Forest-grassland biodiversity hotspot under siege:land conversion counteracts nature conservation
作者机构：Technische Universitat MünchenFreising85354 Germany Universidade Federal do Rio Grande do SulPorto Alegre91501-970 Brazil
出 版 物：《Ecosystem Health and Sustainability》 (生态系统健康与可持续性（英文）)
年 卷 期：2016年第2卷第6期
页 面：1-12页
学科分类：0907[农学-林学] 08[工学] 0829[工学-林业工程] 09[农学]
基 金：Marion Lang and Julia-Maria Hermann acknowledge funding by Deutsche Forschungsgemeinschaft(DFG:KO1741/2-2 KO1741/3-1)
主 题：conservation risk protected area strict protection sustainable use temperate grasslands
摘 要：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.
维普期刊数据库