We analyzed the spatial distribution characteristics of fractal dimension of soil particles in woodland, grassland and farmland that in the typical sandy area of the Liaohe River Basin. The results show:As a whole, the fractal dimension of farmland was higher than that of woodland and grassland, and reached the maximum value(2.58) at the depth of 30-50 cm in the farmland soil, and reached the minimum value (2.26) at the depth of 0-10 cm in the grassland soil; the fractal dimension decreased as the depth increases in woodland soil, and increased as the depth increases in grassland and farmland soil. The fractal dimension of soil was significantly positively correlated with silt content(P<0.01). Farmland is more conducive to form the small soil particles, improve soil texture, whose soil structure is relatively good, followed by woodland, grassland is relatively poor.
[1] 王德,傅伯杰,陈利顶,等.不同土地利用类型下土壤粒径分形分析——以黄土丘陵沟壑区为例[J].生态学报,2007,27(7):3081-3089.
[2] Tyler S W,Wheatcraft S W.Application of fractal mathematics to soil water retention estimation[J].Soil Science Society of America Journal,1989,53(4):987-996.
[3] 魏茂宏,林慧龙.江河源区高寒草甸退化序列土壤粒径分布及其分形维数[J].应用生态学报,2014,25(3):679-686.
[4] Turcotte D L.Fractals and fragmentation[J].Journal of Geophysical Research Solid Earth,1986,91(B2):1921-1926.
[5] Arya L M,Paris J F,Arya L M,et al.A physicoempirical model to predict the soil moisture characteristic from particle-size distribution and bulk density[J].Soil Science Society of America Journal,1981,45(6):1023-1030.
[6] Katz A J,Thompson A H.Fractal sandstone pores:implications for conductivity and pore formation.[J].Physical Review Letters,1985,54(12):1325-1328.
[7] Perfect E,Kay B D.Applications of fractals in soil and tillage research:a review[J].Soil & Tillage Research,1995,36(1/2):1-20.
[8] 杨培岭,罗远培,石元春.用粒径的重量分布表征的土壤分形特征[J].科学通报,1993,38(20):1896-1899.
[9] 党亚爱,李世清,王国栋,等.黄土高原典型土壤剖面土壤颗粒组成分形特征[J].农业工程学报,2009,25(9):74-78.
[10] 赵超,鲁瑞洁,李金凤.青海湖流域土地沙漠化及表土粒度特征[J].中国沙漠,2015,35(2):276-283.
[11] 刘美龄,叶勇,曹长青,等.海南东寨港红树林土壤粒径分布的分形特征及其影响因素[J].生态学杂志,2008,27(9):1557-1561.
[12] 张季如,朱瑞赓,祝文化.用粒径的数量分布表征的土壤分形特征[J].水利学报,2004(4):67-71,79.
[13] Su Y Z,Zhao H L,Zhang T H,et al.Soil properties following cultivation and non-grazing of a semi-arid sandy grassland in northern China[J].Soil & Tillage Research,2004,75(1):27-36.
[14] 杜建会,严平,丁连刚,等.民勤绿洲不同演化阶段白刺灌丛沙堆表面土壤理化性质研究[J].中国沙漠,2009,29(2):248-253.
[15] 刘金伟,李志忠,武胜利,等.新疆艾比湖周边白刺沙堆形态特征空间异质性研究[J].中国沙漠,2009,29(4):628-635.
[16] 朱华,程先富,王世航,等.基于GIS的安徽省表层土壤颗粒分形特征研究[J].水土保持研究,2009,16(4):146-149.
[17] 刘光孟,汪云甲,张海荣,等.空间分析中几种插值方法的比较研究[J].地理信息世界,2011,09(3):41-45.
[18] 胡云锋,刘纪远,庄大方,等.不同土地利用/土地覆盖下土壤粒径分布的分维特征[J].土壤学报,2005,42(2):336-339.
[19] 贾晓红,李新荣,李元寿.干旱沙区植被恢复过程中土壤颗粒分形特征[J].地理研究,2007,26(3):518-525.
[20] 巨莉,文安邦,郭进,等.三峡库区不同土地利用类型土壤颗粒分形特征[J].水土保持学报,2011,25(5):234-237.
[21] 张秦岭,李占斌,徐国策,等.丹江鹦鹉沟小流域不同土地利用类型的粒径特征及土壤颗粒分形维数[J].水土保持学报,2013,27(2):244-249.
[22] 伏耀龙,张兴昌,王金贵.岷江上游干旱河谷土壤粒径分布分形维数特征[J].农业工程学报,2012,28(5):120-125.
[23] 赵明月,赵文武,刘源鑫.不同尺度下土壤粒径分布特征及其影响因子——以黄土丘陵沟壑区为例[J].生态学报,2015,35(14):4625-4632.
[24] 樊立娟,胡广录,廖亚鑫,等.河西走廊斑块植被区表层土壤粒径及其分形维数的空间变异特征[J].干旱区研究,2015,32(6):1068-1075.
[25] 姚姣转,刘廷玺,童新,等.科尔沁沙地沙丘-草甸相间地土壤颗粒的分形特征[J].中国沙漠,2016,36(2):433-440.
[26] 苏永中,赵哈林.科尔沁沙地农田沙漠化演变中土壤颗粒分形特征[J].生态学报,2004,24(1):71-74.