應用陸表過程模式模擬森林通量;Simulation forest fluxes with land process model

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题名:	應用陸表過程模式模擬森林通量;Simulation forest fluxes with land process model
作者:	柯景傑;Ko, Jing-Jie
贡献者:	水文與海洋科學研究所
关键词:	潛熱;可感熱;陸表過程模式;ORCHIDEE
日期:	2019-01-28
上传时间:	2019-04-02 14:21:05 (UTC+8)
出版者:	國立中央大學
摘要:	本研究目的主要是應用陸表過程模式(ORCHIDEE)探討森林陸氣間能量與水氣交互作用，模擬蓮華池(LHC)的陸表過程並與渦流協變法觀測通量值做比較，一方面評估 ORCHIDEE 在蓮華池森林試驗集水區的適用性，一方面也透過模式模擬來探討地表植被陸氣間交互作用機制與特徵，加強對森林陸表過程變化特性的瞭解。 ORCHIDEE模擬所需大氣資料，包含長短波幅射、風速、氣溫、雨量、氣壓等，陸表資料包含樹種種類、分佈比例與土壤類型等。模擬結果與蓮華池測站觀測地表通量、土壤含水量與表面溫度等比較，評估模式是否足以掌握研究區域陸表過程特性，並進一步探討改變大氣因子與植被覆蓋比例對陸表通量變化之影響，探討影響通量變化之主要環境因子與特徵。 ;This study applied the land surface process model, Organizing Carbon and Hydrology In Dynamic EcosystEms (ORCHIDEE), to simulate interactions between atmosphere and forests at the Lien-Hua-Chih (LHC) experimental watershed and compare with fluxes measured by the eddy covariance method. The objectives are to evaluate the skill of ORCHIDEE on simulating the land processes at the LHC and to investigate mechanisms and characteristics of land-atmosphere interactions to improve our understanding on forest land processes. Simulations of the ORCHIDEE require several atmospheric data including long- and short-wave radiations, wind speed, air temperature, rainfall, and atmospheric pressure. Simulations also need surface data of plant function types (PFT) with distributions and soil types. Simulated results were compared with observed surface fluxes, soil moistures, and surface temperatures to evaluate whether the model is capable to describe variations of land processes at the LHC. Sensitivity analyses were performed to investigate how changes in atmospheric conditions and PFT distributions might affect forest surface fluxes.
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