img

官方微信

  • CN 62-1070/P
  • ISSN 1000-694X
  • 双月刊 创刊于1981年
高级检索

浑善达克沙地风蚀物粒度和元素分异特征

  • 娄俊鹏 ,
  • 蔡迪文 ,
  • 马文勇 ,
  • 焦琳琳
展开
  • 1.中铝环保节能集团有限公司,北京 102209
    2.中国科学院地理科学与资源研究所,北京 100101
    3.岭南师范学院地理科学学院,广东 湛江 524048
    4.中国科学院空天信息创新研究院 数字地球重点实验室,北京 100094
蔡迪文(E-mail: caidw@lingnan.edu.cn
娄俊鹏(1988—),男,河南平顶山人,博士,主要从事生态修复研究。E-mail: loujp.2019@tsinghua.org.cn

收稿日期: 2024-02-21

  修回日期: 2024-04-15

  网络出版日期: 2024-10-15

基金资助

国家自然科学基金项目(42301003);国家重点研发计划项目(2023YFC3708905)

Grain size and element differentiation during aeolian processe in Otindag Sandy Land

  • Junpeng Lou ,
  • Diwen Cai ,
  • Wenyong Ma ,
  • Linlin Jiao
Expand
  • 1.Chinalco Environmental Protection and Energy Conservation Group Co. ,Ltd,Beijing 102209,China
    2.Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China
    3.School of Geographical Sciences,Lingnan Normal University,Zhanjiang 524048,Guangdong,China
    4.Key Laboratory of Digital Earth Sciences,Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China

Received date: 2024-02-21

  Revised date: 2024-04-15

  Online published: 2024-10-15

摘要

为探究浑善达克沙地风蚀物粒度和化学元素的分异特征及相互关系,通过风洞试验分析了不同风速下风蚀物的粒径级配、粒度分布频率曲线和粒度参数等特征以及风蚀物元素含量的变化规律。结果表明:土壤风蚀速率与风速符合指数函数关系,不同风速下风蚀物的粒度分布曲线皆为单峰且峰态皆非常宽,平均粒径2.46~2.58 Ф,分选性较差,呈极度正偏。风蚀物中元素含量随风速变化模式主要包括连续下降型、“W”下降型和先升后降型,大部分元素含量与风蚀物中<125 μm部分极显著正相关关系,而与125~500 μm部分极显著负相关。

本文引用格式

娄俊鹏 , 蔡迪文 , 马文勇 , 焦琳琳 . 浑善达克沙地风蚀物粒度和元素分异特征[J]. 中国沙漠, 2024 , 44(5) : 143 -154 . DOI: 10.7522/j.issn.1000-694X.2024.00045

Abstract

In order to explore the differentiation and relationship between soil particle size and chemical elements during aeolian processes in Otindag Sandy Land, and to provide data and theoretical support for ecological governance and vegetation restoration in arid areas, this study analyzed the characteristics of grain size gradation, grain size distribution frequency curve and grain size parameters of wind eroded sediment at different wind speeds, as well as the changes of elemental content of wind eroded sediment through wind tunnel tests. The results show that the relationship between soil wind erosion rate and wind speed follows an exponential law, and the particle size distribution of wind eroded sediment is unimodal. The average particle size of wind eroded sediment at different wind speeds is between 2.46 Ф and 2.58 Ф, and the sorting of the sediment is extremely positive, and the peak state is very wide as well. The changes of elemental content in wind eroded sediment with wind speed mainly include three types, namely, continuous decrease type, "W" decrease type, and rise-and-fall type. Most of the elemental content has a significant positive correlation with the <125 μm portion of wind eroded sediment, and a significant negative correlation with the 125-500 μm portion.

参考文献

1 Martz L W, Li L.Grain-size analysis of surface material under wind erosion using the effective surface concept[J].Earth Surface Processes and Landforms,1997,22(1):19-29.
2 Zhu B Q, Yu J J.Aeolian sorting processes in the Ejina desert basin (China) and their response to depositional environment[J].Aeolian Research,2014,12:111-120.
3 Wang X M, Lang L L, Hua T,et al.The effects of sorting by aeolian processes on the geochemical characteristics of surface materials:a wind tunnel experiment[J].Frontiers of Earth Science,2017,12(4):1-9.
4 Ravi S, Breshears D, Huxman T,et al.Land degradation in drylands:interactions among hydrologic-aeolian erosion and vegetation dynamics[J].Geomorphology,2010,116(3/4):236-245.
5 章明奎.砂质土壤不同粒径颗粒中有机碳、养分和重金属状况[J].土壤学报,2006(4):584-591.
6 胡慧,包维楷,张强,等.土壤石砾含量变化对根系及植物生长的影响研究进展[J].应用与环境生物学报,2021,27(2):303-308.
7 Li T, Li Y G, Liu H,et al.Chemical weathering intensity and geochemical characteristics of Cretaceous terrigenous clastic rock-purple soil profiles in the Pushi area,Xichang[J].Geological Journal,2022,57(9):3587-3600.
8 Kunz B E, Warren C J, Jenner F E,et al.Critical metal enrichment in crustal melts:the role of metamorphic mica[J].Geology,2022,50(11):1219-1223.
9 Chen S, Wu C C, Hong S S,et al.Assessment,distribution and regional geochemical baseline of heavy metals in soils of densely populated area:a case study[J].International Journal of Environmental Research and Public Health,2020,17(7):1-10.
10 傅伯杰,郭旭东,陈利顶,等.土地利用变化与土壤养分的变化:以河北省遵化县为例[J].生态学报,2001,21(6):926-931.
11 张春来,宋长青,王振亭,等.土壤风蚀过程研究回顾与展望[J].地球科学进展,2018,33(1):27-41.
12 Webb N P, McCord S E, Edwards B L,et al.Vegetation canopy gap size and height:critical indicators for wind erosion monitoring and management[J].Rangeland Ecology & Management,2021,76(1):78-83.
13 Wang X M, Geng X, Liu B,et al.Desert ecosystems in China:past,present,and future[J].Earth-science Reviews,2022,234:1-11.
14 孟惠聪,胡光印,董治宝,等.若尔盖盆地流动沙丘治理前后表层沉积物粒度变化特征[J].中国沙漠,2024,44(3):1-12.
15 Larney F J, Bullock M S, Janzen H H,et al.Wind erosion effects on nutrient redistribution and soil productivity[J].Journal of Soil & Water Conservation,1998,53(2):133-140.
16 Visser S M, Sterk G.Nutrient dynamics-wind and water erosion at the village scale in the Sahel[J].Land Degradation & Development,2010,18:1-9.
17 渠洪杰,陈英富,卢晶,等.浑善达克沙地最近一次大规模沙化的沉积记录及其光释光年龄[J].中国地质,2022,49(3):1003-1004.
18 赵媛媛,武海岩,丁国栋,等.浑善达克沙地土地沙漠化研究进展[J].中国沙漠,2020,40(5):101-111.
19 李庆,周娜,王盛,等.气候变化和人类活动对土壤风蚀影响的定量评估:以内蒙古自治区为例[J].中国沙漠,2024,44(1):178-188.
20 罗晶,黄晓霞,程宏,等.浑善达克沙地景观结构变化对生态系统服务的影响[J].中国沙漠,2022,42(4):99-109.
21 齐丹卉,杨洪晓,卢琦,等.浑善达克沙地植物群落主要类型与特征[J].中国沙漠,2021,41(4):23-33.
22 朱震达,刘恕.中国沙漠化土地的特征及其防治的途径[J].自然资源,1980(3):25-37.
23 Li D F, Wang X M, Lou J P,et al.Heterogeneity and loss of soil nutrient elements under aeolian processes in the Otindag Desert,China[J].Aeolian Research,2018,30:48-53.
24 Wang X M, Lou J P, Ma W Y,et al.The impact of reclamation on aeolian desertification of four species in the Otindag Desert,China[J].Catena,2017,157:189-194.
25 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.
26 贾建军,高抒,薛允传.图解法与矩法沉积物粒度参数的对比[J].海洋与湖沼,2002,33(6):577-582.
27 Wang X M, Dong Z B, Yan P,et al.Wind energy environments and dunefield activity in the Chinese deserts[J].Geomorphology,2005,65(1/2):33-48.
28 董治宝,陈渭南,董光荣,等.关于人为地表结构破损与土壤风蚀关系的定量研究[J].科学通报,1995(1):54-57.
29 Houser C A, Nickling W G.The emission and vertical flux of particulate matter <10 μm from a disturbed clay-crusted surface[J].Sedimentology,2010,48(2):255-267.
30 Gillette D A, Stockton P H.The effect of nonerodible particles on wind erosion of erodible surfaces[J].Journal of Geophysical Research-atmospheres,1989,94(10):12885-12893.
31 Gillette D A, Chen W N.Size distributions of saltating grains:an important variable in the production of suspended particles[J].Earth Surface Processes and Landforms,1999,24(5):449-462.
32 宗月香.浑善达克沙地气候因子与土壤质地相关性初探[J].内蒙古大学学报(自然科学版),2003(3):334-337.
33 刘树林,王涛.浑善达克沙地的土地沙漠化过程研究[J].中国沙漠,2007,27(5):719-724.
34 Chepil W S.Factors that influence clod structure and erodibility of soil by wind:IV.sand,silt,and clay[J].Soil Science,1955,80:1-13.
35 卢连战,史正涛.沉积物粒度参数内涵及计算方法的解析[J].环境科学与管理,2010,35(6):54-60.
36 Bundschuh M, Mckie B G.An ecological and ecotoxicological perspective on fine particulate organic matter in streams[J].Freshwater Biology,2016,61(12):2063-2074.
文章导航

/