高羊茅成坪期冠气温差时间变化特征及其环境影响因子关系研究  

Study on the canopy-air temperature difference of tall fescue lawn and it's environmental factors in turf grasses establishment period

作　　者：邓娟娟[1] 李春友[1] 阚颖欣 彭伟秀[1] 王中华[1] 张培[1] 杨会娟[1] 

机构地区：[1]河北农业大学园林与旅游学院,河北保定071000

出　　处：《河北农业大学学报》2014年第1期49-53,共5页Journal of Hebei Agricultural University

基　　金："十二五"农业领域国家科技计划课题(2011BAD38B02)

摘　　要：2013年5-7月开展了高羊茅(Festuca arundinacea)草坪的环境因子(空气温度、空气相对湿度、太阳总辐射、冠层净辐射、土壤含水量和风速)的实时观测,以其实际测定值来测算高羊茅草坪成坪期连续时段的冠气温差值,研究不同天气条件下的草坪冠气温差日变化规律、灌水条件下的冠气温差日变化规律,并分析草坪冠气温差与环境因子的数量关系。结果表明:冠气温差与RH和VPD的相关性极显著,可用作为诊断草坪水分状况的重要指标,为草坪草水分状况诊断提供重要的参考依据。During May to July in 2013, environmental factors were observed in real-time inclu- ding air temperature, air relative humidity, total radiation, net radiation, soil water content, wind speed on the lawn, and the canopy-air temperature difference of the tall rescue lawn con- ditions was calculated in continuous-time period. This paper studied the diurnal variation of canopy-air temperature difference under different irrigation and weather conditions and analyzed their data characteristics of environmental impact. The correlation equation between Tc- Ra, and environmental factors show that canopy-air temperature difference has a good relationship with RH and VPD, which can reflect soil water status well and provide theoretical basis for the soil water content of the lawn＇s diagnosis.

关 键 词：高羊茅草坪 冠气温差 环境因子 时间变化 

分 类 号：S688.4[农业科学—观赏园艺]