Erosion-creep-collapse mechanism of underground soil loss for the karst rocky desertification in Chenqi village, Puding county, Guizhou, China

Wang, Jianxiu; Zou, Baoping; Yan, Long; Tang, Yiqun; Zhang, Xinbao; Yang, Ping

doi:10.1007/s12665-014-3182-0

Cited by 88 publications

(56 citation statements)

References 24 publications

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“…Furthermore, underground pores, cracks, and pipes are widely distributed in the karst area. In addition to surface loss, soil loss also occurs through karst caves, underground rivers, and other means (Peng and Wang, 2012;J. Wang et al, 2014).…”

Section: Effects Of Rocky Desertification On Soil Erosionmentioning

confidence: 99%

Soil erosion evolution and spatial correlation analysis in a typical karst geomorphology using RUSLE with GIS

et al. 2017

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Abstract. Although some scholars have studied soil erosion in karst landforms, analyses of the spatial and temporal evolution of soil erosion and correlation analyses with spatial elements have been insufficient. The lack of research has led to an inaccurate assessment of environmental effects, especially in the mountainous area of Wuling in China. Soil erosion and rocky desertification in this area influence the survival and sustainability of a population of 0.22 billion people. This paper analyzes the spatiotemporal evolution of soil erosion and explores its relationship with rocky desertification using GIS technology and the revised universal soil loss equation (RUSLE). Furthermore, this paper analyzes the relationship between soil erosion and major natural elements in southern China. The results are as follows: (1) from 2000 to 2013, the proportion of the area experiencing micro-erosion and mild erosion was at increasing risk in contrast to areas where moderate and high erosion are decreasing. The area changes in this time sequence reflect moderate to high levels of erosion tending to convert into micro-erosion and mild erosion. (2) The soil erosion area on the slope, at 15-35 • , accounted for 60.59 % of the total erosion area, and the corresponding soil erosion accounted for 40.44 %. (3) The annual erosion rate in the karst region decreased much faster than in the non-karst region. Soil erosion in all of the rock outcrop areas indicates an improving trend, and dynamic changes in soil erosion significantly differ among the various lithological distribution belts. (4) The soil erosion rate decreased in the rocky desertification regions, to below moderate levels, but increased in the severe rocky desertification areas. The temporal and spatial variations in soil erosion gradually decreased in the study area. Differences in the spatial distribution between lithology and rocky desertification induced extensive soil loss. As rocky desertification became worse, the erosion modulus decreased and the decreasing rate of annual erosion slowed.

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Section: Effects Of Rocky Desertification On Soil Erosionmentioning

confidence: 99%

Soil erosion evolution and spatial correlation analysis in a typical karst geomorphology using RUSLE with GIS

et al. 2017

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“…Carbonate rocks are widely distributed across China, covering a total area of *3,430,000 km 2 with the exposed area of the carbonate making up *13% of China's territory (Chinese Academy of Sciences 1979; Wang et al 2014). The soils that form atop carbonate bedrock tend to be thin and highly susceptible to degradation, especially through subsurface erosion in the case of karst terrain.…”

Section: Introductionmentioning

confidence: 99%

“…Karst landscapes occupy 61.9% of the 30,240 km 2 of Guizhou Province (Chen and Bi 2011) and 25.2% of the province is affected by rocky desertification (Wang et al 2014), creating serious economic and ecological problems (Huang and Cai 2007). Soil loss is the primary cause of karst rocky desertification (e.g.…”

Section: Introductionmentioning

confidence: 99%

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The importance of non-carbonate mineral weathering as a soil formation mechanism within a karst weathering profile in the SPECTRA Critical Zone Observatory, Guizhou Province, China

et al. 2017

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Soil degradation, including rocky desertification, of the karst regions in China is severe. Karst landscapes are especially sensitive to soil degradation as carbonate rocks are nutrient-poor and easily eroded. Understanding the balance between soil formation and soil erosion is critical for long-term soil sustainability, yet little is known about the initial soil forming processes on karst terrain. Herein we examine the initial weathering processes of several types of carbonate bedrock containing varying amounts of non-carbonate minerals in the SPECTRA Critical Zone Observatory, Guizhou Province, Southwest China. We compared the weathering mechanisms of the bedrock to the mass transfer of mineral nutrients in a soil profile developed on these rocks and found that soil formation and nutrient contents are strongly dependent upon the weathering of interbedded layers of more silicate-rich bedrock (marls). Atmospheric inputs from dust were also detected.

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“…With a low R L , the fine grains are also likely to move down with infiltration through the macropores between the gravels, in gentle slopes or even on flat land, leaving a layer of pure gravels advantageous for plant growth. This phenomenon of soil leakage is common in the karst regions (Wang et al, 2014). As a result, R L not only influences the current water condition of LGM, it also has a significant effect on its development.…”

Section: Using Lgm As Growth Substrate For Plantsmentioning

confidence: 99%

Revegetation in abandoned quarries with landfill stabilized waste and gravels: water dynamics and plant growth – a case study

et al. 2017

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Abstract. Large amounts of quarry wastes are produced during quarrying. Though quarry wastes are commonly used in pavement construction and concrete production, in situ utilization during ecological restoration of abandoned quarries has the advantage of simplicity. In this paper, rock fragments 2-3 cm in size were mixed with landfill stabilized waste (LSW) in different proportions (LSW : gravel, R L ), which was called LGM. The water content, runoff and plant growth under natural precipitation were monitored for 2 years using a runoff plot experiment. LGM with a low fraction of LSW was compacted to different degrees to achieve an appropriate porosity; water dynamics and plant growth of compacted LGM were studied in a field experiment. The results showed the following: (1) LGM can be used during restoration in abandoned quarries as growing material for plants. (2) R L had a significant effect on the infiltration and water-holding capacity of LGM and thus influenced the retention of precipitation, water condition and plant growth.LGM with R L ranging from 8 : 1 to 3 : 7 was suitable for plant growth, and the target species grew best when R L was 5 : 5. (3) Compaction significantly enhanced water content of LGM with a low R L of 2 : 8, but leaf water content of plants was lower or unchanged in the more compacted plots. Moderate compaction was beneficial to the survival and growth of Robinia pseudoacacia L. Platycladus orientalis (L.) Franco and Medicago sativa L. were not significantly affected by compaction, and they grew better under a high degree of compaction, which was disadvantageous for the uppermost layer of vegetation.

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Erosion-creep-collapse mechanism of underground soil loss for the karst rocky desertification in Chenqi village, Puding county, Guizhou, China

Cited by 88 publications

References 24 publications

Soil erosion evolution and spatial correlation analysis in a typical karst geomorphology using RUSLE with GIS

Soil erosion evolution and spatial correlation analysis in a typical karst geomorphology using RUSLE with GIS

The importance of non-carbonate mineral weathering as a soil formation mechanism within a karst weathering profile in the SPECTRA Critical Zone Observatory, Guizhou Province, China

Revegetation in abandoned quarries with landfill stabilized waste and gravels: water dynamics and plant growth – a case study

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