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土地退化是全球生态环境恶化的主要形式之一,严重的土地退化已成为岷江上游地区经济可持续发展的障碍。分析了该区土地退化的现状:水土流失严重,干旱河谷进一步扩大;以及自然生态系统的脆弱性,人口快速增长和草场过度放牧等土地退化因素。并在此基础上提出了为改善生态环境而调整农业生产结构、加大坡耕地的坡改梯力度、控制人口增长,提高人口素质和加强法制建设及其监督管理的土地退化防治对策。
Land degradation is one of the major forms of global ecological deterioration. Serious land degradation has become an obstacle to sustainable economic development in the upper reaches of the Minjiang River. The status quo of land degradation in this area is analyzed: severe soil erosion and further expansion of dry valleys; and land degradation factors such as the vulnerability of natural ecosystems, rapid population growth and pasture overgrazing. On the basis of this, it puts forward some countermeasures to prevent and control land degradation by adjusting the structure of agricultural production to improve the ecological environment, increasing the slope-climbing scale in sloping arable land, controlling the population growth, improving the population quality and strengthening the legal system construction and its supervision and management.