摘要
为研究和分析河北省夏玉米水足迹变化规律,提高农业中水资源利用效率,基于水足迹理论和方法,选取河北省2002—2018年17个气象站点气象数据和相关农业数据,对河北省夏玉米水足迹时空演变规律和影响水足迹变化的因素进行研究。结果表明:研究期间,河北省夏玉米生产水足迹呈波动式下降,年平均值为759.03 m^(3)/t;通过对比河北省夏玉米绿水足迹和蓝水足迹在枯水年2002年、平水年2003年和丰水年2013年空间演变特征,总体表现为研究年份绿水足迹值整体水平相当,蓝水足迹值差异较大;对选取的13个影响因子进行相关性分析后,得出蒸散量、有效灌溉面积与夏玉米生产水足迹呈显著正相关关系;夏玉米总产值与其呈显著负相关关系。研究成果对河北省农业水资源合理高效利用,优化夏玉米地域分布有参考价值。
In the aim of enhancing the efficiency of utilizing water resources in agriculture, we studied the spatial and temporal evolution of water footprint of summer maize in Hebei Province as well as the factors affecting the change of water footprint based on meteorological data from 17 meteorological stations and related agricultural data in Hebei Province from 2002 to 2018. Results revealed that in the study period, the water footprint of summer maize production in Hebei Province declined in a fluctuating mode, averaging 759.03 m^(3)/t annually. By comparing the spatial evolution characteristics of green water footprint and blue water footprint of summer maize in Hebei Province among the year 2002(low flow), 2003(normal flow), and 2013(high flow), we found that the green water footprint in different periods remained approximately the same level, while the blue water footprint differed significantly. Correlation analysis of 13 factors also suggest that the water footprint of summer maize is positively correlated with evapotranspiration and effective irrigation area;but significantly negatively corrlated with the total output value of summer maize.
作者
曹永强
杨雪婷
周姝含
CAO Yong-qiang;YANG Xue-ting;ZHOU Shu-han(School of Geographical Sciences,Liaoning Normal University,Dalian 116029,China)
出处
《长江科学院院报》
CSCD
北大核心
2023年第2期67-74,80,共9页
Journal of Changjiang River Scientific Research Institute
基金
国家自然科学基金项目(52079060,51779114)
辽宁省兴辽英才项目(XLYC2008033,XLYC200711)。
关键词
绿水足迹
蓝水足迹
时空演变
夏玉米
河北省
green water footprint
blue water footprint
temporal and spatial evolution
summer maize
Hebei province
