DOI: 10.1016/j.foreco.2015.02.025
Scopus记录号: 2-s2.0-84949642051
论文题名: Native forest replacement by exotic plantations in southern Chile (1985-2011) and partial compensation by natural regeneration
作者: Zamorano-Elgueta C. ; Rey Benayas J.M. ; Cayuela L. ; Hantson S. ; Armenteras D.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 345 起始页码: 10
结束页码: 20
语种: 英语
英文关键词: Deforestation
; Fragmentation
; Land cover change
; Spatial patterns
; Temperate forest
Scopus关键词: Agriculture
; Deforestation
; Ecosystems
; Land use
; Reforestation
; Satellite imagery
; Fragmentation
; Land-cover change
; LANDSAT satellite images
; Natural forest regenerations
; Nearest neighbor distance
; Spatial configuration
; Spatial patterns
; Temperate forests
; Forestry
; deforestation
; ecosystem service
; habitat fragmentation
; land cover
; land use change
; patch size
; plantation forestry
; regeneration
; spatial analysis
; temperate forest
; Chile
英文摘要: Although several studies have reported rates of deforestation and spatial patterns of native forest fragmentation, few have focused on the role of natural forest regeneration and exotic tree plantations on landscape dynamics. The objective of this study was to analyze the dynamics of land cover change in order to test the hypothesis that exotic tree plantations have caused a major transformation of temperate forest cover in southern Chile during the last three decades. We used three Landsat satellite images taken in 1985 (TM), 1999 (ETM+), and 2011 (TM) to quantify land cover change, together with a set of landscape indicators to describe the spatial configuration of land cover. Our results showed that the major changes were dynamic conversion among forest, exotic tree plantation and shrubland. During the study period, the area covered by exotic tree plantations increased by 168% (20,896-56,010. ha), at an annual rate of 3.8%, mostly at the expense of native forest and shrubland. There was a total gross loss of native forest of 30% (54,304 ha), but a net loss of initial cover of only 5.1% (9130 ha), at an annual net deforestation rate of 0.2%. The difference between gross and net loss of native forest was mostly the result of conversion of shrubland and agricultural and pasture land to secondary forest following natural regeneration. Over the course of the study period, exotic tree plantations showed a constant increase in patch density, total edge length, nearest-neighbor distance, and largest patch index; maximum mean patch size occurred in the middle of the study period. Native forest exhibited an increase and then a decrease in patch density and total edge length, whereas mean patch size and largest patch index were lowest in the middle of the period. Overall, the observed trends indicate expansion of exotic tree plantations and increase in native forest loss and fragmentation, particularly between 1985 and 1999. Forest loss included both old-growth and secondary forests, while native forest established after secondary succession differed in diversity, structure, and functionality from old-growth and old growth/secondary forests. Since different successional stages influence the provision of ecosystem services, the changes observed in our study are likely to have consequences for humans that extend beyond immediate changes in land use patterns. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65484
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Departamento de Ciencias de la Vida - UD Ecología, Edificio de Ciencias, Universidad de Alcalá, Alcalá de Henares, Spain; Área de Biodiversidad y Conservación, Departamento de Biología y Geología, Universidad Rey Juan Carlos, c/Tulipán s/n, Móstoles (Madrid), Spain; Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research, Atmospheric Environmental Research (IMK-IFU), Garmisch-Partenkirchen, Germany; Laboratorio de Ecología del Paisaje y Modelación de Ecosistemas, Departamento de Biología, Facultad de Ciencias, Universidad Nacional de Colombia, Bogotá, Colombia
Recommended Citation:
Zamorano-Elgueta C.,Rey Benayas J.M.,Cayuela L.,et al. Native forest replacement by exotic plantations in southern Chile (1985-2011) and partial compensation by natural regeneration[J]. Forest Ecology and Management,2015-01-01,345