作 者：
李得禄;满多清;刘有军;严子柱;马俊梅;汪媛艳
关键词：
石羊河流域下游;退耕年代;风沙流;退耕地;输沙量
摘 要：
不同年代退耕地受土壤水分与植被的影响,地表风沙流输沙量呈规律性变化。以石羊河流域下游民勤治沙站不同年代退耕地为研究对象,用风沙流观测仪测定了不同年代退耕地上0~100 cm的风沙流输沙量,分析了不同年代退耕地风沙流年输沙量等特征。研究结果表明:(1)输沙量总体上表现为随退耕时间的增加而呈增加趋势,退耕时间越长,年输沙量越大,同时输沙量也受周边地貌的影响;(2)不同年代退耕地输沙量随季节呈规律性变化,而且与风速关系密切,输沙量大小与当地风季发生规律相一致;(3)退耕地风沙流输沙量与退耕年代总体上呈二元线性相关关系,相关系数为0.88;(4)通过聚类分析将10个不同年代退耕地风沙流输沙量分为三类,17年为一类,13年为一类,其余退耕年代的为一类。不同年代退耕地因退耕时间的不同,受周边地貌,植被的影响,其风沙流输沙量有很大差异,研究结果为退耕地利用与治理提供了科学依据。
译 名：
Characteristics of Wind-sand Flow in Abandoned Lands of Different Ages in Shiyang River Basin
作 者：
Li Delu;Man Duoqing;Liu Youjun;Yan Zizhu;Ma Junmei;Wang Yuanyan;Minqin National Studies Station for Desert Steppe Ecosystem & Gansu Desert Control Research Institute;
单 位：
Li Delu%Man Duoqing%Liu Youjun%Yan Zizhu%Ma Junmei%Wang Yuanyan%Minqin National Studies Station for Desert Steppe Ecosystem & Gansu Desert Control Research Institute
关键词：
downstream of Shiyang River basin;;abandoned years;;wind sand flow;;abandoned lands;;sand transport flux
摘 要：
Due to the influence of soil moisture and vegetation, the surface sand flow of abandoned lands of different ages presented regular variation. The abandoned lands of different ages in Minqin sand management station in the downstream of Shiyang River basin were used as research objects, the sediment runoff of sandflow in 0-100 cm were measured by sand flow observation instrument, and the characteristics of different ageswere analyzed. The results showed that:(1) the total sand transport flux had an increasing trend with the increasing of abandoned time, the longer the abandoned time, the greater the sand transport flux, at the sametime, sand transport flux was influenced by the surrounding landscape environment;(2) sand transport flux ofdifferent ages changed regularly with the seasons, and was closely related to the wind speed, the size of sandtransport flux was consistent with the regularity of local wind season;(3) sand transport flux of abandoned landsoverall showed a binary linear correlation with abandoned time, the correlation coefficient was 0.88;(4) thetotal sand transport flux of 10 samples were divided into three classes through cluster analysis, namely, 17 years, 13 years and the rest. Due to the difference of abandoned time and the influence of the surroundinglandscape and vegetation, the sand transport flux of different abandoned lands showed great difference. The results can provide a scientific basis for the utilization of abandoned lands.
