Major problems and solutions on surface water resource utilisation in karst mountainous areas

Qin, Luoyi; Bai, Xiaoyong; Wang, Shijie; Zhou, Dong; Li, Yue; Peng, Tao; Tian, Yuan; Luo, Geping

doi:10.1016/j.agwat.2015.05.024

Cited by 48 publications

(18 citation statements)

References 28 publications

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“…In terms of the special geological environment of the study area, the karst area had a vulnerable calcium environment 27 . Barren and shallow soil leads to low vegetation coverage 28 , and the infiltration of surface water, water loss 29,30 , human disturbance and destruction cause serious soil erosion 31 , thus resulting in the exposure of bare rocks and rocky desertification 32,33 . Therefore, the specific heat capacity of the surface substances and the thermal inertia were small.…”

Section: Discussionmentioning

confidence: 99%

Relationship among land surface temperature and LUCC, NDVI in typical karst area

Deng

Wang

Bai

et al. 2018

Sci Rep

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225

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Land surface temperature (LST) can reflect the land surface water-heat exchange process comprehensively, which is considerably significant to the study of environmental change. However, research about LST in karst mountain areas with complex topography is scarce. Therefore, we retrieved the LST in a karst mountain area from Landsat 8 data and explored its relationships with LUCC and NDVI. The results showed that LST of the study area was noticeably affected by altitude and underlying surface type. In summer, abnormal high-temperature zones were observed in the study area, perhaps due to karst rocky desertification. LSTs among different land use types significantly differed with the highest in construction land and the lowest in woodland. The spatial distributions of NDVI and LST exhibited opposite patterns. Under the spatial combination of different land use types, the LST–NDVI feature space showed an obtuse-angled triangle shape and showed a negative linear correlation after removing water body data. In summary, the LST can be retrieved well by the atmospheric correction model from Landsat 8 data. Moreover, the LST of the karst mountain area is controlled by altitude, underlying surface type and aspect. This study provides a reference for land use planning, ecological environment restoration in karst areas.

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Section: Discussionmentioning

confidence: 99%

Relationship among land surface temperature and LUCC, NDVI in typical karst area

Deng

Wang

Bai

et al. 2018

Sci Rep

Self Cite

225

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“…Intensive planting can improve the efficiency of orchard management within the region and thus improve provisioning services. In the karst areas, it has been reported that different tillage patterns can be used to optimize the performance of ESs for different crops, such as crop rotation and no-till sowing, which can improve the provisioning services of corn [48,49].…”

Section: Discussionmentioning

confidence: 99%

Evaluation and Tradeoff Analysis of Ecosystem Service for Typical Land-Use Patterns in the Karst Region of Southwest China

Zou

Zeng

Wang

et al. 2020

Forests

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Although many land-use patterns have been established to restore vegetation and eliminate poverty in the karst area in southwest China, the ecosystem services (ESs) of these patterns are still not fully understood. To compare the differences in seven typical monoculture patterns and three agroforestry patterns, their ESs and tradeoffs were analyzed within the Millennium Ecosystem Assessment Framework. Compared with the local traditional corn pattern, the marigold pattern improved provisioning, regulating, and cultural services by >100%. The pomegranate pattern provided far more provisioning services than the other patterns. The apple + soybean intercropping pattern reduced regulating services, and eventually, its Total ESs (TES) and ecosystem multifunctionality index (EMF) also decreased. Cultural services will be enhanced by the introduction of fruit trees, as well as intercropping. Orange + peach had the greatest negative tradeoffs between provisioning and regulating services (P-R), provisioning and supporting services (P-S), and provisioning and cultural services (P-C), which indicates that the provisioning services urgently require improvement. Peach + pumpkin intercropping decreased the negative tradeoffs of P-R, P-S, and P-C (all > 10%), while pomegranate + grass intercropping increased the negative tradeoffs of R-S and R-C (all > 100%). Our results suggest that all six of these patterns are worthy of promotion but the pomegranate pattern should be given priority. Among the three intercropping patterns studied herein, the apple + soybean pattern should be redesigned to improve performance.

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“…The objective of "water conservation" in the field of water and soil conservation is to protect green water resources [11]. In karst regions, the unique karst geological structures of the area result in considerable soil and water loss [12,13] because karst limestone facilitates leakage and erosion, allowing precipitation to escape in the form of leakage (blue water) through its underground drainage system [14][15][16], which is the main cause of local shortages of surface water [17,18]. Specific to degraded karst areas where rocky desertification is generally distributed [19], the degradation of vegetation and thin soil cover further increase precipitation leakage.…”

Section: Introductionmentioning

confidence: 99%

“…Many researchers believe that the shortage of surface water in degraded karst areas is an engineering problem that can be overcome by constructions, such as precipitation collection projects, or the extraction of water from subterranean rivers and underground reservoirs [14,[30][31][32]. However, experience has shown that the construction of water storage engineering projects in karst areas is very expensive [14,33], and the permeability of the limestone makes the selection of appropriate engineering sites a huge problem [34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Conversion of Blue Water into Green Water for Improving Utilization Ratio of Water Resources in Degraded Karst Areas

Chen

Yang

Zhao

et al. 2016

Water

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Vegetation deterioration and soil loss are the main causes of more precipitation leakages and surface water shortages in degraded karst areas. In order to improve the utilization of water resources in such regions, water storage engineering has been considered; however, site selection and cost associated with the special karstic geological structure have made this difficult. According to the principle of the Soil Plant Atmosphere Continuum, increasing both vegetation cover and soil thickness would change water cycle process, resulting in a transformation from leaked blue water (liquid form) into green water (gas or saturated water form) for terrestrial plant ecosystems, thereby improving the utilization of water resources. Using the Soil Vegetation Atmosphere Transfer model and the geographical distributed approach, this study simulated the conversion from leaked blue water (leakage) into green water in the environs of Guiyang, a typical degraded karst area. The primary results were as follows: (1) Green water in the area accounted for <50% of precipitation, well below the world average of 65%; (2) Vegetation growth played an important role in converting leakage into green water; however, once it increased to 56%, its contribution to reducing leakage decreased sharply; (3) Increasing soil thickness by 20 cm converted the leakage considerably. The order of leakage reduction under different precipitation scenarios was dry year > normal year > rainy year. Thus, increased soil thickness was shown effective in improving the utilization ratio of water resources and in raising the amount of plant ecological water use; (4) The transformation of blue water into green water, which avoids constructions of hydraulic engineering, could provide an alternative solution for the improvement of the utilization of water resources in degraded karst area. Although there are inevitable uncertainties in simulation process, it has important significance for overcoming similar problems.

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Major problems and solutions on surface water resource utilisation in karst mountainous areas

Cited by 48 publications

References 28 publications

Relationship among land surface temperature and LUCC, NDVI in typical karst area

Relationship among land surface temperature and LUCC, NDVI in typical karst area

Evaluation and Tradeoff Analysis of Ecosystem Service for Typical Land-Use Patterns in the Karst Region of Southwest China

Conversion of Blue Water into Green Water for Improving Utilization Ratio of Water Resources in Degraded Karst Areas

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