Vegetation Composition and Structure of Some Neotropical Mountain Grasslands in Brazil

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2015 > Vol12 No.4

	Vegetation Composition and Structure of Some Neotropical Mountain Grasslands in Brazil
	LE STRADIC Soizig ; BUISSON Elise ; FERNANDES G. Wilson
刊名	Journal of Mountain Science
	2015-07
卷号	12 期号:4 页码:864-877
关键词	Biodiversity Campos rupestres Herbaceous community Rupestrian grassland Edaphic factor Serra do Cipó.
ISSN号	1672-6316
通讯作者	LE STRADIC Soizig
英文摘要	The description and understanding of plant communities is fundamental for the implementation of conservation or restoration programs, especially when these communities are highly threatened and need to be restored. Campos rupestres, some Neotropical mountain grasslands located in central Brazil and part of the Cerrado biome (covering 2 million km²) host unique plant communities, currently threatened by quarrying and mining. The grassy matrix of campos rupestres, has long been considered a rich mosaic under the control of local topography and the nature of substrate, but this affirmation has not been well studied. We analyzed whether plant communities varied in relation to edaphic factors within the stony substrate and the sandy substrate of this grassy matrix. We selected 5 sites where occur both grasslands on stony substrate and on sandy substrate, and we carried out vegetation surveys and soil analyses. We counted 222 plant species within our communities, among which 38.6% are exclusively found on campos rupestres. Our results show that both soil-types are strongly acidic, nutrient poor and exhibit a seasonal variation. Phosphorus increases and pH and organic carbon decrease during the dry season. Stony soils are slightlyricher in nutrients than sandy soils and differences in soil granulometry and composition have led to the formation of distinct plant communities. Some species are confined to either one or the other grassland-type, which makes the plant composition of each community unique.Variations in edaphic factors generate heterogeneous grasslands favorable to a high plant diversity. Conservation programs and restoration actions have to maintain or recreate this heterogeneity. The presence of distinct plant communities implies that different strategies might be adopted to improve the restoration of these ecosystems.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/10634]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2015_Vol12 No.4
推荐引用方式 GB/T 7714	LE STRADIC Soizig,BUISSON Elise,FERNANDES G. Wilson. Vegetation Composition and Structure of Some Neotropical Mountain Grasslands in Brazil[J]. Journal of Mountain Science,2015,12(4):864-877.
APA	LE STRADIC Soizig,BUISSON Elise,&FERNANDES G. Wilson.(2015).Vegetation Composition and Structure of Some Neotropical Mountain Grasslands in Brazil.Journal of Mountain Science,12(4),864-877.
MLA	LE STRADIC Soizig,et al."Vegetation Composition and Structure of Some Neotropical Mountain Grasslands in Brazil".Journal of Mountain Science 12.4(2015):864-877.