气候变化领域集成服务门户(CCPortal): Native forest regeneration and vegetation dynamics in non-native Pinus patula tree plantations in Madagascar

CCPortal

DOI	10.1016/j.foreco.2019.05.019
	Native forest regeneration and vegetation dynamics in non-native Pinus patula tree plantations in Madagascar
	Randriambanona H.; Randriamalala J.R.; Carrière S.M.
发表日期	2019
ISSN	0378-1127
起始页码	20
结束页码	28
卷号	446
英文摘要	Today, exotic invasive alien species are considered to be one of the greatest threats to biodiversity. However, not all exotic species cause negative consequences in the ecosystems in which they settle. In some cases, artificial plantations of exotic species can act as a catalyst for the regeneration of native species. In southern central Madagascar, which has been affected by diverse disturbances (cyclones, logging, cultivation), Pinus patula plantations have become environments conducive to the regeneration of native species. This study aims to assess the level of understory plant diversity in these artificial plantations, describe the vegetation dynamics, and examine the effects of agricultural practices and logging on vegetation diversity and structure. Floristic inventories and biomass measurements were made on three types of vegetation that have resulted from previous human-induced disturbance: (i) cassava crops established after pine logging; (ii) fallows corresponding to cassava crops left fallow for 1–2 years; and (iii) post-logging regrowth after pine logging 3–10 years previously. Botanical surveys were conducted on 205 10 × 10 m2 quadrats placed along 40 transects. A total of 125 species, 34 of which endemic, from 46 families were inventoried. The Shannon Weaver index H′ values were significantly different between post-logging regrowth (H′ = 4.01 ± 0.67), and cultivated fields (H′ = 1.46 ± 0.23) and fallows (H′ = 3.31 ± 0.78) (p < 0.001). Agricultural practices, such as tillage regime, number of crop-fallow cycles (>2 cycles) and number of fire occurrences (>4 fires) had a greater impact on the reconstitution of vegetation than environmental parameters such as slope and topographic position. The Shannon-Weaver diversity index (H′) and vegetation structure parameters (tree density, biomass) were inversely correlated with the intensity of disturbance linked to these agricultural practices. These results suggest that a low level of disturbance, such as that resulting from Pinus tree logging, can act as a catalyst for the establishment of native woodlands. Excessive disturbance from sylvicultural and agricultural practices, such as frequent burning, heavy tillage and high number of crop/fallow cycles, may hinder, but does not block, the establishment of native woodlands. © 2019 Elsevier B.V.
英文关键词	Agriculture; Biodiversity; Disturbance; Exotic species; Logging; Restoration; Succession
语种	英语
scopus关键词	Agriculture; Biodiversity; Catalysts; Crops; Ecosystems; Image reconstruction; Logging (forestry); Reforestation; Storms; Vegetation; Agricultural practices; Disturbance; Environmental parameter; Exotic species; Invasive alien species; Shannon-Weaver diversity index; Succession; Vegetation diversities; Cultivation; agricultural practice; cassava; coniferous tree; disturbance; diversity index; forest ecosystem; introduced species; logging (timber); native species; regrowth; restoration ecology; succession; vegetation dynamics; vegetation structure; woodland; Agriculture; Biodiversity; Catalysts; Ecosystems; Farm Crops; Reforestation; Madagascar; Manihot esculenta; Pinus patula
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/155950
作者单位	Centre National de Recherches sur l'Environnement (CNRE), BP. 1739, Antananarivo, 101, Madagascar; Institut Supérieur de Sciences, Environnement et Développement Durable (ISSEDD), Université de Toamasina, BP 591, Toamasina, 501, Madagascar; Département des Eaux et Forêts, École Supérieure des Sciences Agronomiques, BP 175, Université d'Antananarivo, Antananarivo, 101, Madagascar; IRD, (UMR GRED-220, IRD, UPVM), Université Paul Valery, Site St Charles, Route de Mende, 34199, Montpellier Cedex 05, France
推荐引用方式 GB/T 7714	Randriambanona H.,Randriamalala J.R.,Carrière S.M.. Native forest regeneration and vegetation dynamics in non-native Pinus patula tree plantations in Madagascar[J],2019,446.
APA	Randriambanona H.,Randriamalala J.R.,&Carrière S.M..(2019).Native forest regeneration and vegetation dynamics in non-native Pinus patula tree plantations in Madagascar.Forest Ecology and Management,446.
MLA	Randriambanona H.,et al."Native forest regeneration and vegetation dynamics in non-native Pinus patula tree plantations in Madagascar".Forest Ecology and Management 446(2019).