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| 寿县地区小麦和水稻田地表反照率观测分析 | |
| 引用本文： | 余予,李扬云,童应祥,田红,陈洪滨.寿县地区小麦和水稻田地表反照率观测分析[J].气候与环境研究,2009,14(6):639-645. |
| 作者姓名： | 余予 李扬云 童应祥 田红 陈洪滨 |
| 作者单位： | 1. 中国科学院大气物理研究所中层大气与全球环境探测重点实验室,北京,100029;国家气象信息中心,北京,100081;中国科学院研究生院,北京,100049 2. 寿县国家气候观象台,六安,232200 3. 安徽省气候中心,合肥,230061 4. 中国科学院大气物理研究所中层大气与全球环境探测重点实验室,北京,100029 |
| 基金项目： | 国家自然科学基金项目40675017和淮河流域气象开放研究基金HRM200710"淮河流域农田下垫面近地层综合观测研究" |
| 摘 要： | 利用寿县气候观象台2007年10月～2008年9月地表反射率观测资料,分析了农田地表反照率的季节变化,对比了小麦和水稻在不同生长期的平均反照率,讨论了天气状况和天气过程对反照率的影响.结果表明,在小麦和水稻的生长期内,地表反照率变化相似,均先增大后减小.在作物生长初期,水稻田平均反照率低于小麦田反照率约0.02;中期时,两者相近;成熟后,水稻反照率高于小麦反照率约0.04.降水过后,晴空地表反照率减小. |
| 关 键 词： | 地表反照率 小麦 水稻 生长期 |
Observation and Analysis of Surface Albedo of Wheat and Rice Fields in Shouxian Region |
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| YU Yu,LI Yangyun,TONG Yingxiang,TIAN Hong and CHEN Hongbin.Observation and Analysis of Surface Albedo of Wheat and Rice Fields in Shouxian Region[J].Climatic and Environmental Research,2009,14(6):639-645. | |
| Authors: | YU Yu LI Yangyun TONG Yingxiang TIAN Hong and CHEN Hongbin |
| Abstract: | Based on the surface albedo measured from October 2007 to September 2008 at the Shouxian National Climate Observatory, the seasonal variations of farmland albedo are analyzed, the average wheat albedo and rice al-bedo in each growth stage are compared, and the effects of different weather condition and weather process on albedo are discussed.The results show that the variations of wheat albedo and rice albedo have broadly the same type that both increase to a relatively high level and then decrease. In the early growth stage, the average rice albedo is lower than that of wheat by 0.02, while the two values are approximately equal in the middle growth stage, but the former becomes higher than the latter by 0.04 when the two crops are mature.After precipitation, diurnal surface albedo under clear sky is less than that observed before the weather process. |
| Keywords: | surface albedo wheat rice growth stage |
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