[1]张仓皓,刘小杰,王瑞璠,等. 基于PROSAIL模型的毛竹林冠层含水量反演研究[J].西北林学院学报,2023,38(4):224-232.[doi:10.3969/j.issn.1001-7461.2023.04.28]
　ZHANG Cang-hao,LIU Xiao-jie,WANG Rui-fan,et al. A Study on Canopy Water Content Inversion of Phyllostachys edulis Forest Based on PROSAIL Model[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2023,38(4):224-232.[doi:10.3969/j.issn.1001-7461.2023.04.28]
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 基于PROSAIL模型的毛竹林冠层含水量反演研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第38卷
期数:
2023年第4期
页码:
224-232
栏目:
出版日期:
2023-07-31

文章信息/Info

Title:
 A Study on Canopy Water Content Inversion of Phyllostachys edulis Forest Based on PROSAIL Model
文章编号:
1001-7461(2023)04-0224-09
作者:
 张仓皓1; 3; 刘小杰1; 3; 王瑞璠1; 3; 魏倪彬1; 3; 刘健1; 3; 余坤勇1; 3; 郭孝玉2; 王帆1; 3*
 （1.福建农林大学 林学院，福建 福州 350002；2.福建省资源环境监测与可持续经营利用重点实验室（三明学院），福建 三明 365004；3.3S技术与资源优化利用福建省高校重点实验室，福建 福州 350002）
Author(s):
 ZHANG Cang-hao1; 3; LIU Xiao-jie1; 3; WANG Rui-fan1; 3; WEI Ni-bin1; 3; LIU Jian1; 3; YU Kun-yong1; 3; GUO Xiao-yu2; WANG Fan1; 3*
 (1.College of Forestry,Fujian Agriculture and Forestry University,Fuzhou 350002,Fujian,China; 2.Fujian Provincial Key Laboratory of Resources and Environment Monitoring and Sustainable Management and Utilization,Sanming University,Sanming 365004,Fujian,China; 3.Fujian Province Key Laboratory of 3S Technology and Optimal Utilization of Resources,Fuzhou 350002,Fujian,China)
关键词:
 ; 冠层含水量; PROSAIL; 毛竹; Sentinel-2B; 定量反演
Keywords:
 ; canopy water content;  PROSAIL;  Phyllostachys edulis;  Sentinel-2B;  quantitative inversion
分类号:
S771.8
DOI:
10.3969/j.issn.1001-7461.2023.04.28
文献标志码:
A
摘要:
 冠层含水量（canopy water content,CWC）的定量反演有助于毛竹林干旱胁迫状况的监测，对其生产管理具有重要意义。以永安天宝岩的毛竹林为研究对象，采用PROSAIL模型，通过全局敏感性分析结合实地调查和相关文献确定模型的参数设置，然后建立含水量与冠层反射率的查找表（LUT），进而利用查找表联合反演等效水厚度（EWT）与叶面积指数（LAI）得到冠层含水量（CWC），最后基于Sentinel-2B影像实现区域冠层含水量的空间量化。结果表明，1）EWT主要影响1 100 nm以后的冠层反射率，对可见光区域冠层反射率几乎无影响；2）基于PROSAIL模型可有效反演毛竹林冠层含水量，其R2=0.536，RMSE为0.059 kg/m2；3）研究区域毛竹林7月的冠层含水量主要分布于0.12~0.41 kg/m2。研究为冠层含水量反演提供一种有效的反演方法，有助于毛竹林的野火预防和病虫害防治。
Abstract:
 The quantitative inversion of canopy water content (CWC) is useful for monitoring the drought stress condition of Phyllostachys edulis forest and is important for its production management.This study used the PROSAIL model to determine the parameters of the model through global sensitivity analysis combined with field surveys and retrieving related literatures.Finally,the spatial quantification of regional canopy water content was achieved based on Sentinel-2B images.The results showed that 1) the equivalent water thickness mainly affected the canopy reflectance over 1100 nm,and had almost no effect on the canopy reflectance in the visible region.2) The canopy water content of P.edulis forest could be effectively inverted based on the PROSAIL model,with R2 of 0.536 and RMSE of 0.059 kg/m2.3) The canopy water content of P.edulis forests in the study area in July was mainly distributed in the range of 0.12-0.41 kg/m2.The study provides an effective inversion method for canopy water content inversion,which is helpful for wildfire prevention and pest control in P.edulis forests.

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备注/Memo

备注/Memo:
 收稿日期：2022-05-11 修回日期：2022-06-07
基金项目：国家青年科学基金（41901387）；福建省教育厅省中青年教师教育科研项目（JT180132）；福建省资源环境监测与可持续经营利用重点实验室开放基金（ZD202104、B15011708）; 资源环境监测与可持续经营福建省高校创新团队发展计划（KC190002）。
第一作者：张仓皓。研究方向：资源与环境遥感监测。E-mail:2974275670@qq.com
*通信作者：王帆，讲师，硕士生导师。研究方向：资源监测和3S技术应用。E-mail:pipi870408@163.com
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