Surface Water Hydrology

Oral Abstract

Response and Thresholds of Water Quality to the Change of Landscape in Catchment

Wednesday, January 4
10:30 AM - 12:30 PM
Location: 7th Meeting Room

With the influence of global climate and human activities, the water environment system becomes fragile, thus the construction of water environment resilience is the inevitable choice to adapt the changing environment and to meet the sustainable development of water resources. In this paper, the impact of landscape pattern change of land use of Huaihe river basin upstream on water environment is analyzed, and thresholds of three landscape pattern index, including the types of landscape patch area ratio (PLAND), edge density (ED), the largest patch area index (LPI), are put forward. The results show the area proportion of various land use types has the greatest impact on water quality, which is suitable for the management of water environment resilience. The area proportion of forestland and grassland, the broken degree of construction land, and the land dominance of cultivated land have significant effect on water environment. By identifying the threshold between landscape pattern and water quality, the threshold-based water environment management can be established and it is of great significance to the sustainability and resilience of water environment.

Xiang Zhang

Wuhan University

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Response and Thresholds of Water Quality to the Change of Landscape in Catchment



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