生态学报2017，Vol.37Issue(7)：2368-2381,14.DOI:10.5846/stxb201512142497
气候变化背景下松嫩平原玉米灌溉需水量估算及预测
Estimation and prediction of maize irrigation water requirement based on climate change in Songnen Plain, NE China
摘要
Abstract
It is important to study crop water requirement rule for water-saving irrigation and water regulation management of dry land crops in arid and semi-arid regions.In this study,the maize water requirement was estimated by means of McCloud model and Penman-Monteith model,and the amount of irrigation water in maize field was estimated by water balance approach in Songnen Plain,NE China.The main results are shown below:(1) both in historical period and projected climate change scenario,the maize irrigation water amount contour lines during the whole growth period and Lmid periods decreased along southwest to northeast geographically,and the same irrigation water amount contour line moved north with the progression of decades.Compared with 1970s,the zero equipotential line of irrigation water requirement during the whole growth period and Lmid period in 2000s moved to north by 70.2 km and 53.4 km,respectively.Compared with 2010s,the zero equipotential line of irrigation water requirement during the whole growth and Lmid periods in 2040s moved to north by 30.9 km and 55.2 km,respectively.(2) The maize irrigation water requirement during the whole growth period increased volatility coupled with the progression of decades both in historical conditions and in projected climate change scenarios,and the rate of the increase was 29.1 mm/(10a) in historical period and 17.5 mm/(10a) in projected climate change scenarios.(3) Compared with 1970s,contribution of climate change to the maize irrigation water requirement was 22.1％ in 2000s and 38.3％ in 2040s,namely an increase of 6.8×108 m3 in irrigation water requirement in 2000s and an increase of 12.6×10s m3 in irrigation water requirement in 2040s.关键词
气候变化/有效降雨量/玉米需水量/灌溉需水量/气候变化贡献率Key words
climate change/effective rainfall/maize water requirement/irrigation water requirement/contribution rate of climate change引用本文复制引用
黄志刚,肖烨,张国,曹云,彭保发..气候变化背景下松嫩平原玉米灌溉需水量估算及预测[J].生态学报,2017,37(7):2368-2381,14.基金项目
国家自然科学基金项目(31100320) （31100320）
国家重点基础研究发展计划(973计划,2010CB428404) （973计划,2010CB428404）
河南省教育厅高校重点科研项目(15A180052) （15A180052）
洞庭湖生态经济区建设与发展湖南省协同创新中心联合支助 （）
