[1]WANG Wenchuan,XUE Pei,LIU Suhua.Spatiotemporal Evolution of Vegetation Cover in Henan Province from 1999 to 2018[J].Research of Soil and Water Conservation,2022,29(02):243-248+264.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 02
Page number:
243-248+264
Column:
Public date:
2022-03-20
- Title:
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Spatiotemporal Evolution of Vegetation Cover in Henan Province from 1999 to 2018
- Author(s):
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WANG Wenchuan, XUE Pei, LIU Suhua
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(College of Water Resources, North China University of Water Resources and Electric Power, Zhengzhou 450046, China)
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- Keywords:
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trend analysis method; vegetation coverage; temporal and spatial changes; Henan Province
- CLC:
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Q948; TP79
- DOI:
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- Abstract:
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In order to study the temporal and spatial evolution characteristics of vegetation cover in Henan Province, the temporal and spatial evolution characteristics of vegetation cover in Henan Province from 1999 to 2018 were analyzed by using the methods of slope trend analysis, typical city analysis, typical year and month analysis, and the impact of land use type change on vegetation cover. The results show that:(1)the improvement of vegetation cover in the west and south of Henan Province was obvious, there was a slight improvement in the north and east of Henan Province, while the vegetation cover in central Henan Province degraded;(2)the distribution of NDVI in Henan Province had strong spatial differences; from east to west, the NDVI average was the lowest in the middle, the highest in the east and the second highest in the west; the average of NDVI in Henan Province showed the trend of high in the surround areas and low middle part in provincial space;(3)the NDVI of monthly scale in Henan Province showed obvious seasonality, the highest value appeared in August in summer, and the lowest value appeared in January in winter;(4)the increase in residential land affected the vegetation coverage in Henan Province, and had a negative impact;(5)since the implementation of the policy of ‘returning farmland to forest' in Henan Province, arable land had decreased significantly and forest land had increased. It can be concluded that the overall vegetation coverage of Henan Province had improved and the NDVI value had increased from 1999 to 2018.