Land Use Change and Its Impact on Ecological Risk in the Huaihe River Eco-Economic Belt

Among the world’s most important three chief black lands, China’s northeast region is a vital hub for the commercial extraction of grain, undertaking the task of grain reserves and special transfers. Utilizing the provincial data of the three northeastern provinces from 2010 to 2021, and using existing documents and records as essential elements, we structured a land security appraisal system with five criterion layers and 21 indicator layers of pressure, state, impact, response, and management. The three provinces in the northeast were evaluated for the security of their land resources using the entropy-dependent weight-TOPSIS pattern. The study findings indicate that: (1) In general, land resource security of the three northeastern provinces shows a pattern of decline followed by a gradual increase from 2012 to 2021, and there is a steady improvement in the level of land’s ecological stability; (2) There are differences in the ecological stability of the soil across cities and provinces, with Heilongjiang Province having the best land security status and Liaoning Province having the worst; (3) The amount of soil erosion in tiny watersheds is the indicator that has the biggest influence on land ecological stability in the three provinces in the northeast; (4) The response layer is the criterion layer that has the strongest correlation with land ecological safety.

Section: Assessment Of the Ecological Stability Of Land Assets In Ter...mentioning

confidence: 99%

Research on Fuzzy Evaluation of Land Environmental Security in Three Provinces of Northeast China

Wang,

Zhou,

Guo

et al. 2024

“…Conventional IA and its subsequent extensions have been widely used around the world to study the LULC dynamics of natural and urban landscapes in the context of climate change [55,56], biodiversity [57,58], deforestation [59][60][61][62], urban growth [63][64][65][66][67], environmental risks [68,69], ecosystems [70][71][72], error map quantification [73][74][75], and gender land use preferences [76], among others. These studies share the following common factors in their analyses: a single study area, a set of maps allowing analysis of up to four time intervals, and a set of categories associated with the map layer.…”

Section: Application Of Dimension Reduction and Ia In Lulc Analysismentioning

confidence: 99%

Comprehensive Framework for Analysing the Intensity of Land Use and Land Cover Change in Continental Ecuadorian Biosphere Reserves

Urgilez-Clavijo,

Rivas-Tabares,

Gobin

et al. 2024

The conventional methods of land use and land cover (LULC) analysis are frequently based on crosstabulation matrices. However, this analysis becomes complex when including sites with multiple management zones and categories at different time points. This is challenging regarding data processing and the presentation of numerous results. We transformed the graphical representation of conventional Intensity Analysis to assess and compare the intensity and magnitude of LULC changes in six Continental Ecuadorian Biosphere Reserves at three levels: interval, category, and transition, and at three time intervals. A dimension reduction strategy was used to convert multiple bar charts into three composite heat maps. The results confirm the global conservation effectiveness in the core zones among the biosphere reserves with less than 10% change, but worrisome dynamics were detected in buffers and transitions with a change of up to 10% for all periods. Deforestation and agriculture were detected as the most relevant land processes. This work highlights the dimension reduction by summarizing 17, 51, and 312 bar charts from conventional Intensity Analysis in three composite heat maps, one for each level of analysis. Systematic suspicious transitions occurred in the water body category because of its dynamics and misclassification in LULC maps.

“…Landscape ecological risk assessment is an important branch of ecological risk assessment at the regional scale, that reflects the integration of geography and ecology, and pays more attention to the scale effect of ecological risk in a specific region [18,19], explaining and predicting the spatial and temporal distribution and characterization of ecosystem health and potential risk pressures [20]. During the last few years, with the acceleration in urbanization and industrialization, the influence of changes in land use structure on the ecological environment has become increasingly more significant [21][22][23], and the study of land use ecological risk has gradually become a leading theme and important issue in the domain of regional ecological risk research by scholars in China and abroad [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Ecological Risk Zoning Control in Zhundong Economic Development Zone Based on Landscape Pattern Changes

Ou,

Abulizi,

Zayiti

et al. 2023

The Zhundong coalfield in Xinjiang, China, is rich in resources and has great significance to the development of the Xinjiang region, but its local ecological environment is fragile and its climate is particularly dry, so mining is very likely to introduce a series of ecological risks; there is an urgent need for us to provide scientific and feasible guidance for the conservation and development of coal resources in this region. Therefore, this paper is based on the land-use-type data concerning the Zhundong Economic and Technological Development Zone from 2000 to 2020, exploring the land use change characteristics in the Zhundong area during these 20 years and calculating the ecological risk index of each risky district according to an ecological risk index model. Afterward, this article uses kriging interpolation to carry out a risk classification analysis to explore changes in ecological risk in the Zhundong area during the last 20 years and to put forward ecological risk partition and control measures for areas of different levels of risk. Our research shows the following features: (1) The land use type in the Zhundong area changed obviously from 2000 to 2020, in which unused land has always occupied most of the area of the Zhundong coalfield. Grassland was the land use type with the greatest area transferred, 211,412.35 hm2, accounting for 68.11% of the total transferred area, and it was mainly converted into unused and construction land. (2) In the last 20 years, the Zhundong coalfield has been dominated by higher-risk and high-risk areas, with obvious changes in the distribution of ecological risk levels. The low-risk, medium-risk, and higher-risk areas in the research zone have decreased and then increased; the lower-risk area has declined yearly, and the high-risk area has increased and then declined. Furthermore, overall, the ecological environment has transformed toward good condition. (3) High-risk and higher-risk areas still account for most of the research zone, and there is an urgent need for scientific and feasible programs to carry out ecological restoration in areas with different ecological risk levels to avoid further deterioration of the local environment.