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基于貝葉斯分析的干熱河谷區(qū)橙子林冠層蒸騰耗水模擬
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國家自然科學基金青年基金項目(51909232)和中國博士后基金面上項目(2019M663588)


Canopy Transpiration Water Consumption Simulation of Orange Forest in Dry and Hot Valley Area Based on Bayesian Analysis
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    摘要:

    需耗水機制是進行農(nóng)田/果園水分管理和調(diào)控的基礎,。本文聚焦蒸騰耗水機制,基于貝葉斯參數(shù)估計方法對比了不同Jarvis-Stewart模型配置對干熱河谷區(qū)橙子林蒸騰耗水量的模擬效果,,探索了Jarvis-Stewart模型在影響因子交互效應較強條件下蒸騰耗水模擬中的適用性,。結(jié)果表明,考慮不同影響因子及其限制函數(shù)會對模擬效果產(chǎn)生較大影響,,其中考慮土壤含水率和葉面積指數(shù)對模擬效果改善作用明顯,,而引入飽和水汽壓差和氣溫則不同程度地降低模擬精度;考慮的影響因子越多,,模型結(jié)構(gòu)越復雜,,模擬效果不一定越好;篩選出的最佳模型結(jié)構(gòu)基本實現(xiàn)了橙子林蒸騰耗水的可靠模擬,,但模擬效果仍有明顯改進空間,,因此,應綜合考慮模型復雜程度,、模擬精度及不確定性等,,進一步探究適宜的模型結(jié)構(gòu)。研究可為果園節(jié)水灌溉技術(shù)體系建立和水分管理優(yōu)化提供科學依據(jù),也能為耗水模型的進一步發(fā)展和完善提供理論支撐,。

    Abstract:

    The mechanism of water consumption is the basis for management and regulation of water in farmland/orchards. Focusing on the transpiration mechanism of water consumption, the simulation effect of different Jarvis-Stewart model configurations on transpiration consumption in orange forests in dry and hot valleys was compared based on Bayesian parameter estimation methods, and the applicability of Jarvis-〖JP〗Stewart model in the simulation of transpiration water consumption under the condition of strong interaction effect of influence factors was explored. The results showed that considering different influencing factors and their limiting functions would have a great impact on the simulation effect, among which considering soil moisture content and leaf area index had obvious effects on the improvement of the simulation effect, while the introduction of saturated water vapor pressure difference and air temperature would reduce the simulation accuracy to varying degrees. The more impact factors considered, the more complex the model structure was, and the better the simulation effect was. The best model structure screened out basically realized the reliable simulation of water consumption of transpiration in orange forest, but there was still obvious room for improvement in the simulation effect, so the model complexity, simulation accuracy and uncertainty should be comprehensively considered to further explore the appropriate model structure. The research can provide scientific basis for the establishment of water-saving irrigation technology system and water management optimization in orchards, and also provide data support for the further development and improvement of water consumption models.

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張晶瑩,陳滇豫,馬永勝,胡笑濤,杜敬斌,王書劍.基于貝葉斯分析的干熱河谷區(qū)橙子林冠層蒸騰耗水模擬[J].農(nóng)業(yè)機械學報,2024,55(1):305-315. ZHANG Jingying, CHEN Dianyu, MA Yongsheng, HU Xiaotao, DU Jingbin, WANG Shujian. Canopy Transpiration Water Consumption Simulation of Orange Forest in Dry and Hot Valley Area Based on Bayesian Analysis[J]. Transactions of the Chinese Society for Agricultural Machinery,2024,55(1):305-315.

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  • 收稿日期:2023-05-07
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  • 在線發(fā)布日期: 2023-06-22
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