water quality.All above study indicates that when facing water environment management oriented to water quality objectives,land use pattern within 200 m distance from the riparian zone should be optimized in hilly areas,simultaneously,it should be strengthened in plain areas within 50 m distance from the riparian zone at least.
作者
王雪松
李琪
高俊峰
黄佳聪
WANG Xue-song;LI Qi;GAO Jun-feng;HUANG Jia-cong(Jiangsu Hydrology and Water Resources Survey Bureau,Changzhou Branch,Changzhou 213022,China;Key Laboratory of Watershed Geographic Sciences,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China)
出处
《长江流域资源与环境》
CAS
CSSCI
CSCD
北大核心
2021年第12期2915-2924,共10页
Resources and Environment in the Yangtze Basin
基金
美丽中国生态文明建设科技工程专项(XDA23020201)
江苏水利科技项目(2019025,2020042,2020032)。
关键词
滨岸带
土地利用
水质指标
统计分析
常州市
riparian
land use
water quality index
statistic analysis
Changzhou City
