摘要
通过整理延安宝塔区1980—2007年气象资料,在分析延安气候变化趋势的基础上,应用Thornth-waite Memorial模型,计算了气候生产力变化情况。结果表明,该区降雨量以2.73 mm/a的速度递减,气温以0.05℃/a的速度递增,风速和相对湿度的变化趋势是逐年递减,日照时数的变化趋势是逐年递增。气候生产力总体呈增加趋势,但递增幅度不显著;降雨量是该区气候生产力提高的主要限制因子,"暖湿型"气候对作物气候生产力最有利。
Based on the meteorological data from meteorological station in Baota District, Yan＇ an City from 1980 to 2007, climate change at the beginning is analyzed and the change of climatic productivity is calculated by using Thornthwaite Memorial model. Results show that rainfall amount decreases by 2.73 mm/a and temperature increases by 0.05 ℃/a. Wind speed and relative humidity are decreasing and sunshine hour is increasing. Climatic productivity in Yan＇an area is increasing but not significant. Rainfall is an important limiting factor for climatic productivity and the ＂warm-wet＂ climate is the most beneficial for crop climatic productivity.
出处
《水土保持通报》
CSCD
北大核心
2008年第6期151-154,共4页
Bulletin of Soil and Water Conservation
基金
国家科技支撑项目(2006BAD09B07)
中国科学院西部项目(kzcx2-xb2-05)
陕西省科技攻关项目(2007K01-21)
关键词
气候
气候生产力
黄土丘陵沟壑区
延安市
climate
climatic productivity
loess hilly and gully area
Yan＇an City
