沙漠-黄土南北样带土壤物理性质区域分异特征
Change of Soil Physical Properties from Desert Area to Loess Area in China
Received date: 2012-06-28
Revised date: 2012-07-27
Online published: 2013-01-20
杨岩岩 , 刘连友 , 曹恒武 , 贾振杰 . 沙漠-黄土南北样带土壤物理性质区域分异特征[J]. 中国沙漠, 2013 , 33(1) : 146 -152 . DOI: 10.7522/j.issn.1000-694X.2013.00021
Through collecting the soil samples from desert area, desert-loss transitional area, and loss area, which are located in a meridional desert-loess transition zone in north Loess Plateau, we analyzed the soil bulk density and grain-size. The results showed that: (1) Ddesert>Ddesert-loss>Dloss, and the average soil bulk densities were 1.53 g·cm-3, 1.51 g·cm-3, 1.41 g·cm-3 for the three sub-areas, respectively, which had a transitional trend. (2) Medium and fine sand were higher in the desert area, fine sand was higher in the desert-loess transitional zone, while fine and silty sand were higher in the loess area. From the desert area to the loess area, the soil grain size became smaller; the content of clay particle increased; the sorting gets worse; the skewness belonged to a right skewness but having an increasing trend; the kurtosis changed from mesokurtic to leptokurtic. It was single-kurtosis in the desert area, and it is double-kurtosis in the transitional zone and loess zone.
Key words: desert-loess transitional zone; soil bulk density; grain size
[1]Le Houerou H N.The nature and causes of desertification[M]//Glantz M H.Desertification:Environmental Degradation in and around Arid Lands.Boulder,CO:Westview Press,1977:17-38.
[2]周廷儒,张兰生,等.中国北方农牧交错带全新世环境演变及预测[M].北京:地质出版社,1982.
[3]朱震达,陈广庭.中国土地沙质荒漠化[M].北京:科学出版社,1994.
[4]吴晓旭,邹学勇,王仁德,等.毛乌素沙地不同下垫面的风沙运动特征[J].中国沙漠,2011,31(4):827-835.
[5]唐艳,刘连友,杨志鹏,等.毛乌素沙地南缘灌丛沙丘土壤水分与粒度特征研究[J].水土保持研究,2009,16(2):6-9.
[6]付超峰,赵景波.毛乌素沙地东南缘不同类型沙丘土壤水分分布特征[J].干旱区研究,2011,28(3):377-383.
[7]李智佩,岳乐平,薛祥煦,等.毛乌素沙地沉积物粒度特征与土地沙漠化[J].吉林大学学报(地球科学版),2007,37(3):578-586.
[8]魏孝荣,邵明安.黄土高原沟壑区小流域不同地形下土壤性质分布特征[J].自然资源学报,2007,22(6):976-953.
[9]王晓贤,张学培.晋西黄土高原土壤水分垂直变化规律及生态影响[J].水土保持研究,2009,16(2):200-204.
[10]刘东生.黄土的物质成分和结构[M].北京:科学出版社,1966:2-7.
[11]李万源,沈志宝,吕世华,等.风蚀影响因子的敏感性试验[J].中国沙漠,2007,27(6):984-993.
[12]吉力力·阿不都外力,刘东伟,徐俊荣.艾比湖干涸湖底不同地表类型风蚀强度及粉尘输移通量的风洞试验研究[J].中国沙漠,2009,19(1):63-67.
[13]Blott S J,Pye K.GRADISTAT:A grain size distribution and statistics package for the analysis of unconsolidated sediments[J].Earth Surface Processes and Landforms,2001,26(11):1237-1248.
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