scholarly journals Spatiotemporal variation of ecological carrying capacity in Dongliao River Basin, China

2022 ◽  
Vol 135 ◽  
pp. 108548
Author(s):  
Aoyang Wang ◽  
Xiaoyu Liao ◽  
Zhijun Tong ◽  
Walian Du ◽  
Jiquan Zhang ◽  
...  
Keyword(s):  
River Basin ◽  
Carrying Capacity ◽  
Spatiotemporal Variation ◽  
Ecological Carrying Capacity

Assessment of ecological carrying capacity of Sparus macrocephalus in Daya Bay based on an ecopath model

2019 ◽  
Vol 26 (1) ◽  
pp. 1
Author(s):  
Mengyi HUANG ◽  
Shannan XU ◽  
Yong LIU ◽  
Yayuan XIAO ◽  
Teng WANG ◽  
...  
Keyword(s):  
Carrying Capacity ◽  
Daya Bay ◽  
Ecological Carrying Capacity ◽  
Ecopath Model ◽  
Sparus Macrocephalus

Assessing water resources carrying capacity based on integrated system dynamics modeling in a semiarid river basin of northern China

2014 ◽  
Vol 14 (6) ◽  
pp. 1057-1066 ◽  
Author(s):  
Ying Xie ◽  
Xuyong Li ◽  
Chunsheng Yang ◽  
Yang Yu
Keyword(s):  
Economic Growth ◽  
System Dynamics ◽  
River Basin ◽  
Carrying Capacity ◽  
Northern China ◽  
Water Shortage ◽  
Integrated System ◽  
Dynamics Modeling ◽  
Water Resources Carrying Capacity ◽  
Optimized Allocation

Water shortage is a major problem in northern China, because of a huge population and rapid economic growth. Taking the Luanhe River Basin (LRB) as a study area, we set up a System Dynamics (SD) model of the basin for the period 2005–2010, and considered various important socioeconomic and environmental factors and their correlation. Significant trends for the period 2011–2030 were simulated and the water resource carrying capacity (WRCC) of the LRB and its trends over the next 30 years were analyzed. The results indicate a decreasing trend of WRCC in the basin and that current economic growth is not sustainable. The study investigated possible optimized allocation projects. The most apt project would involve a combination of strategies that could considerably increase the WRCC, reduce demand, and improve water quality.

Application of Modified Ecological Footprint Model: A Case Study of Tibet, China

2013 ◽  
Vol 295-298 ◽  
pp. 987-991
Author(s):  
Guan Nan Cui ◽  
Xuan Wang
Keyword(s):  
Economic System ◽  
Carrying Capacity ◽  
Ecological Footprint ◽  
System Development ◽  
Energy Resources ◽  
Emergy Analysis ◽  
Development Index ◽  
Footprint Model ◽  
Ecological Carrying Capacity

To improve the ecological footprint model in aspect of reflecting sustainability of the economic, social and technological, the emergy analysis and socio-economic system development index were introduced into the model. The modified ecological footprint model was applied in the calculation of ecological carrying capacity and ecological footprint in Tibet, China. The ecological carrying capacity/cap is 19.13hm2, and the ecological footprint/cap is 8.96hm2. The result shows that the Tibet region is under the condition of ecological surplus and it is suitable for further programs development to some extent. But the high proportion of energy resources, cement and fertilizer utility should draw attention during the exploitation or construction progress.

scholarly journals Spatial Pattern Analysis of a Water-Related Ecosystem Service and Evaluation of the Grassland-Carrying Capacity of the Heihe River Basin under Land Use Change

Water ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 2658
Author(s):  
Rui Luo ◽  
Shiliang Yang ◽  
Yang Zhou ◽  
Pengqun Gao ◽  
Tianming Zhang
Keyword(s):  
Land Use ◽  
Ecosystem Services ◽  
Land Use Change ◽  
River Basin ◽  
Carrying Capacity ◽  
Animal Husbandry ◽  
Heihe River Basin ◽  
Heihe River ◽  
The Impact ◽  
The Heihe River Basin

A key challenge to the sustainability and security of grassland capacity is the protection of water-related ecosystem services (WESs). With the change of land use, the supply of aquatic ecosystem services has changed, and the grassland-carrying capacity has been affected. However, the correlation mechanism between WESs and the grassland-carrying capacity is not clear. In this study, we used the InVEST(Integrated Valuation of Ecosystem Services and Tradeoffs) model to evaluate the impact of land-use change on WESs, and made a tradeoff analysis between WESs and grassland-carrying capacity. Considering that the Heihe River Basin (HRB) was an important grassland vegetation zone, which was a milestone for the development of animal husbandry in China, HRB was taken as a case. The main findings are as follows: (1) the spatial distribution of WESs shows the dissimilation rule, the upper reaches are the main water yield area, the soil retention is weakening in the middle and lower reaches, and the pollution has further increased in the middle and upper reaches. (2) The carrying capacity of animal husbandry decreased in the upper reaches, increased in Shandan County and Zhangye City in the middle reaches, and decreased sharply in other regions. (3) There was a positive correlation between the livestock-carrying capacity and nitrogen export in 2018, which was increasing. As the change of land use has changed the evapotranspiration structure, WESs have undergone irreversible changes. Meanwhile, the development of large-scale irrigated farmland and human activities would be the source of a further intensification of regional soil erosion and water pollution. Therefore, it is necessary to trade off the WESs and animal husbandry under land-use change. This paper revealed how WESs changed from 2000 to 2018, the characteristics of the changes in the spatial and temporal distribution, and the carrying capacity. It aims to provide a scientific basis for coordinating the contradiction between grassland and livestock resources, improving the regional ecological security situation, and carrying out ecosystem management.

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