中国农业气象 ›› 2026, Vol. 47 ›› Issue (7): 1092-1104.doi: 10.3969/j.issn.1000-6362.2026.07.008

• 农业生态环境栏目 • 上一篇    下一篇

三种蒸散模型在辽宁西部樟子松人工林中的适用性评价

高翔,蔡金峰,裴松义,李志鹏,张劲松   

  1. 1. 中国林业科学研究院林业研究所/国家林草局林木培育重点实验室,北京 100091;2. 南京林业大学南方现代林业协同创新中心,南京 210037;3. 河南小浪底森林生态系统国家野外科学观测研究站,济源 454650;4. 国有建平县黑水机械化林场,朝阳 122000
  • 收稿日期:2025-09-15 出版日期:2026-07-22 发布日期:2026-07-21
  • 作者简介:高翔,E-mail:gaoxiang@caf.ac.cn
  • 基金资助:
    国家自然科学基金项目(32301662)

Evaluation of Three Evapotranspiration Models for Pinus sylvestris var. mongolica Plantation in Western Liaoning Province, China

GAO Xiang, CAI Jin-feng, PEI Song-yi, LI Zhi-peng, ZHANG Jin-song   

  1. 1. Research Institute of Forestry, Chinese Academy of Forestry/Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Beijing 100091, China; 2. Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forest University, Nanjing 210037; 3. Henan Xiaolangdi Forest Ecosystem National Observation and Research Station, Jiyuan 454650; 4. State-owned Jianping County Heishui Mechanized Forest Farm, Chaoyang 122000
  • Received:2025-09-15 Online:2026-07-22 Published:2026-07-21

摘要:

以辽宁西部樟子松人工林为研究对象,以2023年和2024年生长季涡度相关系统实测蒸散(ETEC)为标准,评价Penman−Monteith(PM)模型、Shuttleworth−Wallace(SW)模型和改良Priestley−Taylor(PTm)模型在辽宁西部樟子松人工林的适用性,分析三种模型中重要变量的敏感性。结果表明:三种模型模拟蒸散(ETe)均与ETEC具有类似的日内变化和季节变化趋势;2023年和2024年樟子松人工林生长季,PM模型分别低估39.24%27.05%PTm模型则分别低估20.85%和4.75%,SW模型分别低估1.12%和高估5.12%。无论在半小时尺度还是日尺度上,2023年和2024年樟子松人工林生长季SW模型平均绝对误差(MAE)和均方根误差(RMSE)最小,模拟效率(ME)和一致性指数(IA)最大。日尺度上,PTm模型2a樟子松人工林生长季的MAE、RMSE、ME和IA,均处于三种模型中间位置。PM模型和SW模型的阻力变量中,ETe对冠层阻力(rc)最为敏感。三种模型的环境变量中,ETe对根区土壤含水量(θr)最敏感;且rc和θr均在干旱的2023年对ETe影响更大。综上,最适合用于模拟辽宁西部樟子松人工林ET的模型为SW模型,未来应实测ET分量,开展模型在ET拆分效果方面的验证。

关键词: 樟子松人工林, Penman?Monteith模型, Shuttleworth?Wallace模型, 改良Priestley?Taylor模型, 变量敏感性

Abstract:

Accurately simulated evapotranspiration (ET) is important for evaluating the effect of plantation on water cycle in the planting area, and promotes the optimization and management of local water resource. This study focused on the Pinus sylvestris var. mongolica plantations in western Liaoning province. Evapotranspiration measured by eddy covariance system (ETEC) during the growing season in 2023 and 2024 was used to evaluate the applicability of the Penman−Monteith (PM) model, Shuttleworth−Wallace (SW) model and the modified Priestley−Taylor (PTm) model, and analyzed the sensitivity of the important variables in the three models. The results showed that the three models estimated evapotranspiration (ETe) had similar diurnal and seasonal variations to ETEC. However, during the growing seasons of 2023 and 2024, the PM model underestimated by 39.24% and 27.05%, the PTm model underestimated by 20.85% and 4.75%, while the SW model underestimated by 1.12% and overestimated by 5.12%. At half-hour and daily time scales, the SW model had the smallest mean absolute error (MAE) and root mean square error (RMSE), as well as the highest simulation efficiency (ME) and consistency index (IA) during the two growing seasons. At daily time scale, the MAE, RMSE, ME and IA obtained by the PTm model were in the middle of three models during the two growing seasons. For the resistance variables of the PM model and SW model, ETe was the most sensitive to canopy resistance (rc). For the environmental variables of the three models, ETe was the most sensitive to root zone soil moisture content (θr). Both rc and θr had greater impact on ETe in the drought year of 2023. The SW model was the most suitable for simulating ET in the Pinus sylvestris var. mongolica plantation in western Liaoning province. Future studies should measure the ET components and verify the performance of the model in the ET partitioning

Key words: Pinus sylvestris var. mongolica plantation, Penman?Monteith model, Shuttleworth?Wallace model, Modified Priestley?Taylor model, Variable sensitivity