论文部分内容阅读
基于CSLE模型,在构建适合赣南地区侵蚀环境的该模型各因子算法的基础上,利用现有的基础数据,对该地区30年来不同时期的水土流失进行了评价。结果表明:近30年来尤其是近10年来,赣南地区水土流失治理迅速,效果明显,但目前水土流失依然比较严重,尤其是强烈以上的侵蚀面积所占比重较大;各因子在不同时期对水土流失影响的主导程度不同,随着治理程度的提高,影响水土流失的主导因子逐渐减少;通过水土流失预测,在未来的10年和30年里,赣南地区的水土流失面积将会进一步减小,尤其是强烈以上的面积减小迅速,但该区水土流失潜在可治理面积比较大,还需要进一步加强综合治理。
Based on the CSLE model, based on the algorithm of each factor of the model which is suitable for the erosion environment in southern Jiangxi Province, the existing basic data are used to evaluate the soil erosion in different periods of the past 30 years in this area. The results showed that in recent 30 years, especially in the past 10 years, soil erosion in Gannan area has been rapidly controlled and the effect is obvious. However, soil erosion is still serious at present, especially in areas with strong erosion. The factors at different periods With the different degrees of dominance of soil and water loss, with the improvement of governance level, the dominant factor affecting soil and water loss gradually decreases. Through the prediction of soil and water loss, the area of soil and water loss in southern Jiangxi will be further reduced in the next 10 and 30 years The area of small, especially intense, decreases rapidly, but the potential manageable area of soil erosion in the area is comparatively large, and comprehensive management needs to be further strengthened.