Water Quality Characteristics and Source Analysis of Pollutants in the Maotiao River Basin (SW China)
Rivers are an important mediator between human activities and the natural environment. They provide multiple functions, including irrigation, transportation, food supply, recreation, and water supply. Therefore, evaluations of water quality and pollution sources are of great significance for ecologi...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-01-01
|
| Series: | Water |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4441/14/3/301 |
| _version_ | 1797484045207076864 |
|---|---|
| author | Yinjiu Li Qiuhua Li Shulin Jiao Chen Liu Liuying Yang Guojia Huang Si Zhou Mengshu Han Anton Brancelj |
| author_facet | Yinjiu Li Qiuhua Li Shulin Jiao Chen Liu Liuying Yang Guojia Huang Si Zhou Mengshu Han Anton Brancelj |
| author_sort | Yinjiu Li |
| collection | DOAJ |
| description | Rivers are an important mediator between human activities and the natural environment. They provide multiple functions, including irrigation, transportation, food supply, recreation, and water supply. Therefore, evaluations of water quality and pollution sources are of great significance for ecological restoration and management of rivers. In this study, the improved “vušekriterijumska optimizacija i kompromisno rješenje” (VIKOR in Serbian; in English: Multicriteria Optimization and Compromise Solution), and a geodetector were used to analyze the water quality characteristics and pollution sources of the Maotiao River Basin (Gizhou province, SW China). The results showed that the water quality of the Maotiao River Basin deteriorated significantly during the summer drought period, as was evident in the reservoirs and lakes. It improved in the wet season (i.e., during the summer period) due to runoff dilution. Water quality decreased along the river’s course, from upstream to downstream sections. The results of the geographic detector analysis showed that agricultural areas were the primary factor affecting the spatial distribution of water quality in the river basin. In July, August, and November 2020, the influence of agricultural land was 0.72, 0.60, or 0.80, respectively, and the interactions among urban, industrial, agricultural, and forested areas explained 99.2%, 83.2%, or 99.9% of the spatial differentiation of water quality, respectively. Due to the influence of spatial scale, settlements have a small influence on the spatial distribution of water quality. Their impact factors were 0.38, −0.24, and −0.05, respectively. Notably, the negative relationship of water quality and forested areas reflects that topography, types of landscapes, and soil thickness have considerable influences on the Maotiao River Basin’s water quality. Based on the findings, we infer that good farmland water conservancy projects and comprehensive management of different types of landscapes, such as forests, agriculture, and urban area and water bodies, are of great significance for improving water quality. |
| first_indexed | 2024-03-09T22:56:48Z |
| format | Article |
| id | doaj.art-15f53f2b568d40bfa1241f6b54eb4021 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T22:56:48Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-15f53f2b568d40bfa1241f6b54eb40212023-11-23T18:09:21ZengMDPI AGWater2073-44412022-01-0114330110.3390/w14030301Water Quality Characteristics and Source Analysis of Pollutants in the Maotiao River Basin (SW China)Yinjiu Li0Qiuhua Li1Shulin Jiao2Chen Liu3Liuying Yang4Guojia Huang5Si Zhou6Mengshu Han7Anton Brancelj8Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang 550001, ChinaKey Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang 550001, ChinaSchool of Geography and Environmental Science, Guizhou Normal University, Guiyang 550025, ChinaKey Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang 550001, ChinaSchool of Geography and Environmental Science, Guizhou Normal University, Guiyang 550025, ChinaSchool of Environment and Biological Engineering, Guiyang University, Guiyang 550005, ChinaDepartment of Aquatic Ecological and Environmental Research, Provincial Environmental Science Research and Design Institute, Guiyang 550002, ChinaGuizhou International Science & Technology Cooperation Base-International Joint Research Centre for Aquatic Ecology, Guizhou Normal University, Guiyang 550001, ChinaGuizhou International Science & Technology Cooperation Base-International Joint Research Centre for Aquatic Ecology, Guizhou Normal University, Guiyang 550001, ChinaRivers are an important mediator between human activities and the natural environment. They provide multiple functions, including irrigation, transportation, food supply, recreation, and water supply. Therefore, evaluations of water quality and pollution sources are of great significance for ecological restoration and management of rivers. In this study, the improved “vušekriterijumska optimizacija i kompromisno rješenje” (VIKOR in Serbian; in English: Multicriteria Optimization and Compromise Solution), and a geodetector were used to analyze the water quality characteristics and pollution sources of the Maotiao River Basin (Gizhou province, SW China). The results showed that the water quality of the Maotiao River Basin deteriorated significantly during the summer drought period, as was evident in the reservoirs and lakes. It improved in the wet season (i.e., during the summer period) due to runoff dilution. Water quality decreased along the river’s course, from upstream to downstream sections. The results of the geographic detector analysis showed that agricultural areas were the primary factor affecting the spatial distribution of water quality in the river basin. In July, August, and November 2020, the influence of agricultural land was 0.72, 0.60, or 0.80, respectively, and the interactions among urban, industrial, agricultural, and forested areas explained 99.2%, 83.2%, or 99.9% of the spatial differentiation of water quality, respectively. Due to the influence of spatial scale, settlements have a small influence on the spatial distribution of water quality. Their impact factors were 0.38, −0.24, and −0.05, respectively. Notably, the negative relationship of water quality and forested areas reflects that topography, types of landscapes, and soil thickness have considerable influences on the Maotiao River Basin’s water quality. Based on the findings, we infer that good farmland water conservancy projects and comprehensive management of different types of landscapes, such as forests, agriculture, and urban area and water bodies, are of great significance for improving water quality.https://www.mdpi.com/2073-4441/14/3/301water qualitysource analysisimproved multicriteria optimization and compromise solutiongeodetectors |
| spellingShingle | Yinjiu Li Qiuhua Li Shulin Jiao Chen Liu Liuying Yang Guojia Huang Si Zhou Mengshu Han Anton Brancelj Water Quality Characteristics and Source Analysis of Pollutants in the Maotiao River Basin (SW China) Water water quality source analysis improved multicriteria optimization and compromise solution geodetectors |
| title | Water Quality Characteristics and Source Analysis of Pollutants in the Maotiao River Basin (SW China) |
| title_full | Water Quality Characteristics and Source Analysis of Pollutants in the Maotiao River Basin (SW China) |
| title_fullStr | Water Quality Characteristics and Source Analysis of Pollutants in the Maotiao River Basin (SW China) |
| title_full_unstemmed | Water Quality Characteristics and Source Analysis of Pollutants in the Maotiao River Basin (SW China) |
| title_short | Water Quality Characteristics and Source Analysis of Pollutants in the Maotiao River Basin (SW China) |
| title_sort | water quality characteristics and source analysis of pollutants in the maotiao river basin sw china |
| topic | water quality source analysis improved multicriteria optimization and compromise solution geodetectors |
| url | https://www.mdpi.com/2073-4441/14/3/301 |
| work_keys_str_mv | AT yinjiuli waterqualitycharacteristicsandsourceanalysisofpollutantsinthemaotiaoriverbasinswchina AT qiuhuali waterqualitycharacteristicsandsourceanalysisofpollutantsinthemaotiaoriverbasinswchina AT shulinjiao waterqualitycharacteristicsandsourceanalysisofpollutantsinthemaotiaoriverbasinswchina AT chenliu waterqualitycharacteristicsandsourceanalysisofpollutantsinthemaotiaoriverbasinswchina AT liuyingyang waterqualitycharacteristicsandsourceanalysisofpollutantsinthemaotiaoriverbasinswchina AT guojiahuang waterqualitycharacteristicsandsourceanalysisofpollutantsinthemaotiaoriverbasinswchina AT sizhou waterqualitycharacteristicsandsourceanalysisofpollutantsinthemaotiaoriverbasinswchina AT mengshuhan waterqualitycharacteristicsandsourceanalysisofpollutantsinthemaotiaoriverbasinswchina AT antonbrancelj waterqualitycharacteristicsandsourceanalysisofpollutantsinthemaotiaoriverbasinswchina |