【摘要】 土壤环境变化是恢复生态学研究的重要内容之一,加强混农林的立体优化配置,有利于控制水土流失、改善土壤环境质量和提高生态脆弱区的生态和经济效益。文中系统总结混农林业对石漠化地区土壤水分、养分、生物特征的影响,阐明在石漠化极端脆弱生态环境条件下,林木与农作物存在的水肥竞争以及复合农田中树龄较小时对土壤生物活性的抑制作用,进一步从石漠化地区土壤环境角度对混农林业的水分利用策略、乡土树种的选择搭配、有益土壤生物的应用等方面提出建议,以期为喀斯特石漠化地区提高土地生产力、控制水土流失、发展立体生态农业等提供参考。更多还原

【Abstract】 Soil environmental change is one of the important research field of restoration ecology. Strengthening the vertically optimized configuration of agroforestry will help control soil and water loss, ameliorate soil environment quality and improve the ecological and economic benefits of ecologically fragile areas. This paper systematically summarized the effects of agroforestry on soil moisture content, nutrient and bioactivity characteristics in rocky desertification areas, and clarified the competition of water and fertilizer in forests and crops under the extremely fragile ecological environment of rocky desertification and the inhibitory role of small-aged trees on the soil bioactivity in the compound farmland. The suggestions were proposed for water use strategy of agroforestry, the selection and configuration of native tree species, and the application of beneficial organisms from the perspective of soil environment in rocky desertification areas. This study was expected to provide references for improving land productivity, controlling soil erosion and developing vertical ecological agriculture in karst rocky desertification areas.更多还原