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黄土丘陵半干旱区人工林草植被蒸腾耗水量大于降雨入渗量,使土壤逐渐干燥化形成干层,进而对土地的可持续利用造成威胁.本文的主要目的是研究黄土丘陵半干旱区主要人工林草植被的耗水深度.通过测定农地、荒坡草地、7年生人工紫花苜蓿草地、23龄人工柠条灌木林和人工油松林地的土壤含水量,以农地和荒坡草地土壤含水量为对比基准,分析了人工林草植被的耗水深度.结果显示,人工紫花苜蓿、人工柠条林和人工油松林的耗水深度分别达到15.5,22.4和21.5m.
The transpiration water consumption of plantation forest vegetation in the semi-arid loess hilly region is greater than that of rainfall infiltration, so that the soil gradually desiccates to form a dry layer, thus threatening the sustainable use of the land.The main purpose of this paper is to study the main artificial The water consumption of forest and grassland vegetation was determined by measuring the soil water content of agricultural land, barren grassland, 7-year-old artificial alfalfa grassland, 23-year-old Artificial Caragana korshinskii forest and artificial Pinus tabulaeformis woodland, The water consumption was compared with that of artificial forest and grassland.The results showed that the water consumption depth of artificial alfalfa, artificial Caragana korshinskii and Pinus tabulaeformis forests were 15.5,22.4 and 21.5m respectively.