民勤绿洲沙地系统特征及“退耕”建议

The Suggestion on Returning Farmland and Characteristics of Sand Farmland System in Minqin Oasis

以民勤绿洲退耕地为研究对象,从民勤绿洲耕地退耕背景及特点出发,阐述了民勤绿洲沙地系统特征,并提出了退耕地生态恢复建议。认为民勤绿洲沙地系统存在水资源短缺、林牧业用地比例偏低、农业用地面积与水资源活动紧密相连的特点;民勤耕地退耕是当前水资源危机解决的关键,退耕地生态治理的意义在于变退耕地生态恢复区为新的防风阻沙林区,从而加强绿洲防护,也充当了减少水资源利用的生态减压区角色,更调节了当地农业产业结构和行业结构;提出有顺序条理化退耕,重点治理风沙口退耕地,退耕前采取植被恢复措施,政府制定、协调退耕地植被恢复各项工作的建议。

The background and characteristics of returning farmland in Minqin oasis with the study of returning farmland in Minqin oasis was described.Recommendations,ecological restoration targets to returning farmland were proposed.Found sand farmland systems in Minqin Oasis have characters that water resources are short,percentage of forest and animal husbandry land is low,the area of farmland is related largely to water resources activity.It was the key to solve the current water crisis to return farmland in Minqin oasis.The ecological significance of returning farmland is the change from farmland to the new wind prevention and sand resistance zone.It protected the oasis and acted as eco-decompression zone by reducing use of water resources and also adjusted the local agricultural structure and industrial structure.It gives some advice of ordering principle returning farmland,focusing on the key returning farmland area of sandstorm activity,taking preventive measures with returning farmland under the government＇s drawing up and carrying out the measures of ecological control.