摘要
基于2004~2018年的NDVI遥感数据,对四川省国家级公益林的植被覆盖进行时空变化分析,以期从长时间序列上揭示其植被覆盖变化情况,为国家级公益林遥感宏观监测提供理论依据。结果表明:(1)四川省国家级公益林植被覆盖呈现微小波动增加的趋势,空间上呈现出总体稳定、局部区域高植被覆盖和中等植被覆盖交替变化的时空特征;(2)2004~2018年间,四川省国家级公益林大部分区域植被覆盖是增加的,增长率在0~0.05的占多数,为54.43%,显著降低的区域仅占4.87%;(3)2004~2018年间,四川省国家级公益林NDVI值变异系数小于0.1的面积占81.74%,表明大部分区域植被覆盖是非常稳定的。
Based on the NDVI remote sensing data during 2004-2018,this study analyzed the temporal-spatial changes of the vegetation coverage of the state-level non-commercial forests in Sichuan province,in order to revealed the changes of their vegetation coverage from a long-term sequence and provided a theory for the remote monitoring of the state-level non-commercial forests.The results showed that:(1)the vegetation coverage of the state-level non-commercial forests in Sichuan province appeared a trend of slight fluctuations increasing,and it showed overall stability and alternated in high and medium vegetation coverage in some areas;(2)during 2004-2018 in most areas of the State-level Non-commercial Forests in Sichuan Province,the vegetation coverage has increased with a growth rate of 0-0.05,accounting for 54.43%,and the significantly reduced area only accounting for 4.87%;(3)during 2004-2018 the coefficient of variation of the NDVI in the State-level Non-commercial Forests in Sichuan Province was lessed than 0.1 accounts for 81.74%,showed that the vegetation coverage in most areas was very stable.
作者
鲜明睿
李继品
程文龙
黄贝
程伟
XIAN Mingrui;LI Jipin;CHENG Wcnlong;HUANG Bei;CHENG Wei(Kunming Survey&Design Institute of State Forestry&Grassland Administration,Kunming 650216)
出处
《林业建设》
2020年第2期33-37,共5页
Forestry Construction
关键词
国家级公益林
NDVI
时空变化
State-level non-commercial forests
NDVI
temporal-spatial changes
