【摘要】 宁南半干旱黄土丘陵区干旱少雨、水土流失严重。为充分利用宝贵的天然降水,提高雨水资源的利用效率,针对项目示范区的几种坡地雨水就地拦蓄工程技术,主要从坡地雨水资源化工程对土壤水分的影响(土壤水分年际变化、土壤水分的季节性动态)方面,对坡地雨水资源化工程技术所产生的效应进行了综合评价。结果表明:宁南半干旱黄土丘陵区坡地在经过雨水资源化工程技术措施治理后,水分有了明显的提高。这些集雨整地技术,在促进林地农业土壤水分的快速恢复上效果极为显著,且对促进流域内的植被恢复、防止水土流失、改变山区生态环境、提高土地生产力有着重要的意义。更多还原

【Abstract】 The climate of arid and semiarid loess hilly region of southern Ningxia is dry,and soil erosion is the severe environmental problem.In order to make full use of the valuable natural precipitation,improve the efficiency of utilization of rainwater,the effects of several slope rainwater storing technologies were comprehensively evaluated via the impacts of these technologies on soil moisture(including the interannual variability,seasonal dynamics of soil moisture).The results indicated that the Slope Rainwater Resourcing Engineering could obviously improve the soil water content,and the technique of rainwater harvesting land preparation could improve soil water of the cropland and forestland.All these measures are important for vegetation restoration,soil erosion prevention,ecological environment improvement and productivity enhancement.更多还原