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[1]QI Lanlan,WANG Jinliang,YE Hui,et al.Study on the Land Use Landscape Pattern and Water Quality Change in the ‘Three Lakes' Basin in Central Yunnan[J].Research of Soil and Water Conservation,2021,28(06):199-208.

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Study on the Land Use Landscape Pattern and Water Quality Change in the ‘Three Lakes' Basin in Central Yunnan

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 28 Number of periods: 2021 06 Page number: 199-208 Column: Public date: 2021-10-10

Title:: Study on the Land Use Landscape Pattern and Water Quality Change in the ‘Three Lakes' Basin in Central Yunnan

Author(s):: QI Lanlan^1,2,3，WANG Jinliang^1,2,3，YE Hui^1,2,3，ZHU Hong^1,2,3; (1.Faculty of Tourism and Geographic Sciences，Yunnan Normal University，Kunming 650500，China; 2.Key Laboratory of Resources and Environmental Remote Sensing for Universities in Yunnan，Kunming 650500，China; 3.Center for Geospatial Information Engineering and Technology of Yunnan Province，Kunming 650500，China)

Keywords:: land use; landscape pattern; lake basin; water quality; correlation analysis

CLC:: X52; X144

DOI:: -

Abstract:: To investigate the effects of land use and landscape pattern evolution on water quality in the Lake Basin of Central Yunnan，Fuxian Lake，Xingyun Lake and Qilu Lake basins(hereinafter referred to as the Sanhu Basin)with similar geographical locations and great differences in water quality were selected as the study areas. Landscape pattern index method，Pearson correlation analysis and redundancy analysis were used to reveal the effect of land use/landscape pattern on water quality in the Three Lake Basin. The results show that:(1)in 1990—2018，the arable land in the Three Lakes Basin decreased，the construction land increased，the other land use types changed little; patch density(PD)，landscape shape index(LSI)，and landscape diversity(SHDI)all increased，and the landscape pattern of the Three Lakes Basin tended to be complex;(2)Arable land and construction land were the important land use types that affected the water quality of Fuxian Lake and Qilu Lake; the woodland area ratio in the Xingyun Lake Basin had a higher degree of negative correlation with water quality indicators，which had a slightly stronger impact on water quality;(3)SHDI and LSI of Fuxian Lake Basin were significantly positively correlated with the CODMn of the lake water body，PD，LSI and the lake water CODMn of Qilu Lake Basin were extremely significantly positively correlated，and the patch combination degree(COHESION)was extremely significantly negatively correlated with the lake water BOD₅; SHDI，LSI and COHESION，PD，LSI could be used as the key factors for predicting water quality changes on the landscape scale of Fuxian Lake and Qilu Lake basin，respectively; the contagion index(CONTAG)of the Xingyun Lake Basin was significantly positively correlated with the CODMn，TP and TN of the lake water body; CONTAG could be used as an effective predictor of water quality changes in Xingyun Lake.

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Last Update: 2021-10-10