天山云杉雪盖面积估算树冠截留雪水当量实验分析  

Experimental analysis for estimating the canopy snow water equivalent intercepted by the snow cover area of the Tianshan spruce

作　　者：王毅帆 谢玲 常顺利[1] 刘素红[1,2] 玛丽亚木·玛木提 米尔扎提·依明[1] 阿卜杜外力·阿卜杜克热木 WANG Yi-fan;XIE Ling;CHANG Shun-li;LIU Su-hong;Mariam Mamuti;Mirzati Yimin;Abdowli Abdukrmu(College of Resources and Environmental Sciences,Xinjiang University,Urumqi 830046,Xinjiang,China;Department of Geography,Beijing Normal University,Beijing 100875,China;College of Environment and Resources,Guangxi Normal University,Guilin 541004,Guangxi,China)

机构地区：[1]新疆大学资源与环境科学学院,新疆乌鲁木齐830046 [2]北京师范大学地理学部,北京100875 [3]广西师范大学环境与资源学院,广西桂林541004

出　　处：《干旱区研究》2020年第2期341-348,共8页Arid Zone Research

基　　金：国家自然科学基金(41861053)。

摘　　要：雪水当量是一个能直观反映出积雪水资源量的重要指标,准确而全面地获取天山云杉树冠截留雪水当量信息,对于提高天山水资源量计算精度方面具有重要意义。本文以天山云杉树苗为研究对象,通过模拟降雪,进行降雪截留实验研究。利用数码照相机获取云杉的雪盖面积、高精度天平称量树冠上截留的雪水质量,进而建立起云杉树苗雪盖面积和雪水当量之间的关系。实验结果表明:多株云杉树苗多次模拟降雪,树冠截留的雪水当量和垂直朝下数字摄影获得的雪盖面积之间拟合曲线趋于一致,且拟合回归方程满足y=21.235χ^2-1.457χ(R^2=0.992 5);通过云杉多次模拟降雪实验,构建云杉雪盖面积与树冠截留的雪水当量模型,提出一套利用雪盖面积较为准确估算树冠截留雪水当量的科学方法,为天山云杉树冠截留降雪及其雪水当量提供高精度估算模型。The snow water equivalent is an important indicator that can directly reflect the amount of snow waterresources.An accurate and comprehensive acquisition of snow water equivalent data intercepted by the Tianshan spruce canopy is of considerable significance to improve the calculation accuracy of the Tianshan water resources.In this study,experiments were conducted to investigate the snow interception of spruce using simulated snow and the Tianshan spruce saplings.The snow cover area of the spruce was obtained using a camera,and the mass of the spruce canopy interception water was measured using a high-precision balance.Further,the relation between the snow cover area and the snow water equivalent was established.The experimental results show that the fitting curves between the snow water equivalent of the spruce canopy interception water and the spruce snow cover area obtained via vertical downward digital photography tend to be consistent for multiple spruce saplings over several simulated snowfall events;the fitted regression equation is y = 21.235χ^2-1.457χ(R^2= 0.992 5).Using repeated simulations of the spruce snowfall experiment,the snow cover and snow water equivalent of the spruce canopy interception models were obtained.Accordingly,a scientific method has been proposed to estimate the snow water equivalent of the spruce canopy interception based on the snow cover to provide a high-precision estimation model with respect to the intercepted snowfall and snow water equivalent of the Tianshan spruce canopy.

关 键 词：天山云杉 树苗 模拟降雪 雪盖面积 数字照片 雪水当量 估算模型 

分 类 号：P426.635[天文地球—大气科学及气象学]