黄土高原生物结皮的风化成土效应

doi:10.16843/j.sswc.2023.06.001

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Abstract [Background] As the pioneer groups extensively developed in arid and semiarid areas, biocrusts have a variety of ecological functions including essential weathering and pedogenic effects on the surface soil. These biocrust effects on soil weathering and formation are of great importance but still have not yet been intensively investigated, especially for the primitive soil such as loess soil and aeolian sandy soil. [Methods] In the northern Chinese Loess Plateau, the biocrusts developed on loess and aeolian sandy soils for about 30 years were sampled by field investigation. The major elements geochemical characteristics of the soil within biocrust layer were explored by laboratory analysis, and the different weathering and pedogenic indicators that indicated pedogenic processes were quantified by formula calculation. The correlations among the weathering and pedogenic indicators and their interpretations were also revealed by correlation and factors analyses. [Results] 1) The contents of K₂O, Na₂O, CaO, and MgO in the soil within biocrust layer were significantly lower than those in un-crusted soil, while Al₂O₃ and Fe₂O₃ were comparatively enriched in biocrust layer. 2) The silica-alumina-iron ratio, silica-alumina ratio, leaching index, weathering and leaching coefficient, and de-alkalization coefficient of the soil within biocrust layer were averagely 40.0% lower than those of un-crusted soil, whereas the weathering index, residual index, plagioclase alteration index, and mafic alteration index were averagely 1.6 times higher than those of un-crusted soil. These results indicated that biocrusts greatly promoted the leaching process of soil base cations as compared with un-crusted soil, and the degree of alternation from primary minerals to secondary clay minerals in the soil within biocrust layer was higher than that in un-crusted soil. 3) In comparison to un-crusted soil, biocrusts promoted weathering process of soil minerals. More specifically, the chemical alteration index of soil within biocrust layer was 48.5 on average, indicating that it was transitioning from the primary to the moderate weathering stage. 4) According to the results of correlations and factors analyses, the chemical alteration index and plagioclase alteration index can be utilized as typical and representative indexes to indicate weathering and pedogenic processes of soil. [Conclusions] All the above findings indicated that biocrusts made a significant contribution to the weathering and pedogenic processes of primitive soils(loess and aeolian sandy soils). The development of biocrusts greatly promoted the base leaching, as well as the weathering and pedogenic degree of surface soil, which is of positive significance to soil formation and ecological restoration of the fragile ecological area in the Loess Plateau. It is, therefore, essential to pay high attention to biocrust effects on weathering and pedogenesis of soil in drylands.

Key words： soil genesis clay mineral element geochemistry chemical alteration index Loess Plateau

Received: 27 December 2021

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S151.1

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	CAO Yousong
	XIAO Bo
	JIANG Zihao

Cite this article:

CAO Yousong,XIAO Bo,JIANG Zihao. Soil weathering and pedogenesis effect of biocrusts in the Chinese Loess Plateau[J]. SSWC, 2023, 21(6): 1-12.

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http://journal12.magtechjournal.com/Jweb_stbc/EN/10.16843/j.sswc.2023.06.001 OR http://journal12.magtechjournal.com/Jweb_stbc/EN/Y2023/V21/I6/1

[1]	BlANCA B L,MACARIO B.Weathering and soil formation in hot,dry environment mediated by interactions[J].Biology and Fertility of Soils,2020,56(4):447.
[2]	KALININ P I,KUDREVATYKH I Y,MALYSHEV V V,et al.Chemical weathering in semi-arid soils of the Russian plain[J].Catena,2021,206:105554.
[3]	MUHS D R.The geochemistry of loess:Asian and North American deposits compared[J].Journal of Asian Earth Sciences,2018(155):81.
[4]	赵万苍,刘连文,陈骏,等.中国沙漠元素地球化学区域特征及其对黄土物源的指示意义[J].中国科学:地球科学,2019,49(9):1425.ZHAO Wancang,LIU Lianwen,CHEN Jun,et al.Geochemical characterization of major elements in desert sediments and implications for the Chinese loess source[J].Science China:Earth Sciences,2019,49(9):1425.
[5]	王斌,曾琳,赵万苍,等.对黄土高原风尘搬运动力与沉积控制因素的新认识[J].中国沙漠,2017,37(2):237.WANG Bin,ZENG Lin,ZHAO Wancang,et al.New research progress of the transport dynamics and the accumulation factor of the aeolian dust in Chinese Loess Plateau[J].Journal of Desert Research,2017,37(2):237.
[6]	齐雁冰,常庆瑞,刘梦云.风蚀水蚀交错区黄土粘土矿物特征及环境意义[J].水土保持学报,2015,29(1):159.QI Yanbing,CHANG Qingrui,LIU Mengyun.Clay mineral characteristics of loess as well as environmental significance in wind-water erosion crisscross region[J].Journal of Soil and Water Conservation,2015,29(1):159.
[7]	ZHOU Xiaobin,ZHAO Yunge,BELNAP J,et al.Practices of biological soil crust rehabilitation in China:Experiences and challenges[J].Restoration Ecology,2020,28:45.
[8]	LI Shenglong,BOWKER M A,XIAO Bo.Biocrusts enhance non-rainfall water deposition and alter its distribution in dryland soils[J].Journal of Hydrology,2021(595):126050.
[9]	郭忠录,蔡崇法.生物土壤结皮研究进展与热点- 基于CiteSpace和HistCite计量分析[J].中国水土保持科学,2019,17(5):146.GUO Zhonglu,CAI Chongfa.Research status and hotspots of biological soil crust based on CiteSpace and HistCite[J].Science of Soil and Water Conservation,2019,17(5):146.
[10]	SCHULZ S,BRANKATSCHK R,DUMIG A,et al.The role of microorganisms at different stages of ecosystem development for soil formation[J].Biogeosciences,2013,10(6):3983.
[11]	蒙文萍,戴全厚,冉景丞.苔藓植物岩溶作用研究进展[J].植物生态学报,2019,43(5):396.MENG Wenping,DAI Quanhou,RAN Jingcheng.A review on the process of bryophyte karstification[J].Chinese Journal of Plant Ecology,2019,43(5):396.
[12]	田世民,袁榆梁,李锦荣,等.沙漠矿物组成与生态修复的互馈关系研究[J].水利学报,2020,51(4):410.TIAN Shimin,YUAN Yuliang,LI Jinrong,et al.Study on the mutualism between mineral composition and ecological restoration in desert area[J].Journal of Hydraulic Engineering,2020,51(4):410.
[13]	傅寒晶,简星,梁杭海.硅酸盐化学风化强度评估的沉积物指标与方法研究进展[J].古地理学报,2021,23(6):1.FU Hanjing,JIAN Xing,LIANG Hanghai.Research progress of sediment indicators and methods for evaluation of silicate chemical weathering intensity[J].Journal of Palaeogeography,2021,23(6):1.
[14]	林春明,张霞,赵雪培,等.沉积岩石学的室内研究方法综述[J].古地理学报,2021,23(2):223.LIN Chunming,ZHANG Xia,ZHAO Xuepei,et al.Review of laboratory research methods for sedimentary petrology[J].Journal of Palaeogeography,2021,23(2):223.
[15]	张培新,王攀,杨振京,等.陕北靖边三道沟黄土剖面常量元素地球化学特征[J].科学技术与工程,2019,19(28):56.ZHANG Peixin,WANG Pan,YANG Zhenjing,et al.Major element geochemical features of Sandaogou loess section in Jingbian county,northern Shaanxi province[J].Science Technology and Engineering,2019,19(28):56.
[16]	王攀,董秋瑶,巩雪娇,等.黄土高原- 毛乌素沙漠过渡带靖边地区全新世土壤元素地球化学特征及其环境意义[J].地球科学与环境学报,2020,42(5):678.WANG Pan,DONG Qiuyao,GONG Xuejiao,et al.Geochemical characteristics of soil elements in Jingbian area of Loess Plateau-Mu Us Desert transitional zone,China during Holocene and their environmental implications[J].Journal of Earth Sciences and Environment,2020,42(5):678.
[17]	黄婷婷,史扬子,曹琦,等.黄土高原六道沟小流域近30年来土壤侵蚀变化评价[J].中国水土保持科学,2020,18(1):8.HUANG Tingting,SHI Yangzi,CAO Qi,et al.Soil erosion evaluation of Liudaogou catchment in the Loess Plateau during the past 30 years[J].Science of Soil and Water Conservation,2020,18(1):8.
[18]	黄昌勇,徐建明.土壤学[M].北京:中国农业出版社,2010:103.HUANG Changyong,XU Jianming.Soil science[M].Beijing:China Agricultural Press,2010:103.
[19]	BABECHUK M G,WIDDOWSON M,KAMBER B S.Quantifying chemical weathering intensity and trace element release from two contrasting basalt profiles,Deccan Traps,India[J].Chemical Geology,2014(363):56.
[20]	熊平生.江西赣县花岗岩型红土剖面常量元素地球化学特征[J].高校地质学报,2015,21(3):553.XIONG Pingsheng.Major elements geochemical characteristics of the granite-type laterite profile in Gan county,Jiangxi province[J].Geological Journal of China Universities,2015,21(3):553.
[21]	罗万银,董治宝,钱广强,等.戈壁表层沉积物地球化学元素组成及其沉积意义[J].中国沙漠,2014,34(6):1441.LUO Wanyin,DONG Zhibao,QIAN Guangqiang,et al.Geochemical compositions of surface sediment form Gobi desert in northern China and its sedimentary significance[J].Journal of Desert Research,2014,34(6):1441.
[22]	崔颖颖,周亚利,陈国祥,等.毛乌素沙地样品扫描电镜的矿物定量分析[J].干旱区地理,2020,43(6):1505.CUI Yingying,ZHOU Yali,CHEN Guoxiang,et al.Mineral quantitative analysis of Mu Us Sandy Land with QEMSCAN[J].Arid Land Geography,2020,43(6):1505.
[23]	王芳芳,肖波,李胜龙,等.黄土高原生物结皮对土壤养分的表层聚集与吸附固持效应[J].植物营养与肥料学报,2021,27(9):1592.WANG Fangfang,XIAO Bo,LI Shenglong,et al.Biocrusts increase soil organic matter and nutrients by increasing the nutrient retention ability of surface soil on the Loess Plateau[J].Journal of Plant Nutrition and Fertilizers,2021,27(9):1592.
[24]	FISK M R,POPA R,MASON O U,et al.Iron-magnesium silicate bioweathering on Earth (and Mars?)[J].Astrobiology,2006,6(1):48.
[25]	王国鹏,肖波,李胜龙,等.生物土壤结皮对风沙土和黄绵土膨胀特性的影响[J].中国沙漠,2020,40(1):97.WANG Guopeng,XIAO Bo,LI Shenglong,et al.Effects of moss-dominated biocrusts on the swelling characteristics of aeolian and loessal soil in the Chinese Loess Plateau[J].Journal of Desert Research,2020,40(1):97.
[26]	柳检,罗立强.植物对矿物的风化作用机制研究进展[J].应用与环境生物学报,2019,25(6):1503.LIU Jian,LUO Liqiang.Advances in research on the mechanism of plant-driven mineral weathering[J].Chinese Journal of Applied and Environmental Biology,2019,25(6):1503.
[27]	孙福海,肖波,李胜龙,等.黄土高原藓类生物结皮对表层土壤水分运动参数的影响[J].农业工程学报,2021,37(14):79.SUN Fuhai,XIAO Bo,LI Shenglong,et al.Effects of moss-dominated biocrusts on surface soil-water movement parameters in the Chinese Loess Plateau[J].Transactions of the CSAE,2021,37(14):79.
[28]	XIAO Bo,MA Shuang,HU Kelin.Moss biocrusts regulate surface soil thermal properties and generate buffering effects on soil temperature dynamics in dryland ecosystem[J].Geoderma,2019,351:9.
[29]	ZHANG Ruiyong,ZHANG Yutong,NEU T R,et al.Initial attachment and biofilm formation of a novel crenarchaeote on mineral sulfides[J].Advanced Materials Research,2015(1130):127.
[30]	SEIFFERT F,BANDOW N,KALBE U,et al.Laboratory tools to quantify biogenic dissolution of rocks and minerals:A model rock biofilm growing in percolation columns[J].Frontiers in Earth Science,2016,4:31.
[31]	陆现彩,屠博文,朱婷婷,等.风化过程中矿物表面微生物附着现象及意义[J].高校地质学报,2011,17(1):21.LU Xiancai,TU Bowen,ZHU Tingting,et al.Attachment of microbes on mineral surface in microbial weathering and its significance[J].Geological Journal of China Universities,2011,17(1):21.
[32]	EHRLICH H L.How microbes influence mineral growth and dissolution[J].Chemical Geology,1996,132:5.
[33]	BENNETT P C,ROGERS J R,CHOI W J,et al.Silicates,silicate weathering,and microbial ecology[J].Geomicrobiology Journal,2001,18(1):3.
[34]	BORCH T K,KRETZSCHMAR R,KAPPLER A,et al.Biogeochemical redox processes and their impact on contaminant dynamics[J].Environmental Science and Technology,2010,44(1):15.
[35]	朱永官,沈仁芳,贺纪正,等.中国土壤微生物组:进展与展望[J].中国科学院院刊,2017,32(6):554.ZHU Yongguan,SHEN Renfang,HE Jizheng,et al.China soil microbiome initiative:Progress and perspective[J].Bulletin of Chinese Academy of Sciences,2017,32(6):554.