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Effects of Mining-induced Ground Fissure Development on Plant Community Structure and Species Distribution Pattern in Semi-arid Coal Mining Area, China(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2025年第04期
Page:
750-764
Research Field:
黄河流域生态保护和高质量发展专刊(下)
Publishing date:

Info

Title:
Effects of Mining-induced Ground Fissure Development on Plant Community Structure and Species Distribution Pattern in Semi-arid Coal Mining Area, China
Author(s):
DU Hua-dong1; 2; 3*; LIU Hai-yan1; BI Yin-li1; 2; SUN Hao1; WANG Wei1; TANG Xun1
(1. College of Geology and Environment, Xi'an University of Science and Technology, Xi'an 710054, Shaanxi, China; 2. Institute of Ecological Environment Restoration in Mine Areas of West China, Xi'an University of Science and Technology, Xi'an 710054, Shaanxi, China; 3. Shaanxi Provincial Key Laboratory of Geological Support for Coal Green Exploitation, Xi'an 710054, Shaanxi, China)
Keywords:
community structure;  surface subsidence;  ground fissure;  community diversity;  distribution pattern;  redundancy analysis;  vegetation restoration;  Loess Plateau
PACS:
Q948; X171.4
DOI:
10.19814/j.jese.2025.03037
Abstract:
Exploring the influence degree and range of ground fissure development on plant communities in coal mining subsidence area can provide scientific basis for the formulation of vegetation restoration strategies in mining areas. Taking the tensile ground fissures in the subsidence area of underground mining in Yushenfu mining area, the semi-arid loess gully region as the research object, the composition, stability and species distribution pattern of plant communities at the distances of 0-1, 1-2, 2-3, 3-5 and 5-10 m from the ground fissures were analyzed, and the redundancy analysis was used to explore the key soil factors affecting the plant communities in the ground fissure development area. The results show that ① after the development of ground fissures in coal mining subsidence area, the composition of plant communities at the distance of 0-2 m from the ground fissures changes from the predominance on perennial herbs before the development of ground fissure to coexistence of annual/biennial herbaceous plant and perennial grasses; the dominant plant populations are Artemisia ordosica and Lespedeza davurica in the shrub layer, and Stipa bungeana and Thymus mongolicus in the herb layer. ② Compared with the control area, Margalef richness index of plant community reduces by 60% and 50%, Shannon-Wiener diversity index reduces by 36% and 34%, Pielou evenness index reduces by 27% and 22%, and stability reduces by 82% and 66% at the distances of 0-1 and 1-2 m from the ground fissures, but there are no significant difference at the distances of 2-10 m from the ground fissures. ③ The distribution pattern of dominant plant populations at the distances of 0-2 m from the ground fissures changes from high aggregation before the development of ground fissure to medium aggregation; with the increase of horizontal distance from ground fissures, the distribution pattern gradually changes into high aggregation. ④ The key soil factors affecting plant communities at the distances of 0-2 m from the ground fissures include soil moisture content, soil bulk density, soil pH value, soil available nitrogen content and soil available phosphorus content. In general, the influence of ground fissure development on the characteristics of plant community in the subsidence area is mainly concentrated at the distances of 0-2 m from the ground fissures, which is the focus of ecological restoration and treatment in the subsidence area of the mining area; it is necessary to reconstruct the soil structure through ground fissure filling, improve the habitat by fertilization and appropriate irrigation, and improve the plant community structure by reseeding the seeds of native species to promote the recovery process of plant community. The natural regeneration of vegetation at the distances of 0-2 m from the ground fissures, can ensure the stability of plant community.

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Last Update: 2025-07-25