發(fā)布時間：2018-03-11 03:02

  本文選題：能量閉合　切入點：能量儲存分項　出處：《冰川凍土》2016年03期 　論文類型：期刊論文

【摘要】：植被大氣間能量儲存分項對能量閉合的影響在地表能量平衡研究中有重要意義.以張掖市盈科灌區(qū)玉米農(nóng)田為研究區(qū),在采用TDEC(Thermal Diffusion Equation+Correction)方法修正土壤熱通量的基礎上,分析了植被大氣間能量儲存分項對能量閉合率的影響.結果表明:能量儲存分項對于能量閉合率具有一定的提升作用,平均提升幅度約為5.18%.能量儲存分項對能量閉合率的影響與有效能量(Rn-G)相關.各能量儲存分項對能量閉合率的貢獻從大到小依次為:光合作用植被冠層熱儲存空氣熱儲存空氣濕度變化≈露水焓變,其中后兩項量級極小,可在相關研究中忽略.量級較大的前三項能量分項具有明顯的單峰日變化趨勢,其中光合作用項相對另兩分項在時間上有所滯后.此外,不同天氣條件下(如有云和無云)能量儲存分項對于能量閉合率的影響不同,有云時其影響相對較大.
[Abstract]:The effect of energy storage in vegetation atmosphere on energy closure is of great significance in the study of surface energy balance. Taking maize farmland in Yingke Irrigation District of Zhangye City as the study area, the TDEC(Thermal Diffusion Equation Correction (TDEC(Thermal) method is used to modify the soil heat flux. The effect of energy storage component between vegetation and atmosphere on energy closure rate is analyzed. The results show that energy storage component can improve energy closure rate to some extent. The effect of energy storage component on energy closure rate is related to effective energy rn-G. The contribution of energy storage component to energy closure rate is in order of photosynthesis vegetation canopy thermal storage air. Heat storage air humidity variation 鈮，

本文編號：1596265