摘要
以全球变暖为主线的气候变化已被世界公认。气候变化会影响到农业气候资源的变化,从而影响农业生产的格局、作物品种布局、粮食产量等。为此,利用唐山地区11个气象观测站1961—2008年日平均气温和逐日降水资料,运用最小二乘法进行线性倾向估计,分析唐山地区主要农业气候资源时间、空间变化趋势及其差异,为政府部门指导农业生产、发展设施农业和名优农产品开发、引进、农业气候资源利用论证提供决策依据。结果表明:唐山地区热量均呈增加趋势,西南部热量增加趋势明显,东北部热量增加较缓;≥0℃活动积温、≥10℃活动积温的变化与年平均气温的变化密切相关;年降水量表现为减少趋势,且年际间变化较大。
The global warming for climate change has been recognized in the world. The climate change will affect the change of agricultural climate resource of agricultural production,thereby affecting crop varieties,layout,the grain yield,etc. The temporal and spatial tendency,differences of agricultural climate resources in Tangshan area was analyzed by using linear-trend estimate,based on the daily air temperature and precipitation from 1961 to 2008 form 11 meteorological stations. Analysis on agricultural climate resource for government departments to guide agricultural production,the development of facilities agriculture and agricultural development,introduction,the famous agricultural climate resource utilization argument provides basis for decision-making. The results indicated that the heat increased greatly,and it was greatly in southwest place than northeast place. The inter-annual change between the annual accumulated temperature ≥0 ℃,the annual accumulated temperature ≥10 ℃ and the air temperature existed a corresponding relationship. The annual precipitation decreased,and the fluctuation of precipitation inter-annual was intensified.
出处
《中国农学通报》
CSCD
北大核心
2010年第20期318-323,共6页
Chinese Agricultural Science Bulletin
关键词
唐山
气温
积温
降水
变化特征
Tangshan area； air temperature； accumulated temperature； precipitation； changing characteristics；
