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我国西北地区受不同程度盐碱危害的耕作土地约占其耕地总面积的1/3,土壤盐碱化成为制约当地可持续发展的重大因素。面对可用土地资源的紧张加剧,必须寻求有效防治、改良及利用土壤盐碱化的办法。简述了西北地区盐碱地及耐旱碱植物的分布与现状;分析和总结了盐碱地成因、相应改良技术;以新疆奎屯润民河景观工程为例,论述旱碱地生态建设问题,试图探讨旱碱地绿地景观的生态建设模式,期望对同类型自然条件地区的生态建设提供参考与借鉴。
In Northwest China, the cultivated land harmed by salt and alkali in different degrees accounts for about one third of the total cultivated land. Soil salinization has become a major factor restricting the sustainable development of the area. In the face of intensified tensions in available land resources, we must seek ways to effectively prevent, improve and utilize soil salinization. The distribution and status quo of saline-alkali land and alkali-tolerant plants in Northwest China are briefly introduced. The causes of saline-alkali land and corresponding improvement techniques are analyzed and summarized. Taking Runmet River Landscape Engineering in Kuitun, Xinjiang as an example, the problems of ecological construction of dry-alkali land are discussed, It is expected to provide reference and reference for the ecological construction of the same type of natural conditions in the region.