文章基本信息

标题：Agricultural Systems Located in the Forest-Savanna Ecotone of the Venezuelan Amazonian. Are Organic Agroforestry Farms Sustainable?
本地全文：下载
作者：López-Hernández, Danilo ; Hernández, Carmen Leonor ; Netuzhilin, Igor 等
期刊名称：Sustainability
印刷版ISSN：2071-1050
出版年度：2009
卷号：1
期号：2
页码：215-233
出版社：MDPI, Open Access Journal
摘要：The savannas located in the forest-savanna ecotone in the Venezuelan Amazon have unfertile sandy ultisols and entisols which show a very low crop production unless they are supplemented with large amounts of fertiliser. In spite of this restriction, local farmers have established long-term production systems by using low input doses of organic manure. The use of organic waste in unfertile ultisols and entisols typical of savannas have resulted in increases in organic matter content and biological activities in soils with respect to inorganic fertilised or non-fertilised natural savanna, which, in turn, may be related to increases in crop productivity. These results could be a successful and reliable soil management technique for rehabilitation of the South American savannas.
关键词：organic farms; soil quality; microbial biomass; enzymatic activities; Amazonia