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集水造林是受干旱地区无灌溉条件下解决人畜饮用水的水窖原理启发而设计出的,它主要由集水面和树穴两部分组成。其集水面积是依据树木的需水量和历年连续24小时最大降水量来决定的。集水造林是以扩大承雨的面积,增加树穴的含水量,使干旱区有限的降水得到最大限度的利用,以提高林木的成活和生长为目的的造林方法。从全球看,干旱半干旱地区约占陆地面积的35%。一些国家在这些地区采用集水技术为农牧业服务微有起色。早在4000年前,以色列内盖夫沙漠的农夫就开始利用山坡地而径流浇灌作物;目前美国干旱地区建立了大型集水区及各种集水系统来解决人畜饮水
Water-catchment is designed by the principle of the water cellar to solve the problem of drinking water for human and animals under the condition of no irrigation in arid areas. It mainly consists of a water collecting surface and a tree hole. The catchment area is based on the tree’s water demand and calendar year 24-hour maximum precipitation to decide. Catchment afforestation is to expand the area of bearing rain, increasing the water content of the tree hole, so that limited rainfall in arid areas to maximize the use of forest trees in order to improve the survival and growth of afforestation methods. Globally, arid and semi-arid lands account for about 35% of the land area. Some countries have adopted water-harvesting technologies in these areas to improve agriculture and animal husbandry services. As early as 4,000 years ago, farmers in the Negev desert in Israel began to use hillsides to run crops. Currently, large-scale catchment areas and various catchment systems are established in the arid regions of the United States to solve the problem of human and livestock drinking water