[1]LIU Ruiyao,XU Li,FENG Fei,et al.Spatiotemporal Variation of Vegetation Coverage in Wuhai City from 2000 to 2018[J].Research of Soil and Water Conservation,2022,29(02):265-273.
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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:
265-273
Column:
Public date:
2022-03-20
- Title:
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Spatiotemporal Variation of Vegetation Coverage in Wuhai City from 2000 to 2018
- Author(s):
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LIU Ruiyao, XU Li, FENG Fei, LIU Ying, ZHANG Xinlei
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(College of Desert Control Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China)
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- Keywords:
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vegetation coverage; spatiotemporal variation; topographic factor; Wuhai City
- CLC:
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Q948.15; TP79
- DOI:
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- Abstract:
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In order to explore the characteristics of temporal and spatial dynamic change of vegetation coverage in Wuhai City and forecast the trend of NDVI in the future, based on Lantsat OLI/TM/ETM, DEM images were used to study the characteristics of temporal and spatial dynamic change of vegetation coverage in Wuhai City from 2000 to 2018 by using binary pixel model and trend analysis method. The Hurst index of R/S analysis method was used to predict the future NDVI trend in Wuhai City. The results show that:(1)from 2000 to 2018, the vegetation coverage in Wuhai City showed an increasing trend, with an increasing rate of 0.07%/decade, and the mean FVC increased from 22.26% to 41.30%;(2)the spatial FVC increased gradually from northwest to southeast, and the improved area of FVC was greater than the degraded area, and the improvement trend was more obvious in Hainan;(3)from the perspective of topographic factors, the vegetation coverage was greatly affected by elevation and slope, and the change between different slope aspects was not obvious;(4)the future change trend of vegetation in most areas of Wuhai City is random development, the area of continuous improvement accounts for 10.95%, and the area of continuous degradation accounts for 2.93%; Haibwan District has strong sustainable change, and Wuda District has strong anti-sustainable change. On the whole, vegetation coverage in the study area continued to rise from 2000 to 2018, and vegetation improved significantly. In future ecological protection, more attention should be paid to topographic factors and areas with vegetation degradation, so as to formulate reasonable policies.