Water quality in relation to land use in the Junshan Lake watershed and water quality predictions

Changes in human-dominated spatial patterns of land use are the main driving factors of water quality evolution in watersheds, and the quantitative impact of land use changes on water quality is currently a focus of lake ecology research. Using the Junshan Lake Basin as a study area, this paper quan...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jiangang Lu, Haisheng Cai, Xueling Zhang, Yanmei Fu
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	junshan lake basin land use socio-economic factors water quality Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/325eb467d7a94c8ab5a59455493add37
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:325eb467d7a94c8ab5a59455493add37
record_format	dspace
spelling	oai:doaj.org-article:325eb467d7a94c8ab5a59455493add372021-11-23T18:56:13ZWater quality in relation to land use in the Junshan Lake watershed and water quality predictions1606-97491607-079810.2166/ws.2021.123https://doaj.org/article/325eb467d7a94c8ab5a59455493add372021-11-01T00:00:00Zhttp://ws.iwaponline.com/content/21/7/3602https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798Changes in human-dominated spatial patterns of land use are the main driving factors of water quality evolution in watersheds, and the quantitative impact of land use changes on water quality is currently a focus of lake ecology research. Using the Junshan Lake Basin as a study area, this paper quantitatively analyzes the response relationships between the water quality parameters, land use, and socio-economic factors in the study area from 2005 to 2019 and predicts the water quality in 2035 based on land and space planning scenarios. The results show the following. (1) The land use structure of the Junshan Lake Basin has changed significantly over the last 15 years. The basic trend is an increase in settlement and wetland areas in the basin and a decrease in water, cropland, forest, and grassland areas. (2) Settlement areas play the role of a ‘source’ for the total phosphorus (TP) and ammonium-nitrogen (NH3-N) pollution load, and cropland areas play the role of a ‘sink’ for the TP, NH3-N, and chemical oxygen demand (CODMn) pollution load. (3) The main land use type in the Junshan Lake Basin is cropland, which accounts for more than 40% of the total, and the water quality in the lake is affected not only by non-point source pollution but also by the regional Gross Domestic Product (GDP), total population, and per capita disposable income. According to the water quality prediction and analysis, the concentrations of TN and TP in Junshan Lake will meet the Class IV water quality standard in 2035, and the concentrations of dissolved oxygen (DO) and CODMn will meet the Class II standard. This study is significant for the management and control of the water environment in the Junshan Lake Basin. HIGHLIGHTS Quantitatively analyzes the response relationships between the water quality parameters, land use, and socio-economic factors in the study area.; Reveals the relationship between the ‘source’ or ‘sink’ of the impact of construction land and cropland in the study area on water quality.; According to the quantitative expression obtained in this paper, the water quality of the study area in 2035 is predicted.;Jiangang LuHaisheng CaiXueling ZhangYanmei FuIWA Publishingarticlejunshan lake basinland usesocio-economic factorswater qualityWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 7, Pp 3602-3613 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	junshan lake basin land use socio-economic factors water quality Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	junshan lake basin land use socio-economic factors water quality Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Jiangang Lu Haisheng Cai Xueling Zhang Yanmei Fu Water quality in relation to land use in the Junshan Lake watershed and water quality predictions
description	Changes in human-dominated spatial patterns of land use are the main driving factors of water quality evolution in watersheds, and the quantitative impact of land use changes on water quality is currently a focus of lake ecology research. Using the Junshan Lake Basin as a study area, this paper quantitatively analyzes the response relationships between the water quality parameters, land use, and socio-economic factors in the study area from 2005 to 2019 and predicts the water quality in 2035 based on land and space planning scenarios. The results show the following. (1) The land use structure of the Junshan Lake Basin has changed significantly over the last 15 years. The basic trend is an increase in settlement and wetland areas in the basin and a decrease in water, cropland, forest, and grassland areas. (2) Settlement areas play the role of a ‘source’ for the total phosphorus (TP) and ammonium-nitrogen (NH3-N) pollution load, and cropland areas play the role of a ‘sink’ for the TP, NH3-N, and chemical oxygen demand (CODMn) pollution load. (3) The main land use type in the Junshan Lake Basin is cropland, which accounts for more than 40% of the total, and the water quality in the lake is affected not only by non-point source pollution but also by the regional Gross Domestic Product (GDP), total population, and per capita disposable income. According to the water quality prediction and analysis, the concentrations of TN and TP in Junshan Lake will meet the Class IV water quality standard in 2035, and the concentrations of dissolved oxygen (DO) and CODMn will meet the Class II standard. This study is significant for the management and control of the water environment in the Junshan Lake Basin. HIGHLIGHTS Quantitatively analyzes the response relationships between the water quality parameters, land use, and socio-economic factors in the study area.; Reveals the relationship between the ‘source’ or ‘sink’ of the impact of construction land and cropland in the study area on water quality.; According to the quantitative expression obtained in this paper, the water quality of the study area in 2035 is predicted.;
format	article
author	Jiangang Lu Haisheng Cai Xueling Zhang Yanmei Fu
author_facet	Jiangang Lu Haisheng Cai Xueling Zhang Yanmei Fu
author_sort	Jiangang Lu
title	Water quality in relation to land use in the Junshan Lake watershed and water quality predictions
title_short	Water quality in relation to land use in the Junshan Lake watershed and water quality predictions
title_full	Water quality in relation to land use in the Junshan Lake watershed and water quality predictions
title_fullStr	Water quality in relation to land use in the Junshan Lake watershed and water quality predictions
title_full_unstemmed	Water quality in relation to land use in the Junshan Lake watershed and water quality predictions
title_sort	water quality in relation to land use in the junshan lake watershed and water quality predictions
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/325eb467d7a94c8ab5a59455493add37
work_keys_str_mv	AT jianganglu waterqualityinrelationtolanduseinthejunshanlakewatershedandwaterqualitypredictions AT haishengcai waterqualityinrelationtolanduseinthejunshanlakewatershedandwaterqualitypredictions AT xuelingzhang waterqualityinrelationtolanduseinthejunshanlakewatershedandwaterqualitypredictions AT yanmeifu waterqualityinrelationtolanduseinthejunshanlakewatershedandwaterqualitypredictions
_version_	1718416143364915200

Water quality in relation to land use in the Junshan Lake watershed and water quality predictions

Ejemplares similares