[1]YANG Xuchao,ZHANG Jun,LI Jie,et al.Temporal and Spatial Variation Characteristics of Vegetation Coverage and Land Use Driving in Chenggong District in Recent 30 Years[J].Research of Soil and Water Conservation,2019,26(04):232-238.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 04
Page number:
232-238
Column:
Public date:
2019-06-11
- Title:
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Temporal and Spatial Variation Characteristics of Vegetation Coverage and Land Use Driving in Chenggong District in Recent 30 Years
- Author(s):
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YANG Xuchao1, ZHANG Jun1, LI Jie1, LAO Jieying2, WU Zhijuan3
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1. Department of Environment and Resources, Yunnan University, Kunming 650504, China;
2. Kunming Land Development and Consolidation Center, Kunming 650504, China;
3. Yunnan Institute of Geology and Mineral Surveying, Kunming 650504, China
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- Keywords:
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vegetation cover; land use; remote sensing; Chenggong District
- CLC:
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TP79;Q948;F301.24
- DOI:
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- Abstract:
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Based on the Landsat data from 1990 to 2018, pixel dichotomy, wavelet analysis, trend analysis, and object-oriented nearest neighbor classification, the temporal and spatial distribution, trend variation, spatial fluctuation characteristics and land use of vegetation cover in Chenggong District were explored. With respect to the time scale, the FC in Chenggong District showed a slow growth trend, and there were mainly two periods of change in 14 years and 7 years to control the variation characteristics of FC in the whole time domain. With respect to spatial scale, the Chenggong District as a whole presented a feature that the peripheral FC was higher and decreased toward the central region. The area with high vegetation coverage accounted for 71.92%, and the overall vegetation was better. The area of vegetation improvement accounted for 39.02%, and the degraded area accounted for 25.52%. The improvement area was mainly located in the eastern mountainous area of Chenggong District. The central part of the area of about 2/3 of the total area was fluctuating in the middle and high. The higher and improved areas of FC were mainly located in the eastern forest land of the present Chenggong District; the high fluctuation change was observed in the central cultivated land, the bare land converted into the construction land and the forest land area. The bare land, cultivated land and construction land were mainly converted into forest land, of which the proportion of converted bare land was 25.94%; up to 31.14% of construction land and 26.93% of cultivated land were converted into bare land.