土地利用方式对径流中N、P输出的影响

Effects of Land Use of Nitrogen and Phosphorus Output in Runoff

不同土地利用方式对径流中N、P输出的影响有很大差异。降雨和地表径流是农田营养物质流失的主动力。该文综述了有关农用地N、P流失的研究现状,通过对农用地,特别是坡地降雨径流中N、P浓度的讨论,以及对旱地和水田中N、P流失量差异的比较,研究不同土地利用方式对径流中N、P输出的影响。最后,结合近年来国内外研究进展,提出了将来的研究重点。

Different land use have greatly different influence to the Nitrogen and Phosphorus output in runoff. The rainfall and runoff are the main power of the farmland nutriment loss,so the article reviewed the current situation of research about the loss of N and P in farming land. According to the discussions of density of N and P in the runoff on farming land ,especially the slope farmland ,compared with the difference of the loss of N and P in the dry land and paddy field ,the influence of the different land use to the influence of N and P output in the runoff was studied. Finally,combined the studying progress both at home and abroad in recent years,the research prospect was advanced .