中文摘要：

试验使用红外热像仪和热平衡树干液流计（SHB）对延怀盆地中科院遥感试验站内的侧柏人工林样木进行为期1年的定点连续观测。结果表明：侧柏液流速率（F）与冠层地表组分温度（T_c和T_s）及冠地组分温差（ΔT）具有明显的周期性日变化、昼夜变化、季节变化规律,并受天气状况的影响呈现不同的变化规律;液流速率（F）与组分温差（ΔT）在瞬时尺度、日尺度、旬尺度下具有明显的负相关性;拟合结果优于传统的冠气温差法,摆脱了对地面气象站的依赖;一年中侧柏累计液流通量（F_acc）呈线性递增。研究为通过遥感反演组分温差进行区域植被蒸腾耗水量估计和监测提供了新了思路和方法。

英文摘要：

One year continuous field monitoring was conducted on sample Platycladus orientalis（ L.） Franco trees in Huailai Remote Sensing Testing Site of the Chinese Academy of Sciences using thermal infrared imager and SHB sap-flow instrument. Significant periodic daily,diurnal and seasonal variations were found out among the variation law of the sap flow velocity（ F）,the component temperature of soil surface（ T_s） and canopy surface（ T_c） and their difference（ ΔT）. And the climate has a great impact on these variation patterns.A significant negative correlation was found between the F and the ΔT with different time scale. Compared with traditional temperature difference method,this new model better fits the reality,which eliminates the use of surface weather stations. In addition,there was an increasing linear trend between the cumulative sap flow flux versus the day of year（ d）. The current research has provided new thoughts and ways for the monitoring and prediction of water consumption during the process of plant transpiration by remote sensing inversion methods of components temperature difference.