globalchange  > 气候变化事实与影响
CSCD记录号: CSCD:6331228
论文题名:
中国东北三省大豆虚拟水时空分异及其影响因素研究
其他题名: Spatial-temporal Distribution of Soybean Virtual Water and Its Influencing Factors in Northeast China during 1986-2012
作者: 代粮1; 刘玉洁1; 潘韬2
刊名: 地球信息科学学报
ISSN: 1560-8999
出版年: 2018
卷: 20, 期:9, 页码:53-62
语种: 中文
中文关键词: 大豆 ; 虚拟水 ; 时空分异 ; 需水量 ; 东北三省
英文关键词: soybean ; virtual water ; spatial-temporal distribution ; evapotranspiration ; Northeast China
WOS学科分类: AGRONOMY
WOS研究方向: Agriculture
中文摘要: 水资源分布不均制约了地区农业生产。从虚拟水角度研究作物需水的时空变化特征及影响因素对提高水资源的合理配置与利用效率,缓解地区水资源短缺问题具有重要参考意义。本文基于Penman-Monteith模型和GIS地统计分析工具,从虚拟水视角分析1986-2012年东北大豆生长季内的需水量变化和虚拟水时空分异特征及其影响因素。结果表明:①1986-2012年,东北地区大豆生长季增温明显,平均风速下降显著,相对湿度整体下降,日照时数有增有减,气候暖干化趋势加剧。 ②东北大豆生长季内需水量西南多东北少,南部地区需水量减少而北部增加。平均风速的显著下降导致大豆需水量减少,其余气象因子变化均导致需水量增加,温度变化对需水量影响最大,相对贡献率为36.9%,其次为相对湿度、日照时数和平均风速。③大豆虚拟水的空间分布整体为西多东少,虚拟水变化以下降为主(80.6%站点)。虚拟水高值区集中于东北地区西部,向东虚拟水含量降低。气候变化导致了大豆需水量的增加,进而使虚拟水上升,大豆生产变化尤其是单产增长则使得虚拟水下降,气候变化对大豆虚拟水的影响抵消了部分大豆生产变化导致的虚拟水下降。因此,针对大豆虚拟水的时空分异特征,适当调整东北地区大豆的生产布局、选取如耐高温耐旱等大豆品种以及调整灌溉、施肥等田间管理措施等是气候变化背景下提高大豆水资源利用效率的有效适应措施。
英文摘要: The uneven distribution of water resources restricts the regional agricultural production. Studying the temporal and spatial characteristics of crop water consumption based on the virtual water methods and theory can improve the rational allocation and utilization efficiency of water resources and alleviate the water resources shortage. This paper studies the temporal and spatial variability of virtual water and the evapotranspiration (ETc) of soybean in Northeast China from the virtual water perspective. The results showed that: (1) During 1986-2012, the temperature of soybean growth season obviously increased and the average wind speed decreased significantly. The relative humidity decreased and the sunshine duration increased or decreased in different districts. The climate warming and drying trend in Northeast China have deteriorated. (2) The water demand (ETc) of soybean in Northeast China was more in southwest than that in northeast, and the water demand in the south decreased while increased in the northern region. Obvious decline of the average wind speed resulted in a decrease in the soybean ETc, and the changes of other meteorological factors caused an increase in soybean ETc, with the temperature as the greatest impact on ETc, accounting for a relative contribution of 36.9%. The factors that follow were relative humidity, sunshine hours and average wind speed. (3) The spatial distribution of soybean virtual water (SVW) was higher in west and lower in east and soybean virtual water reduced in most of the sites (80.6% of the sites) from 1986 to 2012. The areas with higher SVW value were concentrated in the west of Northeast China including most of Liaoning, western Jilin and western Heilongjiang. The virtual water content gradually reduced towards the east. Climate change made soybean virtual water rise by affecting the soybean water demand, but the changes in soybean production, especially in terms of yield increase, had caused soybean virtual water decline. The impact of climate change on soybean virtual water partly counteracted the decline caused by soybean production changes. Therefore, appropriately planning the soybean productive layout in Northeast China, adopting soybean varieties such as high temperature and drought tolerance, and adjusting field management measures such as irrigation and fertilization, according to the spatio-temporal characteristics of soybean virtual water, are effective adaptation measures to improve the utilization efficiency of soybean water resources in the context of climate change.
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/153961
Appears in Collections:气候变化事实与影响

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作者单位: 1.中国科学院地理科学与资源研究所
2.中国科学院大学, 中国科学院陆地表层格局与模拟重点实验室
3.,
4., 北京
5.北京 100101
6.100049, 中国
7.中国科学院地理科学与资源研究所, 中国科学院陆地表层格局与模拟重点实验室, 北京 100101, 中国

Recommended Citation:
代粮,刘玉洁,潘韬. 中国东北三省大豆虚拟水时空分异及其影响因素研究[J]. 地球信息科学学报,2018-01-01,20(9):53-62
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