ZHANG Xin,YANG Zai-qiang,WEI Rui-jiang,et al.Study on Spatial and Temporal Distribution of Sunshine Deficiency Probability for Facility Agriculture in Hebei Province[J].Northern Horticulture,2015,39(01):53-57.[doi:10.11937/bfyy.201501015]
河北省设施农业寡照概率时空分布规律的研究
- Title:
- Study on Spatial and Temporal Distribution of Sunshine Deficiency Probability for Facility Agriculture in Hebei Province
- Keywords:
- Keywords:sunshine deficiency; probability; spatial and temporal distribution; Hebei Province
- 文献标志码:
- A
- 摘要:
- 摘 要：基于河北省141个气象观测台站1981—2012年日照观测资料的统计，结合寡照灾害指标利用K-means聚类分析法对冷半年（10月至翌年4月）和暖半年（5—9月）设施农业寡照灾害的时空分布特征进行了分析。结果表明：冷半年全省分为东南部和西北部2个分区，东南部分区从11月第2候至翌年1月第4候是易发寡照和持续性寡照的时段，西北部分区发生寡照的可能性整体相对较小，近30年2个分区不同强度的寡照事件发生次数均呈显著上升趋势；暖半年全省分为南部、中部和东北部、西北部3个分区，前2个分区易发寡照的时段都是7月第2候至8月第4候，中部和东北部分区从8月第5候开始寡照概率较南部分区明显减小，西北部分区发生寡照的可能性整体相对较小，近30年南部与中部和东北部分区不同强度的寡照事件发生次数都呈显著上升趋势，该研究为河北省设施农业生产布局及寡照灾害防御提供依据。
- Abstract:
- Abstract:The spatial and temporal distribution of sunshine deficiency probability for agriculture in Hebei province was examined both for the cold seasons (October to April) and the warm seasons (May to September) of the year by clustering analysis,based on the statistics of the sunshine duration observations from 141 meteorological stations during 1981 to 2012.The results showed that in the cold seasons the province was divided into two districts,i.e.the Southeast and the Northwest.High probability of agricultural sunshine deficiency and persistent deficiency in the Southeast occured mainly during November 6 to January 20.The incidence of agricultural sunshine deficiency in the Northwest was overall relatively small.Significant increasing trends were detected in sunshine deficiency events with different grades for the two districts during the recent 30 years.The province was divided into three districts in the warm seasons,i.e.the South,the Central-Northeast and the Northwest.High probability of agricultural sunshine deficiency in the South and the Central-Northeast occured mainly during July 6 to August 20.The incidence of agricultural sunshine deficiency in the Central-Northeast was obviously smaller than that in the South during August 21 to September 30.The incidence in the Northwest was overall relatively small.Significant increasing trends were detected in sunshine deficiency events with different grades for the South and the Central-Northeast during the recent 30 years.
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备注/Memo
第一作者简介：张欣（1983-），男，硕士研究生，研究方向为设施农业气象服务。E-mail：hebqx_xin@126.com.责任作者：杨再强（1967-），男，博士，教授，博士生导师，现主要从事设施作物环境调控机理等研究工作。E-mail：yzq@nuist.edu.cn.基金项目：国家公益性行业（气象）科研专项资助项目（GYHY201306039）。