Spatial and temporal distribution characteristics of nitrogen/phosphorus nutrients in the Yongjiang River Basin and its relationship with land use types
In order to comprehensively and specifically study the influence of land use types on nitrogen/phosphorus nutrients in the Yongjiang River Basin,spatial and temporal distribution characteristics were analyzed in different water periods,and the relationship between land use type area percentage and nitrogen/phosphorus nutrients was studied.Results showed as follows:(1)the level of nitrogen pollution in the Yongjiang River Basin was higher,and the level of phosphorus pollution was lower.The concentration of nitrogen in dry season was higher than that in wet season.The concentration of phosphorus in wet season was higher than that in dry season.(2)Construction land area percentage was positively correlated with dissolved total nitrogen and total phosphorus,while forest land area percentage was negatively correlated with dissolved total nitrogen,nitrate nitrogen and total phosphorus.(3)According to different land use type area percentages in different reaches,the main stream of Yongjiang River and Yaojiang River should increase green areas and strengthen control of point source discharge in construction land,and Fenghua River should focus on"forest land+"mode and reduce fertilizer and pesticide.
Yongjiang River Basinnitrogen/phosphorus nutrientsland use typesspatial and temporal characteristics
万方数据
维普
