Effects of landscape pattern on water quality at multi-spatial scales in the Liuxi River

PDF HTML?? XML?? ???? ???? ???????????????????? DOI: 10.5846/stxb202204110949 ??: ????: ????: ????: ?????: ????: ???????????41907179?41961144027?42005126?????????????????752013? Effects of landscape pattern on water quality at multi-spatial scales in the Liuxi River Author: Affiliation: Fund Project: ?? | ?/? ???? ???? ???? ???? ???? ???? ??:?????????????????????????2020?6??2021?1???????15???????????????????????pH????????????????????????????????????????????????????????????????????Bioenv???Mantle??????????????????????????????????????????????????????????????????????????????????100 m?????????????????????????????????????????????????????????????????PD???????????????????????????????????????CONTAG???????????SHDI??????????????????????????????????????????????????????1000 m?????????????????????1000 m???????????????????????????????????????? Abstract:To explore impacts scales, samples were taken from 15 sampling sites main stream June 2020 and January 2021, respectively. The indicators such as temperature, dissolved oxygen, pH, ammonia nitrogen, nitrate, sulfate chloride determined. We then extracted indices different spatial (sub-basins riparian buffer zones) based interpretating Landsat remote sensing image data. Methods Bioenv analysis, Mantle test, Variance partitioning Hierarchical theory applied to reveal influence mechanism quality. results showed that nitrogen was pollutant River. land use structure characteristics change had scale effects. Water built-up contributor 100 m zone other In sub-basins, patch density forest which affected quality, while connectivity richness diversity key features affecting zones. Overall, interaction between played a leading role driving River, especially 1000 zone, highest contribution Therefore, strengthening management avoiding large area-development are great significant protection basin.