[1]Lin Yingbing,Wang Xiaojun,Quan Mingying,et al.Spatiotemporal Characteristics of Vegetation Coverage and Its Terrain Gradient Effect in Jiangxi and Fujian Provinces in South China[J].Research of Soil and Water Conservation,2024,31(01):290-300.[doi:10.13869/j.cnki.rswc.2024.01.004]
Copy
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
31
Number of periods:
2024 01
Page number:
290-300
Column:
Public date:
2024-02-20
- Title:
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Spatiotemporal Characteristics of Vegetation Coverage and Its Terrain Gradient Effect in Jiangxi and Fujian Provinces in South China
- Author(s):
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Lin Yingbing1, Wang Xiaojun2,3, Quan Mingying1, Lin Durui3,4, Lu Yi1, Liu Guangxu5
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(1.School of Geography Sciences, South China Normal University, Guangzhou 510631, China; 2.Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China; 3.University of Chinese Academy of Sciences, Beijing 100049, China; 4.Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; 5.School of Geography and Environmental Engineering, Gannan Normal University, Ganzhou, Jiangxi 341000, China)
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- Keywords:
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vegetation coverage; spatial-temporal characteristics; terrain gradient; dynamic degree; chord diagram; South China
- CLC:
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K903
- DOI:
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10.13869/j.cnki.rswc.2024.01.004
- Abstract:
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[Objective] Exploration of the spatiotemporal characteristics of vegetation coverage in the South China region serves as a reference for ecosystem investigation and conservation. [Methods] Taking Jiangxi and Fujian provinces as examples, the vegetation cover of five years, including 1998, 2005, 2010, 2015, and 2019, was divided into six levels from low to high levels. The spatiotemporal characteristics of vegetation coverage were analyzed using concepts such as dynamic degree and transfer in land use research, and its topographic gradient effect was discussed. [Results](1)The vegetation coverage in Jiangxi and Fujian was mainly high and extremely high(78.47%~89.8%), especially in the inland mountainous and hilly areas, while the densely populated urban areas along the river and coastal areas were relatively low coverage and small area; the vegetation coverage in this area was good and the overall trend of change was still increasing from 1998 to 2019. The most significant change occurred in 2010—2015 from high to very high coverage.(2)The terrain gradient index showed that the moderate vegetation coverage and below mainly distributed in grade 1~2 terrain gradient areas with an altitude of less than 200 m, a slope of less than 6° and a terrain position of less than 0.48. High vegetation coverage and above scattered in each terrain gradients, and with the increase of coverage, they tended to distribute in the terrain gradient areas of grade 3~5 with altitude higher than 200 m, slope higher than 6° and terrain level higher than 0.48.(3)In the category of unchanged or improved vegetation coverage change, the low coverage transfer mainly occurred in the grade 1 terrain gradient, the low and medium coverage transfer mainly occurred in the grade 1~3 terrain gradient area, and the transfer of high coverage and above occurred in the five types of terrain gradient and is relatively scattered. In the category of vegetation coverage change as deterioration, the transfer of medium coverage and below mostly occurred in the terrain gradient area of grade 1~3, while the transfer of high coverage and above mostly occurred and relatively scattered in the terrain gradient area of grade 5. The large span of transfer level usually occurred in the lower grade terrain gradient area. [Conclusion] The vegetation coverage in the research area is relatively high, and there are spatial-temporal differences in vegetation coverage changes. Ecological system investigation and protection need to consider the influencing factors under different terrain gradients.