مشخصات پژوهش

عنوان	Long-term land-use change effects on phosphorus fractionation in Zrêbar Lake margin soils
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	phosphorus fractionation, land use, Zrêbar Lake, native land, wetland
چکیده	The aim of this study was to survey long-term changes in phosphorus (P) fractions in soils in different land uses. Sequential extraction had been used to determine soil P fractionation on the basis of land-use change, i.e. native forest to vineyard and wetland to both alfalfa and wheat at the end of 30 and 20 years, respectively. The highest values of labile-P (L-P) fractions in surface soil layers were observed in the cultivated land. The calcium-bound P was the most affected fraction by land-use change with the lowest amount in the vineyard and the highest amount in the alfalfa land. Conversion of forest to vineyards causes P in the soils to be more vulnerable to transmission; thus, the least amount of total P (T-P) in vineyard may be attributed to the removal of sediment and sediment bond P from runoff in response to land-use changes. Average L-P in alfalfa land was two times more than that in vineyard. Results showed that 44.5% of T-P in native land was stored in surface layer; besides, the portion of the arable surface horizon in T-P sequestration was 33%.
پژوهشگران	محسن شکل آبادی (نفر اول)، حمید محمودزاده (نفر دوم)، علی اکبر محبوبی (نفر سوم)، بهرام قره باغی (نفر چهارم)، بائو آهرنز (نفر پنجم)