Landscape dynamics facilitated non-point source pollution control and regional water security of the Three Gorges Reservoir area, China

Huang, Chunbo; Zhao, Dengyue; Fan, Xiaolong; Liu, Chao; Zhao, Guosong

doi:10.1016/j.eiar.2021.106696

Cited by 32 publications

(15 citation statements)

References 60 publications

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“…Li, Bing, et al, 2019). This project not only benefits the TG reservoir with flood control, power generation, navigation, and water supply (Huang et al, 2019;Huang, Zhao, Fan, et al, 2022), but also the regional economy (Bieger et al, 2015). On the one hand, the population explosion increased the demands for agricultural products and floor space, stimulating industrial development (Bieger et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Since the construction and operation of the Three Gorges (TG) dam, it has raised worldwide academic debate due to its combined social and economic benefits of the project, as well as its potential ecological impacts on the surrounding environment (e.g., Huang, Zhao, & Deng, 2022; S. Li, Bing, et al, 2019). This project not only benefits the TG reservoir with flood control, power generation, navigation, and water supply (Huang et al, 2019; Huang, Zhao, Fan, et al, 2022), but also the regional economy (Bieger et al, 2015). On the one hand, the population explosion increased the demands for agricultural products and floor space, stimulating industrial development (Bieger et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Impacts of environmental and socioeconomic factors on gross ecosystem product of the Three Gorges reservoir area, China

Cheng,

Liu,

Huang

et al. 2024

Land Degrad Dev

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Environmental and socioeconomic drivers would alter landscapes, bringing various effects with different directions and magnitudes. Demonstrating these driving effects is key to relieving the conflicts between territorial vegetation restoration and regional economic growth. However, the relationship between ecological protection and economic development due to landscape dynamics has not been systematically demonstrated as environment is difficult to quantify by the monetary value. In this article, we explored the changes in gross ecosystem product (GEP) in the Three Gorges (TG) reservoir area and constructed a conceptual framework to explicate its driving mechanism. Our results suggested that topographic, soil, and climatic factors positively impact on GEP through their important effects on vegetation structure, distribution, and succession. Additionally, reforestation policies promote the conversion of farmland and grassland to forestland in the TG reservoir region, which was the main contributor to enhancing GEP. Conversely, socioeconomic factors negatively impact GEP, of which effects were mainly manifested by changes in the proportion of ecological land. Therefore, it is essential to maintain a suitable land use proportion in this region to optimize GEP, and we proposed a landscape restoration program to enhance four ecosystem productions. This article provides a reference for land resource allocation for environmental protection and sustainable development in ecologically fragile areas.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impacts of environmental and socioeconomic factors on gross ecosystem product of the Three Gorges reservoir area, China

Cheng,

Liu,

Huang

et al. 2024

Land Degrad Dev

Self Cite

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“…Existing research has mainly focused on the ecological barrier of the Qinghai–Tibet Plateau, as the “third pole of the Earth”. As an important area for Chinese characteristic culture protection, few people have paid attention to the landscape distribution characteristics of residential areas; however, it is very clear that landscape planning can contribute to both landscape aesthetics and ecosystem services [ 37 ]. Moreover, the Qinghai–Tibet Plateau is an area with a vulnerable ecological environment.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Landscape Characteristics and Influencing Factors of Residential Areas on the Qinghai–Tibet Plateau: A Case Study of Tibet, China

Niu

Wang

Qiao

et al. 2022

IJERPH

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The Qinghai–Tibet Plateau is the largest ecological barrier and one of the most vulnerable areas of the ecological environmental system. However, the increasing frequency of human activities in the Qinghai–Tibet Plateau has led to strong interference. Residential areas are the main places in which human activities are carried out and, as such, can effectively reflect the intensity of activities. Based on this, this research takes the Tibet Autonomous Region as the study area and analyzes the distribution characteristics of Tibetan residential areas using Zipf’s law and various landscape indices, as well as discussing the influences of altitude, hydrology, ecological environment, and location on residential area distribution. The obtained results indicate the following: (1) The residential areas in Tibet basically conform to the rank–size principle. The residential areas in central and northwest Tibet are concentrated in size distribution, and the relatively large residential areas are prominent, while the residential areas in the eastern Hengduan mountain region are relatively balanced in size distribution. (2) The landscape index results demonstrate that the counties with an unbalanced distribution of residential areas are mainly concentrated in the northwest of Tibet, while the residential areas in the counties and regions where the administrative stations of each prefecture-level city (or region) are located tend to present a polarization phenomenon, with large patches. The area distribution of residential areas showed a “medium–high–low” pattern from southeast to northwest. The residential areas in eastern Tibet have a high degree of fragmentation and a low degree of aggregation, while the residential areas in northwest Tibet have a low degree of fragmentation and a relatively high degree of aggregation. (3) The residential areas in Tibet are most concentrated in the altitude range of 3000–5000 m above sea level and their water affinity and road–affinity are strong, with the distribution of residential areas within 500 m of roads and water networks accounting for more than one-quarter. The vegetation coverage in the residential areas is low, inconsistent with the surface vegetation coverage rate over the whole of Tibet.

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“…However, existing studies [ 8 , 19 , 20 ] have proved that China’s population urbanization lags behind land urbanization which has brought some problems such as rural hollowing, the further increase of the urban–rural gap, the abandonment of arable land, etc. Meanwhile, the increasingly prominent human–land conflicts brought by rapid urbanization have been manifested in many aspects, such as increased soil erosion [ 21 ], decreased soil fertility [ 22 ], reduced cropland area [ 16 ], accelerated degradation of ecosystem functions [ 23 ], etc. The spatio–temporal relationship between population and construction land connects the social and physical aspects of urbanization, and determines how urbanization interacts with many environmental changes [ 24 , 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Spatio–Temporal Heterogeneity of Urban Expansion and Population Growth in China

Liu

Liao

Liang

et al. 2021

IJERPH

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Urbanization has become one of the hot issues of global sustainable development, and is mainly characterized by urban population growth and construction land expansion. However, the inharmonious development of urban expansion and population migration has brought serious challenges to urban planning and management. China is the largest developing country in the world, and the urbanization process has accelerated over the past decades. In this paper, decoupling analysis was used to demonstrate the spatio–temporal relationship between urban expansion and population growth in 321 prefecture–level cities in China, providing a reference basis for sustainable development. The results showed that China’s population, total GDP, and construction land area increased from 1990 to 2018. The rate of construction land expansion was larger in the eastern coastal and western regions than in the northeastern and central regions, but the population growth rate was not significantly different among these regions. According to the decoupling analysis, the relationships of population–GDP, construction land–GDP, and population–construction land were mainly weak decoupling, indicating that both the population growth and the construction land expansion lagged behind the economic development, and the population growth lagged behind construction land expansion. In addition, the results were analyzed based on China’s four economic regions. Population and construction land area changes in the northeastern provinces experienced a shift from weak decoupling to expansive negative decoupling, then presented a strong decoupling. The decoupling state of population–construction land in the west region was relatively stable. The relationship between population and construction land in the central regions was mainly weak decoupling, and some cities developed into strong decoupling. The relationship between population and construction land in the east region experienced a shift from strong decoupling to weak decoupling, then demonstrated expansive negative decoupling, mainly manifested in the Beijing–Tianjin–Hebei, Yangtze River Delta, and Pearl River Delta urban agglomerations. Therefore, the northeast region should take measures to promote regional population growth while reasonably controlling the expansion of construction land, the west region should focus on ecological protection and moderately attract population, the central region should control their population development and reasonably allocate land, and the east region should pay attention to and solve the citizenship problem of migrant workers in second–tier and third–tier cities when promoting new urbanization.

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Landscape dynamics facilitated non-point source pollution control and regional water security of the Three Gorges Reservoir area, China

Cited by 32 publications

References 60 publications

Impacts of environmental and socioeconomic factors on gross ecosystem product of the Three Gorges reservoir area, China

Impacts of environmental and socioeconomic factors on gross ecosystem product of the Three Gorges reservoir area, China

Analysis of Landscape Characteristics and Influencing Factors of Residential Areas on the Qinghai–Tibet Plateau: A Case Study of Tibet, China

Spatio–Temporal Heterogeneity of Urban Expansion and Population Growth in China

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