文献类型：期刊文献

英文题名：Integrated effects of rainfall regime and canopy structure on interception loss: A comparative modelling analysis for an artificial larch forest

作者：Tu, Lihui[1];Xiong, Wei[2];Wang, Yanhui[1];Yu, Pengtao[1];Liu, Zebin[1];Han, Xinsheng[3];Yu, Yipeng[1];Shi, Zhongjie[2];Guo, Hao[2];Li, Zhenhua[4];Wang, Xiao[1];Xu, Lihong[1]

第一作者：Tu, Lihui

通讯作者：Xiong, W[1]

机构：[1]Chinese Acad Forestry, Inst Forest Ecol Environm & Protect, Beijing, Peoples R China;[2]Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China;[3]Ningxia Acad Agr & Forestry Sci, Inst Desertificat Control, Yinchuan, Ningxia, Peoples R China;[4]Xinxiang Univ, Sch Civil Engn & Architecture, Xinxiang, Henan, Peoples R China

第一机构：Chinese Acad Forestry, Inst Forest Ecol Environm & Protect, Beijing, Peoples R China

通讯机构：[1]corresponding author), Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China.

年份：2021

卷号：14

期号：4

外文期刊名：ECOHYDROLOGY

收录：;EI(收录号：20210809943456);Scopus(收录号：2-s2.0-85100863310);WOS:【SCI-EXPANDED(收录号:WOS:000617372900001)】；

基金：National Natural Science Foundation of China, Grant/Award Number: 31971724; Ningxia Hui Autonomous Region, Grant/Award Number: QCYL-2018-12; Government of Inner Mongolia Autonomous Region, Grant/Award Number: 2019ZD00301-02; State Forestry Administration of China, Grant/Award Number: 2015BAD07B03

语种：英文

外文关键词：interception loss; larch plantation; leaf area index; rainfall regime; revised Gash model; Wang model; wet evaporation

摘要：Model optimization is essential for accurately simulating rainfall interception loss (I) in artificial forests and for quantifying the influence of canopy structure, rainfall regime, and meteorological variables on I. Herein, the revised Gash (addressing physical mechanisms) and Wang (addressing canopy structural impacts) models were used for comparative I simulations using a larch plantation in NW China. We used throughfall (T-f) and stemflow (S-f) measurements from the growing seasons of three consecutive years and found that from the total rainfall measured (1371.6 mm) in 59 selected rain events, T-f, S-f, and I accounted for 80.8%, 1.6%, and 17.6%, respectively. Surprisingly, the two tested models showed similar behaviours in their I simulations, with their performances classified as "very good," exhibiting 5% and 2.3% cumulative I relative errors for the revised Gash and Wang models, respectively. We noted that, although I was well simulated for light-moderate rain events (<25 mm), absolute errors increased significantly as rainfall amount and duration increased, owing to the constant evaporation rate applied in the models. Leaf area index (LAI) explained 40% of the water detention variation in the canopy, rather than I, which only reflected canopy storage capacity dynamics during the growing season. Collectively, our results revealed that models only addressing the independent impact of wet evaporation or structural dynamics are inadequate for accurately simulating I during heavy rain events (>25 mm). Therefore, future models should account for the potential errors arising from evaporation estimation and consider the effects of LAI.