[1]Lu Qi,Xing Shaohua,Liu Chang,et al.Spatiotemporal Variation of the Vegetation Coverage and Its Response to Land Use/Cover Changes in the Yellow River Delta in Recent 20 years[J].Research of Soil and Water Conservation,2023,30(06):366-375.[doi:10.13869/j.cnki.rswc.2023.06.034]
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Spatiotemporal Variation of the Vegetation Coverage and Its Response to Land Use/Cover Changes in the Yellow River Delta in Recent 20 years
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 06
Page number:
366-375
Column:
Public date:
2023-10-10
- Title:
- Spatiotemporal Variation of the Vegetation Coverage and Its Response to Land Use/Cover Changes in the Yellow River Delta in Recent 20 years
- Keywords:
- NDVI; fractional vegetation coverage(FVC); land use and land cover change(LUCC); Yellow River Delta; geo-spectrum unit
- CLC:
- X37; TP79; Q948
- DOI:
- 10.13869/j.cnki.rswc.2023.06.034
- Abstract:
- [Objective] The study aims to investigate the spatial and temporal dynamics of vegetation cover in the region, and the response mechanism of vegetation cover to land use changes, so as to provide reference for the ecological protection, construction and high-quality development of the Yellow River Delta. [Methods] Based on moderate resolution imaging spectroradiometer(MODIS)16-day normalized difference vegetation index(NDVI)at a spatial resolution of 250 m, trend analysis method and correlation analysis method were used to detect vegetation dynamics in Dongying City during 2000—2019. In addition, the geo-spectrum of land use and land cover change(LUCC)was established by using land-use remote sensing data to explore the process and driving forces of LUCC, which was expected to comprehensively understand the relationship between temporal and spatial changes of the fractional vegetation coverage(FVC)and the land-use changes in Dongying City from 2000 to 2019. [Results] By and large, the strong FVC areas mainly distributed in the south of Dongying City, along the Yellow River, and the old course of the Yellow River, while the low FVC areas distributed in the north and east coastland. As for the temporal variation, the annual average NDVI value in Dongying City ranged from 0.25 to 0.33, the FVC of Dongying City appeared to have an overall trend of increasing initially and decreasing afterwards, with the FVC reaching the highest in 2010. As for the spatial variation, the proportion of FVC improvement area was larger than that of degradation area, accounting for 44.86% and 37.94%, respectively. [Conclusion] The conversion of grassland and unused land to construction land and waters is the main reason for the degradation of FVC.
- References:
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Last Update:
2023-10-10