Surface Reactivity in Tropical Highly Weathered Soils and Implications for Rational Soil Management

作     者：R.MOREAU J.PETARD R. MOREAU and J. PETARDResearch Institute for Development (IRD), 911 Avenue Agropolis, BP 64501, 34394 Montpelher Cedex 5 (France).

作者机构：Research Institute for Development(IRD)911 Avenue AgropolisBP 6450134394 Montpellier Cedex 5(France).Research Institute for Development(IRD)911 Avenue AgropolisBP 6450134394 Montpellier Cedex 5(France). 

出 版 物：《Pedosphere》 (土壤圈（英文版）)

年 卷 期：2004年第14卷第4期

页      面：409-423页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学] 

主　　题：heavy metal highly weathered soils phosphorus tropical soil management variable charge minerals 

摘      要：Highly weathered soils are distributed in the humid and wet-dry tropics, as well as in the humid subtropics. As a result of strong weathering, these soils are characterized by low activity clays, which develop variable surface charge and related specific properties. Surface reactions regarding base exchange and soil acidification, heavy metal sorption and mobility, and phosphorus sorption and availability of the tropical highly weathered soils are reviewed in this *** controlling surface reactivity towards cations and anions, including ion exchange and specific adsorption processes, are discussed with consideration on practical implications for rational management of these soils. Organic matter content and pH value are major basic factors that should be controlled through appropriate agricultural practices, in order to optimise favorable effects of colloid surface properties on soil fertility and environmental quality.