三峡库区土地持续利用潜力与途径模式

建立了量化评价模型,对三峡库区土地资源持续利用的潜力及其差异性进行了评价与分析。指出库区土地利用总体上处于弱持续发展的阶段,而且地区差异悬殊、面临的障碍因素多。因此,未来库区土地利用优化决策的关键在于遵照因地制宜和分类指导的原则,正确处理生态建设、移民安置和经济协调发展的关系。主要的途径模式包括植树造林、坡地改梯田、优化结构和产业突破等四个方面。

Sustainable potential and models of land use in the Three Gorges Reservoir Area

Sustainable land use is one of the essential objectives of exploitation, utilization and protection of the future land resources in Three Gorges Reservoir Area (TGRA) It is beneficial to revealing the structural characteristics of eco economic system of land use the situation among their subsystems to evaluate sustainable use of land resources aimed at its actual characteristics Furthermore, the scientific gist of making measures for strategic adjustment of land use and resettlement in the near future can be obtained by studying the ways and models of sustainable land use In this paper, the quantitative model for evaluation of sustainable land use is built Then based on the evaluation and analysis of sustainable land use potential and regional difference in TGRA, it is pointed out that the land use level as a whole are not only weakly sustainable, but also differs greatly in different regions Since there are a lot of impediment factors,therefore, the sticking point to make measures for land use is that the principles including adjustment measure to local conditions and guidance according to types must be complied, and the relationship among ecological rehabilitation,resettlement and economic development will be correctly disposed The main approach models inclucle four ways, namely,tree planting and of forestation, terracing slope land, optimizing structure and industrial breakthrough