Impact of landscape patterns on different types of phosphorus in Cuyahoga Watershed, Ohio

Authors: Man Qi*, , Xi Chen, University of Cincinnati
Topics: Water Resources and Hydrology, Water Resources and Hydrology, Water Resources and Hydrology
Keywords: landscape ecology, spatial configuration, phosphorus, hydrology
Session Type: Paper
Day: 4/4/2019
Start / End Time: 8:00 AM / 9:40 AM
Room: Empire Room, Omni, West
Presentation File: No File Uploaded

The configuration of landscape plays an important role in determining the ecological processes such as energy flows, hydrological processes and nutrient cycles. This study examined how the spatial configurations of the forest, agriculture, water and urban land use at both landscape and class level, are related to total phosphorus, organic phosphorus and mineral phosphorus in Cuyahoga Watershed. The results indicated that the LPI of the forest, IJI of urban and agriculture are positively correlated with total phosphorus and organic phosphorus while AI of agriculture is negatively correlated with total phosphorus and organic phosphorus. The LPI of forest and IJI of urban also have a positive impact on mineral phosphorus, while the IJI of water is negatively related to mineral phosphorus. Compared to the composition of land use, the configuration indices of land use may have a greater influence on phosphorus. Besides, landscape metrics at class level seems to have a great influence on phosphorus than metrics at landscape scale. This study can provide useful information to land use planners and water quality management authorities. Future studies can further examine the impact of the specific characteristic of landscape patterns such as aggregation, fragmentation using spatial modeling to better understand the complex nature of relationships between land use and water quality.

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