Evaluation of the eco-geo-environment in the Qaidam Basin, China

Lan, Li; Ni, Wankui; Cheng, Yanling; Wang, Haiman; Yuan, Kangze; Zhou, Baoxue

doi:10.1007/s12665-020-09312-9

Cited by 5 publications

(1 citation statement)

References 60 publications

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“…As a key component of terrestrial ecosystems, vegetation plays a major role in improving carbon sequestration, soil conservation, and flood mitigation (Deng et al, 2019; Feng et al, 2016; Peng et al, 2016). To protect and improve the ecology of northern China, the Chinese government has launched several revegetation projects, such as the Grain for Green programme, Three‐North Shelterbelt, and Closure of Mountains to Protect Vegetation projects (Deng et al, 2019; Geng et al, 2020; Li et al, 2021; Shao et al, 2019). The survival of newly planted vegetation in seasonally dry climates such as northern China is known to be strongly influenced by the hydrological cycle.…”

Section: Introductionmentioning

confidence: 99%

Impact of increasing vegetation coverage on gaining and losing streams in an arid endorheic river watershed

Jin,

Mao

et al. 2023

Hydrological Processes

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To improve the ecology in northern China, the Chinese government has launched a series of revegetation projects. However, the impact of increasing vegetation coverage on gaining and losing streams remains largely unexplored, particularly in arid endorheic watersheds with frequent exchanges of water and other materials between surface water and groundwater. To address this, we modified the vegetation growth module of the soil and water assessment tool (SWAT) to simulate the vegetation coverage change proposed for the middle and lower reaches of the Bayin River. We then coupled the modified SWAT to a modular finite‐difference groundwater flow model to simulate the surface and subsurface water exchange. Hydrological, meteorological, and hydrogeological observation data were then used to build and calibrate the coupled model for the period 2001–2019. We set two vegetation coverage scenarios (non‐revegetation and vegetation) and two irrigation variants (non‐irrigation and irrigation) to investigate the impact of changes in vegetation coverage and the related irrigation variant on gaining and losing streams. The results showed that the vegetated land area and annual leaf area index both increased significantly between 2019 and 2001. The groundwater discharge to the gaining streams was more strongly affected by revegetation and related irrigation than the groundwater recharge from the losing streams. Irrigation related to revegetation emphasizes the effect of revegetation on streamflow. We suggest that in arid endorheic river basins, because of the related irrigation, revegetation has a substantial impact on groundwater level and streamflow, which is mainly composed of baseflow. Therefore, the irrigation efficiency of newly planted vegetation must be improved to stabilize the groundwater level and related ecological conditions.

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Section: Introductionmentioning

confidence: 99%

Impact of increasing vegetation coverage on gaining and losing streams in an arid endorheic river watershed

Jin,

Mao

et al. 2023

Hydrological Processes

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Information entropy and elasticity analysis of the land use structure change influencing eco-environmental quality in Qinghai-Tibet Plateau from 1990 to 2015

Zhang

2022

Environ Sci Pollut Res

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Developing a system for comprehensive regional Eco-environmental quality assessment in mountainous areas—A case study of Western Sichuan, China

Chen

Chen²,

He³

et al. 2022

Front. Environ. Sci.

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Eco-environmental quality assessment is an important process for ensuring sustainable regional development because it encourages the construction of an ecological civilization. This assessment also lays a foundation for informing digital management and decision-making for the ecological environment in the near future. Due to the particularity of mountainous areas, its Eco-environmental quality assessment needs to be deeply specific and may require re-working. Here, the AHP-Entropy model was developed and constructed to scientifically analyze and evaluate the Eco-environmental quality in mountainous Western Sichuan in 2009 and 2019 at the township (street) unit. It is based on indicators representing Biological richness, Vegetation cover, Water network density, Land stress, and Social-economic stress. This newly developed model offers a more complete assessment, is based on more easily acquired data and has a higher accuracy than past models. The Eco-environmental quality index (EQI) representing eco-environmental quality (EEQ) has five levels of rating: Better, Good, Moderate, Bad and Worse. After applying this model to the region, the results show that: 1) The ecological environmental quality in the Western Sichuan mountains has improved over the past 10 years. 2) The eco-environment in the study area is generally Good, with small areas receiving a rating of Moderate. 3) The areas considered Better are mainly distributed on Longmen Mountain, Daliang mountain and Qionglai mountain, while the Moderate areas are mainly distributed in the western Chengdu Plain, the Panzhihua urban area, and Shaluli mountain. 4) The areas rated Better earn their rating due to high vegetation coverage, high habitat quality, and low degree of land degradation, such as land desertification and soil erosion. The areas with moderate eco-environmental quality were mainly affected by frequent human activity or serious land degradation. This comprehensive regional Eco-environmental quality assessment can also be used in other areas with mountains.

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Evaluation of the eco-geo-environment in the Qaidam Basin, China

Cited by 5 publications

References 60 publications

Impact of increasing vegetation coverage on gaining and losing streams in an arid endorheic river watershed

Impact of increasing vegetation coverage on gaining and losing streams in an arid endorheic river watershed

Information entropy and elasticity analysis of the land use structure change influencing eco-environmental quality in Qinghai-Tibet Plateau from 1990 to 2015

Developing a system for comprehensive regional Eco-environmental quality assessment in mountainous areas—A case study of Western Sichuan, China

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