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引用本文:吕志强,庆旭瑶,任玉芬,王效科,庞容.山地城市河流土地利用结构对水质的影响--以重庆市为例.湖泊科学,2016,28(2):319-327. DOI:10.18307/2016.0211
LV Zhiqiang,QING Xuyao,REN Yufen,WANG Xiaoke,PANG Rong.Effects of land use pattern on water quality in mountainous city-a case study of Chongqing City. J. Lake Sci.2016,28(2):319-327. DOI:10.18307/2016.0211
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山地城市河流土地利用结构对水质的影响--以重庆市为例
吕志强1, 庆旭瑶1,2, 任玉芬2, 王效科2, 庞容1
1.重庆工商大学旅游与国土资源学院, 重庆 400067;2.中国科学院生态环境研究中心城市与区域生态国家重点实验室, 北京 100085
摘要:
以重庆主城区6条次级河流为研究区域,运用遥感和地理信息系统计算研究区土地利用构成,借助相关性分析和冗余分析等数理统计手段,分析监测断面汇水区内不同尺度土地利用结构与水质指标间的相关关系.结果表明:研究区土地利用结构以建设用地和林地为主,未利用地和农业用地所占面积比例较少;研究区土地利用结构对各水质指标有重要影响,其中建设用地和农业用地对河流水质恶化具有明显的作用,河流沿岸林地布局能显著改善水质,但随着雨季的到来林地将成为硝态氮的来源.冗余分析进一步证实土地利用类型对水环境有一定影响.研究成果对重庆市河流水环境管理具有重要的实际指导意义,并可为山地城市河流水环境研究提供借鉴.
关键词:  土地利用  河流水质  地理信息系统  冗余分析  重庆市
DOI:10.18307/2016.0211
分类号:
基金项目:国家水体污染控制与治理科技重大专项(2012ZX07307-002)、国家自然科学基金重点项目(41030744,41230633)、重庆市社会科学规划培育项目(2014PY63)、国家自然科学基金项目(41101155,41301351)、重庆市教委科技项目(KJ1400623)、教育部人文社科项目(12XJCZH005)、重庆市高等学校青年骨干教师资助计划(2011)和重庆工商大学研究生"创新型科研项目"(yiscxx2015-41-23)联合资助.
Effects of land use pattern on water quality in mountainous city-a case study of Chongqing City
LV Zhiqiang1, QING Xuyao1,2, REN Yufen2, WANG Xiaoke2, PANG Rong1
1.Department of Land Resource Management, Chongqing Technology and Business University, Chongqing 400067, P. R. China;2.State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P. R. China
Abstract:
The main area of this study focused on the six secondary river districts of Chongqing City.The study utilizes the remote sensing and GIS to calculate the area of study's land use structures, as well as analyzing the relationship between the land use and the water quality indications at different levels in the section of the catchment area based on several statistical analysis methods such as correlation analysis and redundancy analysis (RDA).The result shows that construction and forest land use occupied the most proportions of the studied area while unused land and agricultural land occupied a relatively small percentage; the land use pattern played an important role on the water quality in the area of study, while the construction and the agricultural land use had a great impact on the deterioration of water quality, the strategic layout of forest land use along the river banks can improve water quality significantly under normal circumstances, but would be the root cause of nitrate nitrogen in the upcoming rainy season.The RDA analysis further confirmed the fact that different land use patterns had certain influence on the water quality.This study had set an important and practical guideline for the river water environmental management of Chongqing City, and at the same time, provided an useful reference on the study of river water environment in hilly cities.
Key words:  Land use  river water quality  GIS  redundancy analysis  Chongqing City
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