[1]LI Yanan,DUO Linghua,ZHANG Ming.Evolution and Prediction of Land Use Pattern and Habitat Quality Based on CA-Markov and InVEST Model[J].Research of Soil and Water Conservation,2022,29(02):345-354.
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Evolution and Prediction of Land Use Pattern and Habitat Quality Based on CA-Markov and InVEST Model
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 02
Page number:
345-354
Column:
Public date:
2022-03-20
- Title:
- Evolution and Prediction of Land Use Pattern and Habitat Quality Based on CA-Markov and InVEST Model
- Keywords:
- CA-Markov model; InVEST model; habitat quality; land-use pattern; MCE model
- CLC:
- F301.2; X826
- DOI:
- -
- Abstract:
- In order to reveal the impact of land use change on the temporal and spatial evolution of regional habitat quality and promote the rational use of land resources and the establishment of ecological planning system, taking Nanchang City of Jiangxi Province as an example, based on land use data from 1995, 2005 and 2015, we applied CA-Markov and MCE models and combined with the InVEST model to evaluate and predict the habitat evolution characteristics under the perspective of land use evolution. The results showed that:(1)during 1995—2015, grassland, farmland and water body were the main land use types in Nanchang, accounting for more than 90%; construction land in the region had expanded significantly, with a growth rate of 96.44% over 20 years, mainly transformed from farmland and woodland;(2)the overall landscape habitat quality in the study area was significantly degraded, and a large number of high-grade habitat landscapes were converted to low-grade habitat landscapes; habitat degradation was more significant near cities and in various watersheds; most of the land types with high habitat scarcity were farmland and woodland;(3)during 2015—2025, the landscape pattern and habitat quality of Nanchang City continued to maintain the change trend during the period 1995—2015; land types with low habitat suitability such as construction land will expand rapidly, and then occupied the areas with high habitat quality such as forest land, water area and grassland, resulting in a dramatic expansion of the scale and impact of threat sources, an increase in the level of landscape fragmentation and a decrease in stability, which will cause a continuous decline in habitat quality in the study area. During the 30 years from 1995 to 2025, the habitat quality in the study area has deteriorated significantly. The main reasons are the expansion of urbanization and the reduction of ecological land.
- References:
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Last Update:
2022-04-20