文档介绍：1 科技创新中文摘要土壤退化是指在各种自然,特别是人为因素影响下所发生的导致土壤的农业生产能力或土地利用和环境调控潜力。全球土壤退化面积已达196 5万平方公里, 我国水土流失状况相当严重。1996 年我国水土流失面积已达 183 万平方公里, 占国土总面积的 19% 。自 1971 年FAO 提出土壤退化问题以来, 国际上土壤退化研究取得了重要进展。今后我国土壤退化的研究工作应从更广和更深的层次上系统综合地开展土壤退化的综合评价与主要退化类型农业生态系统的重建和恢复研究,并逐步向土地退化或环境退化方向拓展,最后提出了土壤退化的防治措施。关键词: 土壤退化机制;概况;进展;方向;措施 2 科技创新外文摘要 The progress of the studies on soil degradation and trends Abstract Soil degradation istopoint toagriculture efficiency affecting what time happens leading tosoil invarious atease ,especially artificial factor orland utilization and the environment regulate and control apotential. The whole world soil degradation area already has reached Our country loss ofsoil and water status pretty grave 19,650,000 square kilometers. 1996 Annual our country loss ofsoil and water area already has reached Take upgeneral area ofterritory nbsp 1,830,000 square kilometers19%. Self 1971 Annual FAO Since bringing forward the soil degradation problem, upper soil degradation studies aninternational having made major progresses. Our country soil degradation gointo job should carry out the soil degradation overall evaluation and main degeneration type agroecological system reconstruction and rehabilitate studying synthetically from broad and deeper upper arrangement ofideas system in the days e ,direction has brought forward the soil degradation prevention and cure measure tothe land degeneration orenvironment degradation and step bystep open upanexhibition ,final. Keywords: Soil degradation mechanism; General situation; Progress; Direction; Measure 3 目录前言............................................................................................................................................. 4 一、土壤退化的概念................................................................................................................. 4 二、全球土壤退化概况............................................................................................................. 5 三、我国土壤退化状况.........................................