| Cite this article: | 郑润桥,费良军,介飞龙,等.区域灌溉需水量时空变化特征及其影响因素研究 ——以鲁西北地区为例[J].灌溉排水学报,0,():-. |
| zhengrunqiao,feiliangjun,jiefeilong,et al.区域灌溉需水量时空变化特征及其影响因素研究 ——以鲁西北地区为例[J].灌溉排水学报,0,():-. |
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| DOI： |
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| Study on Spatial-Temporal Variation Characteristics of Regional Irrigation Water Requirement and its Influencing Factors —Take Northwest Region of Shandong Province as an Example |
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zhengrunqiao1,2,3, feiliangjun1,2,3, jiefeilong1,2,3, liulihua1,2,3, liunian1,2,3, Yan Siyu4
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1.Xi'2.'3.an University of Technology;4.Xi 'an University of Technology
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| Abstract: |
| 【Object】In order to explore the temporal and spatial distribution characteristics and influencing factors of irrigation water demand in the northwest of Shandong province and to guide the rational allocation of agricultural water resources.【Methods】This paper calculates irrigation water requirement in the northwest of Shandong Province with Penman-Monteith formula, and analyses its variation trend with Mann-Kendall trend test, obtaining the time distribution law of irrigation water requirement in the northwest of Shandong Province. Meanwhile, the Inverse Distance Weighting(IDW)Interpolation Method is applied to obtain the spatial distribution law of irrigation water requirement. The Pearson correlation analysis method is also used to analyze and compare the meteorological factors and the influence degree of irrigation water requirement.【Results】The spatial interpolation results of irrigation water demand of Dezhou, Huimin, Yangjiaogou, Chaocheng and Jinan meteorological stations from 1960 to 2015 and multi-year average irrigation water demand were calculated, and the correlation coefficients between irrigation water demand and meteorological elements were obtained.
【Conclusion】The results show that: (1) the annual average irrigation water demand in the northwest of Shandong Province is 339 mm, and the inter-annual variation shows an upward trend; (2) the distribution of spatial variation of irrigation water demand is ring-shaped, with different laws in each growth period; (3) relative humidity and sunshine duration are the most important factors affecting irrigation water quantity in the northwest of Shandong province, showing extreme negative correlation and strong positive correlation respectively. |
| Key words: irrigation water requirement; spatial-temporal variation; influencing factors; future trend |
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