气候变化领域集成服务门户(CCPortal): Development of 26-year-old mixed forests following different regeneration cutting treatments in Andean temperate rainforests of south-central Chile

CCPortal

DOI	10.1016/j.foreco.2018.10.004
	Development of 26-year-old mixed forests following different regeneration cutting treatments in Andean temperate rainforests of south-central Chile
	Donoso P.J.; Schlegel B.C.; Salas-Eljatib C.; Donoso C.
发表日期	2019
ISSN	0378-1127
起始页码	686
结束页码	693
卷号	432
英文摘要	Tree regeneration following even-aged silvicultural methods in the evergreen forest type (EFT) has been scarcely studied in Chile, although this is the largest forest type in a region of highly productive native forests. In 1981/1982 a total of nine 1.44-ha experimental units with old-growth forests of the EFT were subjected to block clearcutting (BCC), strip clearcutting (SCC) and reserve shelterwood cutting (RSC) methods (three replicates in each case) in the Andes range in south-central Chile (41°35′S–72°35′W). The resulting second-growth forest stands following these cuttings were evaluated in terms of composition, density, basal area, mean diameter and height after four and 26 years (432 4 m2 plots in 1986, and 78 100 m2 plots in 2008). Four years after cutting, there were >one million tree seedlings per hectare in more than 10 species. In all experimental units one shade-tolerant species (Amomyrtus luma), one midtolerant species (Eucryphia cordifolia) and two very shade-intolerant species (Embothrium coccineum and Weinmannia trichosperma) comprised between 69 and 74% of the total density. The SCC favored a greater relative dominance of all the more shade-tolerant species, and the BCC treatment was more favorable for pioneer species (in addition to E. coccineum and W. trichosperma also Drimys winteri, Caldcluvia paniculata and Nothofagus nitida). At age 26, the short-lived E. coccineum dominated in all treatments, and its major coexisting species in terms of tree density were the midtolerants D. winteri, Eucryphia cordifolia and N. nitida, and the shade-tolerants Laureliopsis philippiana and A. luma. However, the BCC significantly favored the development of N. nitida and D. winteri (three times more basal area than in the other treatments), which might be explained by increasing soil moisture that occurs in this region following this type of disturbances. While these treatments did not show significant differences in mean diameters and dominant height, the BCC and SCC treatments allowed denser, diverse and well-stocked second-growth forests compared to the RSC method, illustrating the differences between truly even-aged and two-aged silvicultural methods upon these variables. Overall, these forests show a high resilience, rapid reorganization and high productivity following the application of even-aged silvicultural methods. © 2018 Elsevier B.V.
英文关键词	Clearcutting; Even-aged regeneration cuttings; Evergreen temperate forests; Forest secondary succession; Reserve shelterwood cutting; Strip clearcutting
语种	英语
scopus关键词	Soil moisture; Clearcutting; Evergreen forests; High productivity; Second-growth forests; Secondary succession; Strip clearcutting; Temperate forests; Temperate rainforest; Reforestation; basal area; clearcutting; cutting (process); dicotyledon; disturbance; evergreen forest; mixed forest; old-growth forest; pioneer species; rainforest; seedling; shade tolerance; silviculture; soil moisture; temperate forest; Chile; Cuttings; Density; Forests; Methods; Reforestation; Trees; Type; Andes; Chile; Caldcluvia paniculata; Drimys winteri; Embothrium coccineum; Eucryphia cordifolia; Laureliopsis philippiana; Luma; Nothofagus nitida; Weinmannia trichosperma
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156344
作者单位	Instituto de Bosques y Sociedad, Universidad Austral de Chile, Valdivia, Chile; Instituto Forestal, Valdivia, Chile; Centro de Modelación y Monitoreo de Ecosistemas, Facultad de Ciencias, Universidad Mayor, Santiago, Chile; Laboratorio de Biometría, Departamento de Ciencias Forestales, Universidad de La Frontera, Temuco, Chile; Universidad Austral de Chile, Chile
推荐引用方式 GB/T 7714	Donoso P.J.,Schlegel B.C.,Salas-Eljatib C.,et al. Development of 26-year-old mixed forests following different regeneration cutting treatments in Andean temperate rainforests of south-central Chile[J],2019,432.
APA	Donoso P.J.,Schlegel B.C.,Salas-Eljatib C.,&Donoso C..(2019).Development of 26-year-old mixed forests following different regeneration cutting treatments in Andean temperate rainforests of south-central Chile.Forest Ecology and Management,432.
MLA	Donoso P.J.,et al."Development of 26-year-old mixed forests following different regeneration cutting treatments in Andean temperate rainforests of south-central Chile".Forest Ecology and Management 432(2019).