检索结果-南通市图书馆

2007中国科协年会

作者： Zheag Binghui Zhang Yuan Liu Yan Chinese Research Academy of Environmental Sciences,water environmental institute,Beijing 100012

The status of 2246 urban drinking water source areas in China from 661 cities was investigated,and the results show that the water quantity supply from these source water areas is about 495.73 hundred million m,serving 6.52 hundred million *** is indicated by water quality investigation that,in China,there are 1809 centralized drinking water source areas(80.54% of the total amount)which water quality can meet water quality *** differences of pollution characteristic are obvious among different types of drinking water source area,such as river-type drinking water source area,lake-typo drinking water source area and groundwater-type drinking water source *** main reasons for causing the environmental insecurity of drinking water source areas include the insufficient control of watershed and regional contamination,the ineffective management of pollution sources in source water protection areas,the potential threats of agricultural non-point sources,unrensonable way for delinenting source water protection areas,non-perfection of legal regime,and the relative weakness of environmental regulation ability, *** on above analysis,the environmental protecting measures for drinking water sources are baing put forward as well.

关键词： drinking water source areas Environmental problems Protection measures

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Riparian habitat quality as an indicator of land use/land cover effects on riverine water quality

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Geography and Sustainability 2024年第1期5卷 135-143页

作者： Shijie Gu Siyue Li School of Environmental Ecology and Biological Engineering Key Laboratory for Green Chemical Process of Ministry of EducationHubei Key Laboratory of Novel Reactor and Green Chemical TechnologyWuhan Institute of TechnologyWuhan 430205China

Riparian land use/land cover(LULC)plays a crucial role in maintaining riverine water quality by altering the transport of pollutants and ***,establishing a direct relationship between water quality and LULC is challenging due to the multi-indicator nature of both *** quality encompasses a multitude of physical,chemical,and biological parameters,while LULC represents a diverse array of land use *** habitat quality(RHQ)serves as an indicator of ***,it remains to be seen whether RHQ can act as a proxy of LULC for assessing the impact of LULC on riverine water *** study examines the interplay between RHQ,LULC and water quality,and develops a comprehensive indicator to predict water *** measured several water quality parameters,including pH(potential of hydrogen),TN(total nitrogen),TP(total phosphorus),T_(water)(water temperature),DO(dissolved oxygen),and EC(electrical conductivity)of the Yue and Jinshui Rivers draining to the Han River during 2016,2017 and *** water quality index(WQI)was further *** is assessed by the InVEST(Integrated Valuation of Ecosystem Services and Tradeoffs)*** study found noticeable seasonal differences in water quality,with a higher WQI observed in the dry *** RHQ was strongly correlated with LULC *** positively correlated with WQI,and DO concentration and vegetation land were negatively correlated with T_(water),TN,TP,EC,cropland,and construction *** correlations were stronger in the rainy ***-dominated land,such as construction land and cropland,significantly contributed to water quality degradation,whereas vegetation promoted water *** models showed that the RHQ explained variations in WQI better than LULC *** study concludes that RHQ is a new and comprehensive indicator for predicting the dynamics of riverine water quality.

关键词： water quality index Land use/land cover Riparian habitat quality drinking water source areas

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