[1]ZHANG Chengcai,LOU Yang,LI Ying,et al.Change of Vegetation Coverage in Funiu Mountain Regions Based on the Dimidiate Pixel Model[J].Research of Soil and Water Conservation,2020,27(03):301-307.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 03
Page number:
301-307
Column:
目次
Public date:
2020-04-20
- Title:
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Change of Vegetation Coverage in Funiu Mountain Regions Based on the Dimidiate Pixel Model
- Author(s):
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ZHANG Chengcai1, LOU Yang1, LI Ying2,3, JI Xingjie4, DONG Mengjia5
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(1.School of Water Conservancy Engineering, ZhengZhou University, ZhengZhou 450001, China; 2.CMA-Hennan Key Laboratory of Agrometeorological Support and Applied Technique, Zhengzhou 450003, China; 3.Henan Institute of Meteorological Sciences, Zhengzhou 450003, China; 4.Henan Climate Centre, ZhengZhou 450001, China; 5.Henan Baisha Reservoir Administrative Bureau, Yuzhou, Henan 461670, China)
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- Keywords:
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vegetation coverage; dimidiate pixel model; temporal changes; meteorological factor
- CLC:
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Q948.2
- DOI:
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- Abstract:
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Vegetation coverage is an important parameter that reflects regional ecological environment. Research for vegetation coverage is important to assess the quality of regional ecological environment. We select the MODIS NDVI data from 2000—2018 to calculate the monthly vegetation coverage of the Funiu Mountain area based on the dimidiate pixel model. One element linear regression, Hurst Index Method, Markov Model were used to analyze the temporal changes and investigate the effect of meteorological factors for the vegetation coverage changes. The results showed that:(1)the vegetation coverage in the study area was favorable, and the distribution of coverage was generally high in the middle and low in the surrounding areas;(2)the conversion of different levels of vegetation coverage in the study area was mainly from the low level coverage area to the high level coverage area;(3)in the period 2000—2018, vegetation coverage showed the increase in 68% of the study area, indicating that the vegetation coverage in the Funiu Mountain area had increased in the past 19 years;(4)it is estimated that the area with decreasing trend of vegetation coverage will make up 46% of the research area, and the area with increasing trend of vegetation coverage will only account for 26% of the research area in the future; it can be seen that the future changes of vegetation coverage in Funiu Mountain area are expected to decrease;(5)the change of vegetation coverage in the Funiu Mountain area is strongly correlated with temperature and precipitation. And the temperature is the main factor affecting the change of vegetation coverage in Funiu Mountain. Further analysis of the forest area in this area found that the vegetation coverage in the forest area was also greatly affected by temperature.