The Influence of Permanent Grasslands on Nitrate Nitrogen Loads in Modelling Approach

Journal of Water and Land Development

Maria ?mietankaCorresponding authorInstitute of Technology and Life Sciences in Falenty, Warsaw Branch, ul. Rakowiecka 32, 02-532 Warsaw, Poland¹ 

[1] Institute of Technology and Life Sciences in Falenty, Warsaw Branch, ul. Rakowiecka 32, 02-532 Warsaw, Poland

关键词: Keywords: land use;    modelling;    nitrogen;    permanent grasslands;    SWAT;    water pollution;   

DOI  :  10.2478/jwld-2014-0015

学科分类：农业科学（综合）

来源: Instytut Technologiczno-Przyrodniczego / Institute of Technology and Life Sciences

【 摘 要 】

The water pollution in areas with intensive agriculture is growing rapidly. Computer model is a tool which can help in finding solutions for water pollution reduction and help in creation of catchment management plans. In this research the SWAT model (Soil and Water Assessment Tool) was used to test the influence of introduction of permanent grasslands into the catchment on nitrate nitrogen load in surface water. Small catchment of upper Zgłowi?czka River in central Poland with intensive agriculture was chosen as a test site. Model was fed with data about land use, soils, weather, elevation and management practices and calibrated and validated using flow data and nitrate nitrogen loads data. Then 2 scenarios with land use change were tested. A part of arable land was changed into permanent grasslands. The results show that permanent grasslands are effective in reducing nitrate nitrogen load. The load was reduced by 19% when permanent grasslands constituted 10% of arable land and by 38% with permanent grasslands taking up 20% of arable land.

【 授权许可】

Unknown