论文部分内容阅读
一、引言西北黄土区分布在黄河中游大部地区,由于地形破碎,坡度陡峭,暴雨集中,黄土质松,易为水蚀,加以过去长期封建统治,土地利用极不合理,滥伐滥垦滥牧,造成严重的水土流失现象,坡面片蚀和沟壑割切是水土流失的主要形式,为黄河泥沙的主要来源。为了寻找水土流失规律和进一步研究不同水土保持措施对水土流失的影响,从而为坡地合理利用规划供给科学的依据和资料,自1950年起在陕西的绥德,甘肃
I. INTRODUCTION The Northwest Loess Plateau is located in most areas of the middle reaches of the Yellow River. Due to the terrain broken, steep slopes, heavy rainfall, loose Loess Plateau and easy water erosion, the past long-term feudal rule, extremely irrational land use, , Resulting in serious soil erosion, slope erosion and gully cutting is the main form of soil erosion, the Yellow River sediment is the main source. In order to find the regularity of soil and water loss and further study the impact of different soil and water conservation measures on soil erosion, so as to provide scientific basis and information for rational utilization of slope planning, Suide and Gansu