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由于森林覆盖面积的缩减,制度上的缺陷,人口增加和不合理的山区农业系统等因素,吉大港山区植被严重退化。孟加拉吉大港山区正在实践现代农业体系(如坡地农垦技术),它通过建立生态群落(而非传统轮垦)提高经济产量和生物多样性,这种现代农业体系提供了一种新土地开发策略。本研究对孟加拉吉大港山区Khagrachari的现代和传统农业体系中的土壤化学性质变化进行对比分析。与传统轮耕相比,实行坡地农业耕地技术的土地有较高的生产容量,含有较高的有机碳和有机物。在吉大港山区,通过发展综合农业生态系统建立稳定的生产环境,可以将轮作耕地变为相对稳定的半永久性的农业系统。
The vegetation in the Chittagong Hill Tracts has been seriously degraded due to reduced forest cover, institutional deficiencies, population growth and irrational mountain agricultural systems. A modern farming system (such as sloping land reclamation technology) is being practiced in the Chittagong Hill Tracts, Bangladesh. It enhances economic productivity and biodiversity through the establishment of ecological communities instead of traditional rotation. This modern agricultural system provides a new land development strategy. In this study, we compared the changes in soil chemistry in modern and traditional agricultural systems in Khagrachari, Chittagong Hill Tracts, Bangladesh. Compared with traditional rotation, land with agricultural land reclamation on sloping land has higher production capacity and contains higher organic carbon and organic matter. In Chittagong Hill Tracts, the rotation of arable land can be turned into a relatively stable and semi-permanent agricultural system through the development of a comprehensive agroecosystem to establish a stable production environment.