热带地理 ›› 2016, Vol. 36 ›› Issue (2): 296-302.doi: 10.13284/j.cnki.rddl.002821

• 论文 • 上一篇    下一篇

东江流域地表水功能区水质对土地利用的响应

刘旭拢1,2,邓孺孺1,秦 雁1,梁业恒1,熊龙海1   

  1. (1.中山大学 地理科学与规划学院//广东省水环境遥感监测工程技术研究中心//广东省城市化与地理环境空间模拟重点实验室,广州 510275; 2.广州地理研究所//广东省遥感与地理信息系统应用重点实验室,广州 510070)
  • 出版日期:2016-03-31 发布日期:2016-03-31
  • 通讯作者: 邓孺孺(1963―),男,广西来宾人,教授,博士,研究方向为水质遥感与大气环境遥感,(E-mail)eesdrr@mail.sysu.edu.cn。
  • 作者简介:刘旭拢(1978―),女,河南平顶山人,副研究员,研究方向为水环境遥感,(E-mail)lxlong020@126.com
  • 基金资助:

    广东省自然科学基金(S2013010013320);国家科技支撑计划项目(2012BAH32B00);广东省水利科技创新项目(2014-13)

Water Quality Response on Land Use Pattern in the Water Function Area of the Dongjiang River Basin

LIU Xulong1,2,DENG Ruru1,QIN Yan1,LIANG Yeheng1,XIONG Longhai1   

  1. (1.Guangdong Engineering Research Center of Water Environment Remote Sensing//Guangdong Key Laboratory for Urbanization and Geo-simulation//School of Geography and Planning,Sun Yat-sen University,Guangzhou 510275,China;2.Guangzhou Institute of Geography // Key Lab of Guangdong for Utilization of Remote Sensing and Geographical Information System,Guangzhou 510075,China)
  • Online:2016-03-31 Published:2016-03-31

摘要:

以广东省东江流域2013年地表水功能区水质监测数据和Landsat8 OLI遥感影像为数据源,通过遥感信息提取、GIS空间分析和数理统计方法,对不同空间尺度河岸缓冲带土地利用结构与水体中的高锰酸盐指数(CODMn)、氨氮(NH3-N)和总磷(TP)进行相关性分析。结果表明:1)在水功能区中,开发利用区河岸带的城市化程度较高,水质状况相对较差;保护区、保留区、缓冲区河岸带用地类型以耕地和林地为主,水质状况明显优于开发利用区。2)耕地、林地和草地对水质具有正效应,水体和建设用地对水质具有负效应;同时,建设用地对水质影响作用最强,其次是水体和耕地。3)CODMn与耕地、林地、草地、建设用地的相关性远高于NH3-N和TP,3种水质指标与水体相关性都较大。4)耕地和草地与水质在小尺度范围内相关性最为显著;林地和建设用地与水质相关性随河岸缓冲带尺度增大而增大,水体与水质相关性随河岸缓冲带尺度不同呈波动性变化。

关键词: 东江流域, 水功能区, 水质, 土地利用, 响应关系

Abstract:

For exploring the response of water quality of water function area to land use pattern in the Dongjiang River Basin in Guangdong Province, the water quality monitoring data of water function area and Landsat 8 OLI image in 2013 are selected in this study. The water quality monitoring data contains CODMn, NH3-N and TP. The response relationship and correlation coefficient between land use structure in riparian zone and water quality monitoring data are analyzed on different spatial scales by using remote sensing classification, GIS spatial analysis and mathematical analysis methods. The results reveal that water quality is relatively poor in the highly-urbanized area, which is in contrast to the protected areas, reserves and buffer strip. The land use structure of the riparian zone exerts a great impact on water quality parameters in the water function areas. The land use structure of farmland, forest and grassland shows positive effects on water quality. However, the land use structure of water body and construction land has negative effects. CODMn shows a higher correlation with farmland, forest, grassland and construction land than NH3-N and TP. The main sources of the pollutants are industrial wastewater, sewage and atmospheric pollutants subsidence. The increase of urban impervious surface deteriorates the water quality. The cropland and grassland are most relevant to water quality on small riparian zone scale. The correlation coefficient between forest and construction land and water quality increases with the riparian zone scale. The correlation between water body and water quality is significant and fluctuates with the scale of riparian zone.

Key words: the Dongjiang River Basin, water function area, water quality, land use, response relationship