Mechanisms behind soil water evaporation and infiltration during long-term microbial reclamation in coal mining-induced subsidence areas in northern Shaanxi Province, China

Authors

KE Zengming, Institute of Ecological Environment Restoration in Mine Areas of West China, Xi’an University of Science and Technology, Xi’an 710054, ChinaFollow
BI Yinli, Institute of Ecological Environment Restoration in Mine Areas of West China, Xi’an University of Science and Technology, Xi’an 710054, China; State Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, China University of Mining and Technology (Beijing), Beijing 100083, ChinaFollow
YANG Wei, Institute of Ecological Environment Restoration in Mine Areas of West China, Xi’an University of Science and Technology, Xi’an 710054, China

Abstract

Background Water scarcity is identified as an important factor restricting ecological restoration in arid and semi-arid mining areas. The application of microbial reclamation technologies, especially inoculation with Arbuscular mycorrhizal fungi (AMF), has achieved encouraging ecological effects in mining areas. In this case, investigating soil water movement and its controlling factors in mining areas undergoing long-term microbial reclamation is a key scientific issue for understanding the long-term ecological restoration mechanisms of AMF. Methods This study investigated the microbial reclamation base in the coal mining-induced subsidence area of the Daliuta coal mine of northern Shaanxi Province, located in the middle reaches of the Yellow River. Specifically, it selected Amorpha fruticosa L. quadrats that experienced 10 years of AMF inoculation (AM) reclamation, reclamation without fungal inoculation (CK), and natural restoration (L-CK) each. For each treatment model, three understory coverage levels were used, i.e., high (>60%), medium (30%‒60%), and low (<30%), leading to nine experimental treatments in total. In situ monitoring experiments on soil water infiltration and evaporation processes were carried out using double-ring infiltrometers and micro-lysimeters.Results and Conclusions The AM treatment model yielded a significant reduction in soil bulk density, as well as increases in soil porosity, organic matter content, and nutrient content (P<0.05), creating favorable conditions for water transport and retention in soils. Compared to the L-CK treatment model, the AM treatment model exhibited decreases of 22.7%, 10.3%, and 1.2% in soil water evaporation and increases of 21.4%, 38.5%, and 125.9% in average soil water infiltration rate under high, medium, and low coverage, respectively (P<0.05). The equation proposed by Fang Zhengsan can effectively reflect the characteristics of soil water infiltration in the study area, with an average coefficient of determination (R²) of 0.94. The key factors influencing soil water infiltration included the organic matter content, bulk density, and total porosity of soils, while the soil water evaporation was governed by soil bulk density, Understory vegetation coverage and organic matter content. Therefore, the long-term microbial reclamation can effectively reduce soil water evaporation and increase water infiltration, enhancing both soil water retention and water-use efficiency in reclaimed areas. This technology holds great potential for long-term ecological reclamation, serving as a practical guide for the ecological reclamation efforts on the principle that water determines planting in coal mining areas within the Yellow River basin.

Keywords

Yellow River Basin, coal mining-induced subsidence area, land reclamation, Arbuscular mycorrhizal fungi (AMF), soil water infiltration, soil water evaporation

DOI

10.12363/issn.1001-1986.25.08.0622

Recommended Citation

KE Zengming, BI Yinli, YANG Wei, et al. (2025) "Mechanisms behind soil water evaporation and infiltration during long-term microbial reclamation in coal mining-induced subsidence areas in northern Shaanxi Province, China," Coal Geology & Exploration: Vol. 53: Iss. 12, Article 18.
DOI: 10.12363/issn.1001-1986.25.08.0622
Available at: https://cge.researchcommons.org/journal/vol53/iss12/18

Reference

[1] ZHANG Y，ZHAO W，SHAO M，et al. Soil water content and vegetation response to precipitation in reclaimed coal mining areas[J]. Ecological Engineering，2019，134：54−61.

[2] 刘卓昕，高鹏，穆兴民，等. 黄土区植被恢复对土壤水文物理性质的影响[J]. 水土保持研究，2023，30(6)：206−213.

LIU Zhuoxin，GAO Peng，MU Xingmin，et al. Effects of vegetation restoration on soil hydrophysical properties in loess region[J]. Research of Soil and Water Conservation，2023，30(6)：206−213.

[3] 彭苏萍，毕银丽. 黄河流域煤矿区生态环境修复关键技术与战略思考[J]. 煤炭学报，2020，45(4)：1211−1221.

PENG Suping，BI Yinli. Strategic consideration and core technology about environmental ecological restoration in coal mine areas in the Yellow River Basin of China[J]. Journal of China Coal Society，2020，45(4)：1211−1221.

[4] 孟庄涵，王玉涛，田延哲. 采煤沉陷区治理修复与开发利用关键技术进展[J]. 煤田地质与勘探，2025，53(7)：227−252.

MENG Zhuanghan，WANG Yutao，TIAN Yanzhe. Advances in key technologies for the management，restoration，development，and utilization of coal mining subsidence areas[J]. Coal Geology & Exploration，2025，53(7)：227−252.

[5] 毕银丽，郭晨，王坤. 煤矿区复垦土壤的生物改良研究进展[J]. 煤炭科学技术，2020，48(4)：52−59.

BI Yinli，GUO Chen，WANG Kun. Research progress of biological improvement of reclaimed soil in coal mining area[J]. Coal Science and Technology，2020，48(4)：52−59.

[6] YANG Xiaojiang，WANG Zhen，LI Jing，et al. How do arbuscular mycorrhizal fungi enhance drought resistance of Leymus chinensis?[J]. BMC Plant Biology，2025，25(1)：453.

[7] PAUWELS R，GRAEFE J，BITTERLICH M. An arbuscular mycorrhizal fungus alters soil water retention and hydraulic conductivity in a soil texture specific way[J]. Mycorrhiza，2023，33(3)：165−179.

[8] KAKOURIDIS A，HAGEN J A，KAN M P，et al. Routes to roots：Direct evidence of water transport by arbuscular mycorrhizal fungi to host plants[J]. New Phytologist，2022，236(1)：210−221.

[9] DAVID P，JANA R，RADKA S，et al. Soil compaction reversed the effect of arbuscular mycorrhizal fungi on soil hydraulic properties[J]. Mycorrhiza，2024，34(4)：361−368.

[10] TANG Bo，MAN Jing，LEHMANN A，et al. Arbuscular mycorrhizal fungi benefit plants in response to major global change factors[J]. Ecology Letters，2023，26(12)：2087−2097.

[11] WANG Yunqiang，SHAO Mingan，LIU Zhipeng，et al. Characteristics of dried soil layers under apple orchards of different ages and their applications in soil water managements on the loess plateau of China[J]. Pedosphere，2015，25(4)：546−554.

[12] MENG Chunlei，JIN Haidong，JIN Bo. Parameterization of soil evaporation and coupled transport of moisture and heat for arid and semiarid regions[J]. Frontiers in Earth Science，2023，11：1151405.

[13] 李多美，孔涛，陈曦，等. 半干旱区复垦煤矿不同土地利用类型对土壤结构和水力学特性的影响[J]. 煤炭科学技术，2024，52(增刊1)：312−321.

LI Duomei，KONG Tao，CHEN Xi，et al. Effects of different land use types on soil structure and hydraulic characteristics of reclaimed coal mines in semi–arid areas[J]. Coal Science and Technology，2024，52(Sup.1)：312−321.

[14] 毕银丽，杨伟，柯增鸣，等. AMF–玉米联合对“表土层–含水层–隔水层”排土场重构模式土壤水盐分布的影响[J]. 煤田地质与勘探，2023，51(4)：68−75.

BI Yinli，YANG Wei，KE Zengming，et al. Effect of AMF–maize combination on water and salt distribution in soil under the dump reconstruction mode of “topsoil–aquifer–aquitard”[J]. Coal Geology & Exploration，2023，51(4)：68−75.

[15] BI Yinli，DU Xinpeng，TIAN Lexuan，et al. Effects of an arbuscular mycorrhizal fungus on Amorpha fruticosa roots and soil preferential flow in an arid area of opencast coal mine waste[J]. Soil and Tillage Research，2025，245：106321.

[16] 毕银丽，杨伟，柯增鸣，等. 接种AMF对西部煤矿区紫穗槐根系分布和水分利用效率的影响[J]. 煤炭科学技术，2024，52(3)：311−322.

BI Yinli，YANG Wei，KE Zengming，et al. Effect of AMF inoculation on root distribution and water use efficiency of Amorpha fruticosa L in western coal mining area[J]. Coal Science and Technology，2024，52(3)：311−322.

[17] ABDALLA M，AHMED M A. Arbuscular mycorrhiza symbiosis enhances water status and soil–plant hydraulic conductance under drought[J]. Frontiers in Plant Science，2021，12：722954.

[18] MONOKROUSOS N，PAPAPTHEODOROU E，ORFANOUDAKIS M，et al. The effects of plant type，AMF inoculation and water regime on rhizosphere microbial communities[J]. European Journal of Soil Science，2020，71(2)：265−278.

[19] IUSSS Working Group WRB. World reference base for soil resources. International soil classification system for naming soils and creating legends for soil maps[M]. Vienna：LCC MAKS Press，2022.

[20] 邹慧. 神东风积沙区煤炭开采对土壤水分运移规律的影响[D]. 北京：中国矿业大学(北京)，2014.

ZOU Hui. The effect of coal mining on soil water movement in aeolian sand land of Shendong coal field[D]. Beijing：China University of Mining and Technology (Beijing)，2014.

[21] CESARO P，MASSA N，CANTAMESSA S，et al. Tomato responses to Funneliformis mosseae during the early stages of arbuscular mycorrhizal symbiosis[J]. Mycorrhiza，2020，30(5)：601−610.

[22] WU Qiangsheng，ZOU Yingning，HE Xinhua. Contributions of arbuscular mycorrhizal fungi to growth，photosynthesis，root morphology and ionic balance of citrus seedlings under salt stress[J]. Acta Physiologiae Plantarum，2010，32(2)：297−304.

[23] 国家市场监督管理总局，国家标准化管理委员会. 土壤质量 土壤硝态氮、亚硝态氮和铵态氮的测定 氯化钾溶液浸提手工分析法：GB/T 42485—2023[S]. 北京：中国标准出版社，2023.

[24] 张英杰，刘向峰，张强，等. 不同草本植物根系对土壤渗透性的影响[J]. 水土保持研究，2024，31(4)：145–152.

ZHANG Yingjie，LIU Xiangfeng ，ZHANG Qiang，et al. Influence of different herbaceous roots on soil permeability[J]. Research of Soil and Water Conservation，2024，31(4)：145–152.

[25] 杨茂进，张越，施梦璐，等. 崩岗土壤水分特征曲线与非饱和渗透系数分析[J]. 森林与环境学报，2023，43(4)：433−441.

YANG Maojin，ZHANG Yue，SHI Menglu，et al. Analysis of soil moisture characteristic curves and unsaturated permeability coefficients of Benggang soil[J]. Journal of Forest and Environment，2023，43(4)：433−441.

[26] 李超，周正朝，朱冰冰，等. 黄土丘陵区不同撂荒年限土壤入渗及抗冲性研究[J]. 水土保持学报，2017，31(2)：61−66.

LI Chao，ZHOU Zhengchao，ZHU Bingbing，et al. Research on soil infiltration capacity and soil anti–scouribility on different abandoned land in the loess hilly region[J]. Journal of Soil and Water Conservation，2017，31(2)：61−66.

[27] AUGÉ R M. Arbuscular mycorrhizae and soil/plant water relations[J]. Canadian Journal of Soil Science，2004，84(4)：373−381.

[28] WU Gaolin，LIU Yu，FANG Nufang，et al. Soil physical properties response to grassland conversion from cropland on the semi–arid area[J]. Ecohydrology，2016，9(8)：1471−1479.

[29] 肖礼. 西部微生物复垦区紫穗槐枯落物分解及有机碳累积机制[D]. 北京：中国矿业大学(北京)，2021.

XIAO Li. The mechanism of Amorpha fruticosa litter decomposition and soil organic carbon accumulation in northwest microbial reclamation area[D]. Beijing：China University of Mining & Technology (Beijing)，2021.

[30] 于东明，胡小兰，张光灿，等. 江子河小流域不同植被类型土壤粒径的多重分形特征[J]. 中国水土保持科学，2011，9(5)：79−85.

YU Dongming，HU Xiaolan，ZHANG Guangcan，et al. Multifractal analysis on soil particle size distribution for different vegetation types in Jiangzihe small watershed[J]. Science of Soil and Water Conservation，2011，9(5)：79−85.

[31] 邱德勋. 黄土丘陵区植被恢复对土壤水文特性与土壤入渗的影响[D]. 北京：中国科学院大学，2022.

QIU Dexun. Effect of vegetation restoration on soil hydrological properties and soil infiltration in loess hilly region[D]. Beijing：University of Chinese Academy of Sciences，2022.

[32] BI Yinli,XIAO Li,GUO Chen,et al. Revegetation type drives rhizosphere arbuscular mycorrhizal fungi and soil organic carbon fractions in the mining subsidence area of northwest China[J]. CATENA,2020,195:104791.

[33] BRUNDRETT M C. Understanding the roles of multifunctional mycorrhizal and endophytic fungi[M]//SCHULZ B J E，BOYLE C J C，SIEBER T N. Microbial root endophytes. Berlin：Springer，2006：281–298.

[34] 郭拿拿，黄明斌. 不同类型重构土壤水分运移特征[J]. 农业工程学报，2024，40(3)：94−102.

GUO Nana，HUANG Mingbin. Water movement characteristics of different reconstructed soils[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE)，2024，40(3)：94−102.

[35] REINSCH S，ROBINSON D A，VAN SOEST M A J，et al. Temperate soils exposed to drought：Key processes，impacts，indicators，and unknowns[J]. Land，2024，13(11)：1759.

[36] ERICE G，CANO C，BAGO A，et al. Contrasting regulation of phaseolus vulgaris root hydraulic properties under drought and saline conditions by three arbuscular mycorrhizal fungal species from soils with divergent moisture regime[J]. Journal of Soil Science and Plant Nutrition，2024，24(2)：2934−2945.

[37] 李建兴，何丙辉，谌芸. 不同护坡草本植物的根系特征及对土壤渗透性的影响[J]. 生态学报，2013，33(5)：1535−1544.

LI Jianxing，HE Binghui，CHEN Yun. Root features of typical herb plants for hillslope protection and their effects on soil infiltration[J]. Acta Ecologica Sinica，2013，33(5)：1535−1544.

[38] 李品芳，李保国. 毛乌素沙地水分蒸发和草地蒸散特征的比较研究[J]. 水利学报，2000，31(3)：24−28.

LI Pinfang，LI Baoguo. Study on some characteristics of evaporation of sand dune and evapotranspiration of grassland in Mu Us desert[J]. Journal of Hydraulic Engineering，2000，31(3)：24−28.