【作者】 肖国举； 张强； 李裕； 张峰举； 王润元； 罗成科；

【Author】 Xiao Guoju1,Zhang Qiang2,Li Yu2,Zhang Fengju1,Wang Runyuan2,Luo Chengke1 (1.New Technology Application Research and Development Center of Ningxia University,Yinchuan,Ningxia 750021;2.Institute of Arid Meteorology,China Meteorological Administration,Gansu Key Laboratory of Arid Climate Changes and Disaster Reduction,Lanzhou,Gansu Province 730020,China)

【机构】 宁夏大学新技术应用研究开发中心； 中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室；

【摘要】 气候变暖加剧了土壤水分蒸发,带动土壤盐分向上移动,引起土壤盐分增加,导致土壤盐碱危害加剧。本研究采用近35年来的土壤盐分定位观测资料和气象资料,研究气候变暖对宁夏引黄灌区土壤盐分变化的影响。研究结果表明:近35年来年随着全球变暖,宁夏引黄灌区土壤全盐含量成明显的增加趋势,轻盐化土壤、中盐化土壤和重盐化土壤全盐分别增加了0.08g/kg、0.13g/kg和0.19g/kg;当温度增加0.5-3.0℃时,宁夏引黄灌区轻盐化土壤、中盐化土壤和重盐化土壤淋洗土壤增加盐分所需的灌水量分别增加8.2-9.1%、8.2-8.7%和8.3-8.8%,总灌水量增加1.29-1.40亿m3。更多还原

【Abstract】 Climatic warming has intensified soil moisture evaporation and led the soil salinity moving upward,which results in salinity increase and aggravated the harm of saline and alkaline of the soil.This paper has,on the basis of location observational data of soil salinity and meteorological data in the recent 35 years,researched the influence of climatic warming on soil salinity change of the irrigation amount of Yellow river irrigation areas of Ningxia.The result shows that the total soil salt content has been a increasing trend because of global climatic warming in the recent 35 years,and total salt content of light,moderate and severe salty soil has respectively increased by 0.08 g/kg,0.13 g/kg and 0.19 g/kg in Yellow river irrigation areas of Ningxia.When the temperature increased by 0.5-3.0℃,the irrigation amount of light,moderate and severe salty soil has respectively increased by 8.2-9.1%,8.2-8.7% and 8.3-8.8%,and the total irrigation amount has been increased by 129-140 million m3 because of soil salinity increase in Yellow river irrigation areas of Ningxia.更多还原