我国盐碱地绿化研究进展与展望

我国盐碱地总面积达9 913万hm2，约占全国土地面积的1/10，面积大、分布广、类型复杂、生态系统脆弱、环境承载力差，既是我国经济社会生态可持续发展的主要障碍因子，也是重要的后备土地资源。盐碱地绿化可有效改善土壤理化性质、增加生物多样性、提高生态系统稳定性、增强环境承载能力，为盐碱地的进一步开发利用奠定基础，是一项重要的生态和民生工程，事关国家生态安全和经济社会可持续发展。文中对我国盐碱地面积、分布、类型及危害，盐碱地绿化障碍因素，当前盐碱地绿化相关技术等进行系统总结，提出了推进我国盐碱地绿化工作的建议，旨在为我国盐碱地治理与开发利用提供有益参考。

Research Advances and Prospect of Saline and Alkali Land Greening in China

The total area of saline and alkali land in China is about 99.13 million ha,which is nearly 1/10 of the total land area. The saline and alkali land, widely distributed with large area, complex categories, fragile ecosystem and poor environmental bearing capacity, is not only the main obstacle factor of sustainable economic, social, and ecology development in China, but also an important land resource in reserve. The greening of saline and alkali land can effectively improve physical and chemical characteristics of soil, increase the biodiversity, improve the stability of ecosystem and strengthen the environmental bearing capacity. Therefore it can lay the foundation for further exploitation and utilization of the saline and alkali land, and bears on national ecological security and sustainable economic and social development as an important ecological and livelihood project. This paper made a systematical review of the area, distribution, type and harm of saline and alkali land in China as well as the obstacle factors and related greening technologies, and came up with the suggestions for the promotion of saline and alkali land greening, development and utilization, which was aimed at offering a useful guidance to the treatment and exploitation of saline and alkali land in China.