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基于不同时间尺度玉米蒸散蒸腾量及其影响因素
  • ISSN号：1007-7588
  • 期刊名称：《资源科学》
  • 时间：0
  • 分类：S513[农业科学—作物学]
  • 作者机构：[1]兰州大学资源环境学院, [2]兰州大学西部环境教育部重点实验室干旱环境与气候变化协同创新中心
  • 相关基金：国家自然科学基金创新群体项目(编号:40721061)
作者： 郭映[1], 董阳[2], 党慧慧[1], 董军[1], 魏国孝[1,2]
关键词： 涡度相关, 茎流, 蒸散, 蒸腾, 环境因子, 玉米
中文摘要：

运用涡度相关仪、包裹式茎流计对半干旱区玉米蒸散和蒸腾进行连续观测,并对田间土壤水势及其周围气象因子进行同步监测,分析了玉米蒸散和蒸腾在不同时间尺度上的变化过程及其影响因素,结果表明:①涡度相关仪测定的日蒸散量和茎流计测定的日腾量变化规律一致,相关性较好,但日内蒸散速率和蒸腾速率的变化受环境因子的影响而呈现不同的变化特征;②不同深度土壤水分状况对玉米蒸散和蒸腾存在不同影响。对玉米蒸散起较大作用的是地表以下10~15cm深处的土壤水势,而对玉米蒸腾起较大作用的是15~20cm深处的土壤水势;③在不同时间尺度上,太阳辐射始终是影响玉米蒸散和蒸腾的最主要气象因子;但在日内变化上,玉米蒸散速率和蒸腾速率与太阳辐射和饱和水汽压差均存在较好的相关关系。

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期刊信息
  • 《资源科学》
  • 中国科技核心期刊
  • 主管单位:中国科学院
  • 主办单位:中国科学院地理科学与资源研究所
  • 主编：成升魁
  • 地址：北京安定门外大屯路甲11号
  • 邮编：100101
  • 邮箱：zykx@igsnrr.ac.cn
  • 电话：010-64889446
  • 国际标准刊号：ISSN：1007-7588
  • 国内统一刊号：ISSN：11-3868/N
  • 邮发代号:82-4
  • 获奖情况:
  • 国内外数据库收录:
  • 日本日本科学技术振兴机构数据库,中国中国人文社科核心期刊,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:42316