The dissolution mechanism and karst development of carbonate rocks in karst rocky desertification area of Zhenfeng–Guanling–Huajiang County, Guizhou, China

Bai, You’en; Liu, Qi; Gu, Zhanfei; Lu, Yi; Sheng, Zhuping

doi:10.1007/s13146-017-0386-x

Cited by 15 publications

(7 citation statements)

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“…Bashan village, under the jurisdiction of Huajiang town, Guanling county, Guizhou province, China (Figure 1), with a coverage area of 800 hm 2 , a total cultivated area of 466.7 hm 2 , and a permanent resident population of 1,278 of 296 households in 2020. Located in a typical Karst plateau gorge area, the village is a medium—high rocky desertification area (Bai et al., 2017; Ren et al., 2020). With the Karst area accounting for 87.92% of the total area, the village has an average elevation of 1,300 m, and the valley bottom, 1,000 m away from the valley top, embraces the Beipanjiang River, with a high exposure rate of bedrocks, a fragmented terrain, and strongly developed rocky desertification.…”

Section: Methodsmentioning

confidence: 99%

Revitalization mechanism of specialty industries in the karst rocky desertification areas: From a perspective of the actor‐network theory

2022

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Despite the considerable constraints of karst rocky desertification on the production and life of the locals and the regional economy, few studies have been conducted on areas with karst rocky desertification with the aim of exploring the balance between ecological governance and industrial development. In light of the promotion of featured advantageous industries to ecological governance and industrial development, this study aims to explore the mechanism of industrial revitalization in areas with karst rocky desertification to provide theoretical support for their industrial revitalization. Based on actor-network theory, this paper presents a case study of Bashan village, a typical area in Guizhou province, China, with karst rocky desertification, to clarify the course of development of its Zanthoxylum bungeanum industry and propose a mechanism for its revitalization. The findings identify the main actors of the revitalization of the Z. bungeanum industry and reveal the driving forces behind it. Moreover, the study found that the industrial revitalization model is a bottom-up process, which suggests strong endogenous dynamics. Through the revitalization of the featured industries, the results of the management of rocky desertification are transformed into economic output, which improved the livelihood of farmers and consolidated the effectiveness of management.

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Section: Methodsmentioning

confidence: 99%

Revitalization mechanism of specialty industries in the karst rocky desertification areas: From a perspective of the actor‐network theory

2022

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“…The dissolution and karst features of carbonate rocks are closely related to their geological structures, hydrogeological conditions, and lithologies. Chemical composition, mineral composition, pore structure, and particle characteristics have certain influences on dissolution (Bai et al 2019). The dissolution rate of carbonate is positively proportional to the calcite content, while it decreases with increasing dolomite content (Bai et al 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Chemical composition, mineral composition, pore structure, and particle characteristics have certain influences on dissolution (Bai et al 2019). The dissolution rate of carbonate is positively proportional to the calcite content, while it decreases with increasing dolomite content (Bai et al 2019). Limestone rock is more susceptible to acid dissolution than lime dolomite rock under the same acidification conditions (Zhang et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Study on the mechanical and damage properties of laminated limestone under acid mine drainage dissolution

Ding,

Zuo,

2024

Geomech. Geophys. Geo-energ. Geo-resour.

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To explore the chemical and mechanical effects of acid mine drainage on water and rock, acid mine drainage (AMD) dissolution tests, triaxial compression tests, and acoustic emission tests were performed on limestone rock samples with different bedding dip angles. Combined with scanning electron microscopy and nuclear magnetic resonance analyses, the changes in the internal pores and surface morphologies of the rock samples before and after dissolution were analyzed. The results were as follows. (1) AMD dissolution mainly occurred in the shallow surfaces and bedding planes of the limestone samples. During dissolution, the shape of the matrix crystal disappeared to form small pores, and residual substances appeared during the dissolution of the bedding plane. These small pores were prone to the creation of large honeycomb-like dissolved pores. (2) With increasing bedding plane angle, the compressive strengths and elastic moduli of the limestone samples exhibited V-shaped distributions. Additional branch cracks were derived from the limestone samples after dissolution, and dissolution reduced the mechanical strength of the limestone by decreasing the crack initiation stress and damage stress. (3) With increasing bedding dip angle, the uniaxial failure modes of the rock samples changed from matrix tensile failure and shear failure along the bedding plane to plane tensile failure. After dissolution, the limestone matrix was prone to cracking and spalling along the surface of the sample. (4) There were differences in the triaxial compression failure modes between the dissolved limestone and the undissolved limestone. When α = 0° or 90°, the limestone samples formed additional branch fissures after dissolution. When α = 45°, the formation of penetrating cracks along the bedding plane was obviously controlled by the bedding plane. (5) A chemical–mechanical damage model was established and modified by the compression coefficient K, which could effectively reflect the deformation of the dissolved rock sample during loading.

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“…Meanwhile, the dissolution kinetics of carbonate rock is usually much faster and less affected by climate or terrain (Liu et al, 2019; Tipper et al, 2006). Carbonates such as calcite dissolve at a rate several orders of magnitude faster than silicates such as plagioclase (Blum & Stillings, 1995; Chou et al, 1989; Fields & Dethier, 2019), thus small amounts of calcite in stratum can dominate the fluxes of Ca 2+ and Sr 2+ in streamflow (Blum et al, 1998; Chamberlain et al, 2005; Sun et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Chemical weathering and CO₂ consumption in the glaciated Karuxung River catchment, Tibetan Plateau

Zhang

Xiao

Wang

et al. 2021

Hydrological Processes

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Climate factors play critical roles in controlling chemical weathering, while chemically weathered surface material can regulate climate change. To estimate global chemical weathering fluxes and CO 2 balance, it is important to identify the characteristics and driving factors of chemical weathering and CO 2 consumption on the Tibetan Plateau, especially in glaciated catchments. The analysis of the hydro-geochemical data indicated that silicate weathering in this area was inhibited by low temperatures, while carbonate weathering was promoted by the abundant clastic rocks with fresh surfaces produced by glacial action. Carbonate weathering dominated the riverine solute generation (with a contribution of 58%, 51%, and 43% at the QiangYong Glacier (QYG), the WengGuo Hydrological Station (WGHS), and the lake estuary (LE), respectively). The oxidation of pyrite contributed to 35%, 42%, and 30% of the riverine solutes, while silicate weathering contributed to 5%, 6%, and 26% of the riverine solutes at the QYG, WGHS, and LE, respectively. The alluvial deposit of easily weathering fine silicate minerals, the higher air temperature, plant density, and soil thickness at the downstream LE in comparison to upstream and midstream may lead to longer contact time between pore water and mineral materials, thus enhancing the silicate weathering. Because of the involvement of sulfuric acid produced by the oxidation of pyrite, carbonate weathering in the upstream and midstream did not consume atmospheric CO 2 , resulting in the high rate of carbonate weathering (73.9 and 75.6 t km À2 yr À1 , respectively, in maximum) and potential net release of CO 2 (with an upper constraint of 35.6 and 35.2 t km À2 yr À1 , respectively) at the QYG and WGHS. The above results indicate the potential of the glaciated area of the Tibetan Plateau with pyrite deposits being a substantial natural carbon source, which deserves further investigation. K E Y W O R D S chemical weathering, CO 2 consumption, glaciated catchments, pyrite oxidation, Tibetan Plateau 1 | INTRODUCTION Climate factors such as air temperature and precipitation play critical roles in controlling chemical weathering, while the mineral byproducts from the chemical weathering of surface material can regulate climate change (Berner et al., 2003;Godsey et al., 2019). Chemical weathering and climate warming are coupled via a potential negative feedback process-that is, mineral dissolution and chemical weathering of rocks

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The dissolution mechanism and karst development of carbonate rocks in karst rocky desertification area of Zhenfeng–Guanling–Huajiang County, Guizhou, China

Cited by 15 publications

References 1 publication

Revitalization mechanism of specialty industries in the karst rocky desertification areas: From a perspective of the actor‐network theory

Revitalization mechanism of specialty industries in the karst rocky desertification areas: From a perspective of the actor‐network theory

Study on the mechanical and damage properties of laminated limestone under acid mine drainage dissolution

Chemical weathering and CO₂ consumption in the glaciated Karuxung River catchment, Tibetan Plateau

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The dissolution mechanism and karst development of carbonate rocks in karst rocky desertification area of Zhenfeng–Guanling–Huajiang County, Guizhou, China

Cited by 15 publications

References 1 publication

Revitalization mechanism of specialty industries in the karst rocky desertification areas: From a perspective of the actor‐network theory

Revitalization mechanism of specialty industries in the karst rocky desertification areas: From a perspective of the actor‐network theory

Study on the mechanical and damage properties of laminated limestone under acid mine drainage dissolution

Chemical weathering and CO2 consumption in the glaciated Karuxung River catchment, Tibetan Plateau

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Chemical weathering and CO₂ consumption in the glaciated Karuxung River catchment, Tibetan Plateau