涪陵石灰岩(喀斯特)地区土地整理对生态环境的影响

Influence of Limestone Area Soil Improvement on Ecological Environment in Fuling District

在石灰岩地区实施坡改梯工程,减小地面坡度和缩短地面坡长,降低坡面径流速度和水土流失量;采取局部客土和取石还土措施,增厚土层,改善土壤结构,增大“土壤水库”容量,增加耕地有效面积;修建农田水利工程,形成拦、蓄、灌、排系统网络,做到水不乱流、泥不下山,改善农业生态环境;修建田间道路工程,方便农民生产生活,改善农业生产条件,合理利用土地资源。

In limestone area, several methods were applied to improve the environment. Four aspects below were mentioned in this paper. First, in order to decrease the slope runoff speed and soil erosion quantity, the “slope to terrace” transformation program with details of reducing the slope degree, shortening the slope length were suggested. Second, by replacing the stone with soil to thicken soil length, improving soil structure could enlarge the capacity of “soil reservoir” and extend effective arable area. Third, methods of improving the irrigation construction, forming the networks of blocking, storing, irrigating and draining could avoid water scattering and soil erosion. Another aspect was to build roads to promote the production and living conditions.