艾比湖干涸湖底6种景观类型不同深度富盐沉积物粒径的分形特征

doi:10.7522/j.issn.1000-694X.2013.00115

摘要/Abstract

摘要：

干旱区干涸湖底在强烈的风蚀作用下成为盐碱尘暴的重要来源之一。为研究干涸湖底不同景观类型的抗风蚀效应,选择新疆准噶尔盆地西部艾比湖干涸湖底6种不同景观类型下的富盐沉积物为研究对象,基于沉积物样品的体积粒径分布数据,运用单重、多重分形理论和典范对应分析(CCA)排序方法,重点探讨艾比湖干涸湖底不同景观类型下富盐沉积物粒径分布分维值的分异特征。结果显示:胡杨林带 (L1)、乔本结合带 (L2)、草本结合带 (L3)、芦苇荒漠带 (L4)、梭梭荒漠带 (L5)、无植被覆盖 (L6)6种景观类型0～30 cm和30～60 cm的富盐沉积物分维值分别存在显著性差异。各景观0～30 cm分维值介于1.94～2.40,30～60 cm分维值介于1.92～2.53,总体均处于低位水平。0～30 cm平均分维值依次为L5>L1>L6>L4>L2>L3,30～60 cm平均分维值为L5=L1>L4>L6>L2>L3。富盐沉积物粒径分布分维值与粒径小于73.63 μm的体积含量呈显著正相关。研究表明多重分形维数和CCA排序方法可以有效的揭示干涸湖底自然植被条件下不同深度富盐沉积物粒径分布的均匀性特征。指出干涸湖底风蚀控制研究方向应集中在根据湖区的富盐沉积物-植物特征,对富盐沉积物性状进行改良,提高原生物种幼苗存活率,通过生态修复防治盐尘暴。

关键词: 干涸湖底, 分形, CCA排序分析, 艾比湖, 沉积物

Abstract:

Dry lakebed has become one of the main sources of saline-alkali dust storms in arid areas due to strong wind erosion. In order to study the anti-erosion effects of different types of landscapes, salt-rich sediments were collected under six different types of landscapes in the playa of the Ebinur Lake. Using the methods of single and multi-fractal dimension and Canonical Correspondence Analysis (CCA), the spatial distribution characteristics of erosion intensity were discussed with the particle size data of salt-rich sediments. The results showed that fractal dimension of the particle size distribution (PSD) had significant differences between two sediment samples from the depth of 0-30 cm and 30-60 cm under six kinds of landscapes. The fractal dimension values of the PSD ranged from 1.94 to 2.40 in the sediments from the depth of 0-30 cm and decreased in the order of zone dominated by Haloxylon ammodendron (L5)> by Populus euphratica (L1)> by bare desert (L6)> by Phragmites australis (L4)> by other trees（L2）> by herbs (L3), but the other ranged from 1.92 to 2.53 from the depth of 30-60 cm and followed the order of L5=L1>L4>L6>L2>L3. The fractal dimension of the PSD was significantly positively correlated with the particle volume-size fraction (<73.63 μm). Thus, the multifractal dimension and CCA analysis can provide useful methods for analyzing the uniformity characteristics of the PSD from different depths of salt-rich sediments in natural vegetation. According to studies of the salt-rich sediments and plant in the Ebinur Lake, establishing of native vegetation is one method of stabilizing shifting soil and minimizing saline dust pollution from dry lakebeds. It is suggested that the future research should focus more on ecological restoration for preventing saline dust storms.

Key words: dry lakebed, fractal characteristics, canonical correspondence analysis, Ebinur Lake, sediment

中图分类号:

S151.9

葛拥晓1,2, 吉力力·阿不都外力1, 刘东伟3, 米热班·阿布里米提1,4. 艾比湖干涸湖底6种景观类型不同深度富盐沉积物粒径的分形特征[J]. 中国沙漠, 2013, 33(3): 804-812.

GE Yong-xiao1,2, ABUDUWAILI Jilili1, LIU Dong-wei3, ABULIMITI Mireban1,4. Fractal Characteristics of Particle Size Distribution in Salt-rich Sediments from Different Depths under Six Different Types of Landscapes in the Playa of the Ebinur Lake[J]. JOURNAL OF DESERT RESEARCH, 2013, 33(3): 804-812.

参考文献

[1]Briere P R.Playa,playa lake,sabkha:proposed definitions for old terms[J].Journal of Arid Environments,2000,45(1):1-7.

[2]Barth H J.Comment on: Playa,playa lake, sabkha: proposed definitions for old terms by H J Barth et al[J].Journal of Arid Environments,2001,47(4):513-514.

[3]李保国.分形理论在土壤科学中的应用及其展望[J].土壤学进展,1994,22(1):1-10.

[4]Perfect E,Kay B D.Applications of fractals in soil and tillage research:a review[J].Soil and Tillage Research,1995,36(1/2):1-20.

[5]董治宝,李振山.风成沙粒度特征对其风蚀可蚀性的影响[J].土壤侵蚀与水土保持学报,1998,4(4):1-5.

[6]闫玉春,唐海萍,张新时,等.基于土壤粒度分析的草原风蚀特征探讨[J].中国沙漠,2010,30(6):1263-1268.

[7]汪言在,伍永秋,苟诗薇.塔克拉玛干沙漠中部地区两类半隐蔽格状沙障内部沉积粒度特征浅析[J].中国沙漠,2009,29(6):1056-1062.

[8]Huang G,Zhang R.Evaluation of soil water retention curve with the pore-solid fractal model[J].Geoderma, 2005,127(1/2):52-61.

[9]罗格平,许文强,陈曦.天山北坡绿洲不同土地利用对土壤特性的影响[J].地理学报,2005,60(5):779-790.

[10]桂东伟,雷加强,曾凡江,等.绿洲化过程中农田土壤粒径分布性质变化[J].中国沙漠,2010,30(6):1354-1361.

[11]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.

[12]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.

[13]淮态,庞奖励,文青,等.不同土地利用方式下土壤粒径分布的分维特征[J].生态与农村环境学报,2008,24(2):41-44.

[14]高君亮,李玉宝,虞毅,等.毛乌素沙地不同土地利用类型土壤分形特征[J].水土保持研究,2010,17(6):220-223.

[15]郭冬梅,白英,郭炜.表层风蚀土壤粒径分布的分形特征研究[J].内蒙古农业大学学报(自然科学版),2005,26(1):82-86.

[16]Kent M.Numerical classification and ordination methods in biogeography[J].Progress in Physical Geography,2006,30(3):399.

[17]加帕尔\5买合皮尔,A A图尔苏诺夫.亚洲中部湖泊水生态学概论[M].乌鲁木齐:新疆科技卫生出版社,1996:103-109.

[18]吉力力\5阿不都外力,徐俊荣,穆桂金,等.艾比湖盐尘对周边地区土壤盐分及景观变化的影响[J].冰川冻土,2007,29(6):928-939.

[19]Abuduwaili J,Liu D W,Wu G Y.Saline dust storms and their ecological impacts in arid regions[J].Journal of Arid Land, 2010,2(2):144-150.

[20]桂东伟,雷加强,曾凡江,等.绿洲边缘不同土地利用方式下土壤粒径分布特征[J].林业科学,2011,47(1):22-28.

[21]Tyler S W,Wheatcraft S W.Fractal scaling of soil particle-size distributions: analysis and limitations[J].Soil Science Society of America Journal,1992,56(2):362-362.

[22]Caniego F J,Espejo R,Martin M A,et al.Multifractal scaling of soil spatial variability[J].Ecological Modelling,2005,182(3):291-303.

[23]Montero E.Rényi dimensions analysis of soil particle-size distributions[J].Ecological Modelling,2005,182(3-4):305-315.

[24]Martin M A,Montero E.Laser diffraction and multifractal analysis for the characterization of dry soil volume-size distributions[J].Soil and Tillage Research,2002,64(1/2):113-123.

[25]叶功富,林武星,谭芳林,等.沙岸木麻黄防护林不同更新模式土壤结构分形特征及其效应[J].中国生态农业学报,2008,16(6):1352-1357.

[26]吉力力\5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,2009,29(1):63-67.

[27]Miranda J G V,Montero E,Alves M C,et al.Multifractal characterization of saprolite particle-size distributions after topsoil removal[J].Geoderma,2006,134(3/4):373-385.

[28]Breen A N,Richards J H.Seedling growth and nutrient content of two desert shrubs growing in amended soil[J].Arid Land Research and Management,2008,22(1):46-61.

[29]刘东伟,吉力力\5阿不都外力,雷加强,等.盐尘暴及其生态效应[J].中国沙漠,2011,31(1):168-173.