姜旭海,韩玲,李帆.陕西省主要作物灰水足迹时空变化特征研究[J].干旱地区农业研究,2021,(5):210~215
陕西省主要作物灰水足迹时空变化特征研究
Study on temporal and spatial changes of grey water footprints of main crops in Shaanxi Province
  
DOI:10.7606/j.issn.1000-7601.2021.05.27
中文关键词:  灰水足迹  作物  时空变化  面源污染  陕西省
英文关键词:grey water footprint  crops  temporal and spatial changes  non\|point source pollution  Shaanxi Province
基金项目:西安市重大科技成果转化及产业化项目(20GXSF0006)
作者单位
姜旭海 College of Land Engineering, Chang’an University, Xi'an, Shaanxi 710064, China 
韩玲 College of Land Engineering, Chang’an University, Xi'an, Shaanxi 710064, China 
李帆 College of Land Engineering, Chang’an University, Xi'an, Shaanxi 710064, China 
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中文摘要:
      以陕西省为例,运用灰水足迹理论,对陕西省2000―2018年间主要作物灰水足迹的时空变化趋势和分布状况进行研究分析。结果表明:小麦、玉米、油料作物、大豆、蔬菜、水果多年生产灰水足迹均值分别为0.472、0.231、0.639、0.532、0.087、0.199 m3·kg-1;研究期间作物生产灰水足迹年际变化整体呈下降趋势,小麦、油料作物、大豆、水果生产灰水足迹分别下降了0.007、0.015、0.009、0.012 m3·kg-1·a-1,玉米和蔬菜年际变化不明显,灰水足迹主要集中在关中平原地区。研究期间作物灰水足迹的变化主要受作物种植面积的间接影响,小麦、玉米、油料作物、大豆、蔬菜、水果多年灰水足迹均值分别为18.6×108、11.8×108、3.1×108、1.6×108、9.7×108、19.2×108m3·kg-1;省内作物灰水足迹多年均值为64.0×108m3·kg-1。综上,可从施肥种类选取、施肥方式和作物种植模式等方面入手降低灰水足迹,以此来减少农业面源污染。
英文摘要:
      In order to explore the impact of agricultural production on water resources, taking Shaanxi Province as an example, using the grey water footprint theory, the temporal and spatial trends and distribution of grey water footprints of main crops in Shaanxi Province from 2000 to 2018 were studied and analyzed. The results showed that the average gray water footprints of wheat, corn, oil crops, soybeans, vegetables, and fruits were 0.472, 0.231, 0.639, 0.532, 0.087, 0.199 m3·kg-1, respectively. During the study period, the inter\|annual variation of crop production gray water footprint showed a downward trend as a whole, and the downward trend was about 0.007, 0.015, 0.009, 0.012 m3·kg-1·a-1. The inter\|annual changes of corn and vegetables were not obvious, and they were mainly concentrated in the Guanzhong Plain area. During the study period, the changes in crop gray water footprint were mainly indirectly affected by crop planting area. The average gray water footprints of wheat, corn, oil crops, soybeans, vegetables, and fruits were 18.6×108, 11.8×108, 3.1×108, 1.6×108, 9.7×108, 19.2×108m3·kg-1, and the annual average value of the gray water footprint of crops in the province was 64.0×108m3·kg-1. Finally, it is proposed that the gray water footprint can be reduced from the selection of fertilization types, fertilization methods, and crop planting modes, so as to reduce agricultural non\|point source pollution.
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