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.
出处
《河北农业大学学报》
CAS
CSCD
北大核心
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)
关键词
高羊茅草坪
冠气温差
环境因子
时间变化
tall rescue lawn
canopy-air temperature difference
environmental factors
tempo- ral variation.
