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Forest-grassland biodiversity hotspot under siege:land conversion counteracts nature conservation

Ecosystem Health and Sustainability 2016年第6期2卷 1-12页

作者： Julia-Maria Hermann Marion Lang Juliana Gonçalves heinrich hasenack Technische Universitat München Freising85354 Germany Universidade Federal do Rio Grande do Sul Porto Alegre91501-970 Brazil

We report extent and rate of land use/land cover change in a forest-grassland mosaic of Rio Grande do Sul,Brazil,during a recent period of increasing conflicts between native habitat protection and *** area is part of the Atlantic rain forest biome,a Global Biodiversity *** Landsat and Google Earth imagery,and calculating an effective conservation risk index(ECRI)as ratio of converted to remnant area,we specifically compared the effectiveness of designated fully protected areas(FP-PAs)and Sustainable Use areas(SU-PAs)in preventing conversion of native forest and grassland hab-itats for agri-and silviculture,relative to areas *** area decreased by 17%,corresponding to a net loss of 59,671 ha,in the entire *** gains exceeded losses,and ECRI was zero inside Full Protection ***-native tree plantation area increased by 94%over the entire study area;cropland increased by 7%.Conversion for silviculture predominated outside the designated PAs and conversion for agriculture predominated inside the designated *** was generally higher for grassland than forest,and in SU-PAs,grassland ECRI was several times higher than in areas without any protection *** developments are in stark contrast to the high standards of the Brazilian protected area system and corre-sponding International Union for Conservation of Nature and Natural Resources *** are due to protracted regularization of land conversion and establishment of designated protection ***-more,they reveal the dilemma of previously managed grasslands in strictly protected areas being eventually succeeded by forest,and the hazards of broad interpretation of the term“sustainable development”.

关键词： conservation risk protected area strict protection sustainable use temperate grasslands

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