论文部分内容阅读
以甘肃省陇东黄土董志塬为研究区,采用SWAT模型和遥感方法,就黄土台塬区地下水库均衡进行综合研究.结果表明:黄土台塬区土壤水分负均衡常出现在5、6月份,该期水分亏缺不利于植被的健康稳定生长,是灌溉调节的主要时段.1981-2010年间,气温升高使陆表蒸散需求增加,降水减少使土壤水库补给减少,二者共同导致台塬区土壤水库负衡态势的加重.气候变化背景下,积极寻求外调水源是解决黄土台塬区水资源短缺问题的重要手段.
Taking the Dongzhiyuan Loess Plateau in Longdong of Gansu Province as a study area, the SWAT model and remote sensing method were used to study the equilibrium of underground reservoirs in Loess Plateau. The results showed that the soil moisture balance in the loess plateau often occurred in May and June Period of water deficit is not conducive to the healthy and stable growth of vegetation, is the main period of irrigation regulation .1981-2010, the rising temperature of the surface transpiration demand increased, reduced precipitation to reduce the supply of soil reservoirs, the two together lead to the Taiwan plateau soil Under the background of climate change, it is an important measure to solve the problem of water shortage in the loess plateau area.