欢迎访问林业资源管理

FOREST RESOURCES WANAGEMENT ›› 2022, Vol. 0 ›› Issue (4): 89-99.doi: 10.13466/j.cnki.lyzygl.2022.04.012

• Scientific Research • Previous Articles     Next Articles

Dynamic Change and Influencing Factors of Vegetation Cover over the Past 30 years in the Wutai Mountain Area

REN Tianchen(), CHEN Junfeng, LIU Nan()   

  1. College of Hydraulic Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China
  • Received:2020-05-23 Revised:2020-07-14 Online:2022-08-28 Published:2022-10-13
  • Contact: LIU Nan E-mail:1216906976@qq.com;lntx617129@126.com

Abstract:

Based on 25 Landsat remote sensing data sources from 1991 to 2020,the temporal and spatial characteristics of vegetation coverage and its influencing factors in Wutai Mountain were analyzed by binary pixel model,wavelet analysis and partial correlation analysis.The results showed that the FVC values in Wutai Mountain area showed an increasing trend on the whole,in which the mean value of FVC in Wutai County was the highest,and the FVC growth rate in Yuanping City was the highest.There were three main change cycles of 9,12,21 years to control the change of FVC in the whole time domain.The vegetation cover in the study area showed a spatial distribution pattern of "low in the west and high in the east",and the improved area of vegetation cover was much larger than the degraded area.The CV values of Wutai County showed a large negative deviation phenomenon when the altitude was lower than 2 400m,and a large positive deviation phenomenon when the altitude was higher than 2 400m.The FVC values of Fanshi County showed an order as follows:shade slope>sunny slope>half shade slope>half sunny slope;The peak values of FVC in each slope direction of Dai County and Yuanping City appeared in the altitude range of 1 600~2 000m.The negative deviation of CV values in Wutai County,Dai County and Yuanping City increased with the increase of slope.From 1980 to 2015,the mean value of partial correlation coefficient between FVC value and temperature was 0.14,and that between FVC value and precipitation was 0.05.In Wutai Mountain area,the area of forest land and construction land increased,while the area of cultivated land and grassland decreased to varying degrees from 1980 to 2015,and there were vegetation decline problems in human-active areas such as mining areas and scenic spots.

Key words: Wutai Mountain area, vegetation coverage, influencing factors, remote sensing, Pixel binary model

CLC Number: