Impact of Landscape Pattern on River Water Quality Based on Different Topographic Relief Areas: A Case Study of Chishui River Basin in Southwest China

The water quality of the basin is affected by many factors. unique geological conditions in karst areas create highly heterogeneous geographical characteristics, which makes relationship between and landscape more complex uncertain. In order to further study how these factors affect typical basin, this takes Chishui River Basin Southwest China as research object, Kruskal-Wallis test, Pearson correlation analysis geographic detector methods were used quantitatively explore difference STR LTR impact on under driven temperature, precipitation, population density per capita GDP. novelty that according topographic geomorphic features Basin, sub-basins with different relief are divided influence surface river topography, meteorology human activities. results show that: (1) area large (LTR) better than small (STR); (2) STR, activities obvious, dry land construction have a significant quality; LTR, forest main factor; (3) interaction indicators while precipitation significant; (4) focus coordinate natural types man-made types; it necessary harness steep slope farmland. Understanding influencing can determine targeted protection measures achieve purpose protecting quality.