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CHEN Tida, CUI Dan, YUAN Yuxin, LIU Jiamin, HUANG Minsheng, Li Ying. Changes in water quality and land use structure in the green-belt area around Shanghai[J]. Journal of East China Normal University (Natural Sciences), 2021, (4): 81-89. doi: 10.3969/j.issn.1000-5641.2021.04.010
Citation: CHEN Tida, CUI Dan, YUAN Yuxin, LIU Jiamin, HUANG Minsheng, Li Ying. Changes in water quality and land use structure in the green-belt area around Shanghai[J]. Journal of East China Normal University (Natural Sciences), 2021, (4): 81-89. doi: 10.3969/j.issn.1000-5641.2021.04.010

Changes in water quality and land use structure in the green-belt area around Shanghai

doi: 10.3969/j.issn.1000-5641.2021.04.010
  • Received Date: 2020-12-21
  • Publish Date: 2021-07-25
  • In this paper, we study land use change and its effects on water quality for 30 water bodies in the green-belt area of Shanghai; the analysis is based on the Markov transfer matrix and Pearson correlation analysis of field data and interpreted land use types. The results show that: the water quality is dominated by Grade Ⅳ and lower Grade Ⅴ; the proportion of water bodies with lower Grade Ⅴ is decreasing year by year; the buffer zone is dominated by construction land, forest, and grassland, with a total proportion of about 84.37%; the increase in construction land and decrease in bare land, accounted for 48.95% of the total reduced area and 50.85% of the total increased area, respectively; on the 300 m buffer scale, grassland had a positive effect on DO and Chla; on the 500 m scale, bare land was the main factor for CODMn deterioration; and cultivated land was positively correlated with multiple pollution indicators at two scales.
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