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Tier 3 — Observational / field trialPeer-reviewed

Impacts of land use on phosphorus and identification of phosphate sources in groundwater and surface water of karst watersheds

Hao Chen, Zhiwei Han, Xinting Yan, Ziyou Bai, Qinyuan Li, Pan Wu

Journal of Environmental Management · 2024

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Summary

This 2024 study examines how land use patterns affect phosphorus dynamics in karst watersheds, using water quality monitoring and source identification techniques to trace phosphate origins. The research addresses the environmental significance of phosphorus loading in karstic hydrogeology, where rapid groundwater movement and limestone dissolution create distinctive contaminant transport pathways. The findings contribute to understanding agricultural and non-agricultural contributions to phosphorus pollution in sensitive karst aquifer systems.

UK applicability

Karst hydrogeology is not prevalent across most of the United Kingdom, limiting direct applicability; however, the study's methodological approach to land use–nutrient loading relationships may inform phosphorus management in intensive agricultural regions with permeable soils and shallow water tables.

Key measures

Phosphorus and phosphate concentrations in groundwater and surface water; phosphate source attribution; land use classification and spatial analysis

Outcomes reported

The study identified sources of phosphate contamination in groundwater and surface water across karst watersheds and quantified how different land use patterns influence phosphorus distribution. Findings suggest differentiated phosphorus loading from agricultural, urban and natural land uses in karst hydrogeological settings.

Theme
Farming systems, soils & land use
Subject
Soil fertility & nutrient management
Study type
Research
Study design
Field trial
Source type
Peer-reviewed study
Status
Published
Geography
China
System type
Mixed farming
DOI
10.1016/j.jenvman.2024.121919
Catalogue ID
SNmp2b31tl-p1duzo

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