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博文

目前显示的是标签为“Wetland”的博文

Perspectives on Zonation in Ramsar Sites, and Other Protected Areas: Making Sense of the Tower of Babel

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=50410#.VD4cgVfHRK0 Author(s)   Qing Zeng , Peter Bridgewater , Cai Lu , Jinqi Yun , Guangchun Lei Affiliation(s) School of Nature Conservation, Beijing Forestry University, Beijing, China . ABSTRACT Zonation of land or water areas is a tool frequently used to clarify management objectives, assist with monitoring of the effectiveness of those objectives and reconcile user conflicts. The Ramsar Convention has promoted zonation for wetlands as a management tool, but in a rather unstructured way, in contrast to the highly structured three-zone system of UNESCO-MAB Biosphere Reserves. At the same time, over the last 40 years IUCN has been developing a categori...

Estimates for Carbon Stocks in Soil under Humid Grassland Areas in the Federal District of Brazil

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=50409#.VD4bHFfHRK0 Author(s)   Andreia M. S. França 1* , Rodrigo J. O. Paiva 2 , Edson E. Sano 3 , Arminda M. Carvalho 3 Affiliation(s) 1 Instituto Federal de Brasília, Campus Samambaia, Brasilia, Brazil . 2 Universidade de Brasília, Pós-Gradua??o em Geoprocessamento Ambiental, Brasilia, Brazil . 3 Empresa Brasileira de Pesquisa Agropecuária, EMBRAPA Cerrados, Brasilia, Brazil . ABSTRACT The soils that lay below humid ecosystems are characterized as being significant holders of carbon. Because of the great susceptibility of this type of environment to anthropic changes, expressive quantities of carbon stored in the soil can be released into the atmosphere. In...