文章基本信息

标题：Economic Incentives for Entry and Exit in Gum Arabic Agroforestry System in Sudan
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作者：Rahim, Afaf H. ; van Ierland, Ekko C. ; Wesseler, Justus 等
期刊名称：Australian Journal of Agricultural Economics
印刷版ISSN：0004-9395
电子版ISSN：0817-8763
出版年度：2006
卷号：AUG
出版社：Australian Agricultural Economics Society
摘要：The gum tree (Acacia senegal) in the Sahel-Sudan zone has many environmental benign functions. An important function is to control desertification. In this paper we analyze farmers economic incentives to preserve the existing gum trees and their incentives to create new plantations using a real options approach. Results indicate that agricultural crops provide higher economic benefits as compared to gum agroforestry system. However, on the one hand, as gum arabic is produced during the dry period and land is abundant, there are low incentives for deforestation. Instead, farmers tend to leave the land idle and let the tree growing. On the other hand, our results suggest that an increase in the prices of gum arabic of about 330 per cent is needed to induce entry and a shift in land use system from continuous agricultural production to gum agroforestry system.
关键词：gum arabic deforestation entry and exit real options Sudan