生态学杂志2018，Vol.37Issue(11)：3467-3479,13.DOI:10.13292/j.1000-4890.201811.033
基于Landsat时间序列的湖南省会同县杉木人工林干扰历史重建与林龄估算
Reconstruction of stand-replacement disturbance and stand age of Chinese fir plantation based on a Landsat time series in Huitong County,Hunan
摘要
Abstract
We constructed a relatively complete annual time series of Landsat archived data of Huitong County,Hunan Province from 1986 to 2016,and detected the dynamics of each forest pixel by calculating and analyzing the annual Integrated Forest Z-cores in order to obtain historical disturbance information. We mapped stand age in the study area by establishing a statistical relationship between historical disturbance information and field-measured stand ages. The results showed that: ( 1) The area of Chinese fir plantations was 7.67×104 hectares,which was mainly distributed in the regions with the slope steepness less than 25°; ( 2) The disturbance of Chinese fir plantations mostly occurred before 1996. The highest loss of Chinese fir plantation area caused by the disturbance occurred mainly during 1987-1992,accounting for 17.54％ of the total area. The area of disturbed Chinese fir plantation gradually declined after 2000,while the area of forest recovered from disturbance increased rapidly during the same period. About 42％ of Chinese fir plantations were recovered from disturbances during the past 15 years,which were mostly located along the major transportation routes and the rivers; ( 3) Mature and intermediate-aged Chinese fir plantations occupied the majority of forest landscape,covering about 47％ and 15％ respectively. In contrast,young,near-mature,and over-mature Chinese fir plantations covered 15％, 3％,and 6％,respectively. Our results suggested that remote sensing time-series data could be used to effectively retrieve stand age distribution of regional plantation forest. Our results provide critical information for the management of local forest resources.关键词
林龄/时间序列/干扰历史/重建/杉木人工林Key words
stand age/time series/disturbance history/reconstruction/Chinese fir plantation引用本文复制引用
张文秋,房磊,杨健,张伟东,闫妍,闫巧玲..基于Landsat时间序列的湖南省会同县杉木人工林干扰历史重建与林龄估算[J].生态学杂志,2018,37(11):3467-3479,13.基金项目
国家重点研发计划项目( 2017YFA0604403) 、国家自然科学基金项目( 31500387) 和中国科学院特色研究所服务项目《人工林多目标经营的理论、技术与示范》资助. （ 2017YFA0604403）
