A Review of Land Ecological Security Evaluation in China

Li, Li; Zeng, Weizhong

doi:10.5539/jgg.v2n1p48

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…Ecological security can be defined as mankind’s security degree un-affected by ecological destruction and environmental pollution in yield, living and health, including basic element of water and food security, air quality and the green environment [ 12 ]. Land ecological security evaluation is the fundamental work in this research area, which is both the core and the foundation of the sustainable utilization of land resources [ 13 ]. Some researchers consider that LES should focus on the sustainable development promoting the harmonious unity of economy, society and natural environment.…”

Section: Introductionmentioning

confidence: 99%

Land Ecological Security Evaluation of Guangzhou, China

Yin

et al. 2014

IJERPH

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As the land ecosystem provides the necessary basic material resources for human development, land ecological security (LES) plays an increasingly important role in sustainable development. Given the degradation of land ecological security under rapid urbanization and the urgent LES requirements of urban populations, a comprehensive evaluation method, named Double Land Ecological Security (DLES), has been introduced with the city of Guangzhou, China, as a case study, which evaluates the LES in regional and unit scales for reasonable and specific urban planning. In the evaluation process with this method, we have combined the material security with the spiritual security that is inevitably associated with LES. Some new coefficients of land-security supply/demand distribution and technology contribution for LES evaluation have also been introduced for different spatial scales, including the regional and the unit scales. The results for Guangzhou indicated that, temporally, the LES supply indices were 0.77, 0.84 and 0.77 in 2000, 2006 and 2009 respectively, while LES demand indices for the city increased in 2000, 2006 and 2009 from 0.57 to 0.95, which made the LES level decreased slowly in this period. Spatially, at the regional scale, the urban land ecological security (ULES) level decreased from 0.2 (marginal security) to −0.18 (marginal insecurity) as a whole; in unit scale, areas in the north and in parts of the east were relatively secure and the security area was shrinking with time, but the central and southern areas turned to be marginal insecurity, especially in 2006 and 2009. This study proposes that DLES evaluation should be conducted for targeted and efficient urban planning and management, which can reflect the LES level of study area in general and in detail.

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Section: Introductionmentioning

confidence: 99%

Land Ecological Security Evaluation of Guangzhou, China

Yin

et al. 2014

IJERPH

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“…Their cognitive level of the surrounding environment directly affects whether they can adaptively adjust the balance between themselves and the environment to ensure the stability of the ecosystem. Therefore, it is of great reference value to explore the perception of ecological vulnerability among residents in Yushu, mainly farmers and herdsmen, for formulating reasonable plateau ecological protection policies and correctly guiding residents to optimize their production and life style [5].…”

Section: Introductionmentioning

confidence: 99%

Geoinformatics models show changes in ecological vulnerability in Yushu Tibetan Autonomous Prefecture

Teng

Luo

2023

International Conference on Geographic Information and Remote Sensing Technology (GIRST 2022)

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This study collected data related to ecological environment, society and economy in Yushu Tibetan Autonomous Prefecture from 2000 to 2015, and used ArcGIS 10.4.1 and Fragstats 4.2 software to analyze the ecological vulnerability of the area by using Principal Component Analysis (PCA). In the research process, construct a DPSIR-EES conceptual model that combines the Driver-Pressure-State-Impact-Respinse (DPSIR) model and Ecology-Economy-Social (EES), using Delphi and Analytic Hierarchy Process (AHP) analyze the changes in time and space of ecological security in Yushu area from 2000 to 2015. At the same time, questionnaire survey was used to analyze residents' cognition of ecological environment in Yushu area. Finally, the paper analyzes the changes and trends of ecological security in the "Ecology-Economy-Social" complex ecosystem formed on the basis of traditional production and lifestyle in Yushu. The results show that: 1) There are differences in the time and space dimensions of the ecological vulnerability of Yushu. In the time dimension, there is a weak trend toward both ends, and the spatial dimension shows a trend of high in the northwest, general in the middle, and low in the southeast. 2) There are differences in the spatial dimension of Yushu ecological security. The eastern region is significantly higher than the western region, showing the distribution characteristics of insecurity in the northwest, early warning in the central region, and security in the southeast. In the time dimension, the range of changes in each degree is less than 5%, and there is a bipolar development weak trend. 3) Residents in Yushu Prefecture whose main body is farmers and herdsmen have a better understanding of the overall situation of ecological security. 4) The natural climatic conditions and traditional production and lifestyles in Yushu area jointly affect the ecological security status. Ecological security conditions are poor in areas with harsh natural conditions and underdeveloped economies, while ecological security conditions in areas with relatively superior natural and economic conditions are relatively good.

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A Review of Land Ecological Security Evaluation in China

Cited by 2 publications

References 5 publications

Land Ecological Security Evaluation of Guangzhou, China

Land Ecological Security Evaluation of Guangzhou, China

Geoinformatics models show changes in ecological vulnerability in Yushu Tibetan Autonomous Prefecture

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