摘要
为了揭示全球气候变化背景下湖南农业气候资源的变化特征。利用湖南省97个台站1960—2010年逐日气象观测资料,在进行均一性检验和订正的基础上,分析湖南省农业气候资源时间、空间变化趋势及其差异。结果表明:湖南气温与全球气温变化趋势一致,呈现以变暖为主要特征的气候变化,相对应的热量资源也呈现为显著增多的变化趋势,以活动积温对气候变暖响应最敏感;湖南降水量无显著趋势变化,但在不同季节、不同地区的变化趋势差异较大,冬季湘北地区呈显著增多趋势,春季湘西地区呈显著减少趋势,夏季湘中地区呈显著增多趋势,秋季湘西南地区呈显著减少趋势;日照时数呈现以夏季显著减少为主要特征的变化趋势,减少幅度最大的地区位于湘江中下游地区。气候变化导致湖南省农业气候资源发生变化,进而影响到农业生产布局和结构,需合理利用气候资源,提高农业适应气候变化的能力。
In order to reveal the variation characteristics for Hunan agricultural climate resources on the background of global climate change,the meteorological data of 97 observation stations from 1960 to 2010 in Hunan Province which had been treated by homogeneity test and correction was used to analyze the temporal and spatial tendency,differences of agricultural climate resources.The results showed that warming was the main characteristics of climate change in Hunan which was consistent with the global,accordingly,heat resources of Hunan presented a significant upward trend,especially the active accumulated temperature.The linear trend of precipitation in Hunan was not significant,but presented seasonal and regional differences,in winter the significant upward trend of precipitation was presented in northern areas of the Hunan Province,and in summer it was presented in central region;in spring the significant downward trend of precipitation was presented in western areas,and in summer it was presented in central region.Sunshine hours presented a significant downward trend especially in summer,and the largest decrease magnitudes presented in the middle and lower reaches of Xiangjiang River.Climate change caused the change of agricultural climate resource,thereby affecting layout and structure of agricultural production and crop planting.Reasonable utilization of climate resources and improvement on the ability of agricultural adaptation to climate change will be needed in future.
出处
《中国农学通报》
CSCD
2012年第8期287-293,共7页
Chinese Agricultural Science Bulletin
基金
中国气象局气候变化专项"洞庭湖地区气候资料序列构建与气候变化事实"(200920)
中国气象局2009年业务建设项目"精细化农业气候区划试点"(200902)
湖南省气象局重点科研项目"气候预测和气候变化影响评估与应对技术研究"(200801)
关键词
农业
气候资源
气候变化
响应
agriculture
climate resources
climate change
response
作者简介
廖玉芳，女，1962年出生，正研高工，本科，主要从事气候和气候变化研究。E-mail：lyf_13975681873@163．com。
通讯作者：彭嘉栋，男，1984年出生，江西萍乡人，工程师，硕士，主要从事气候资料和气候变化研究。通信地址：410007长沙市黄土岭路2眄号湖南省气候中心，Tel：0731—85600089，E—mail：14865976@qq．corn。
