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author:

Xu, Zhanghua (Xu, Zhanghua.) [1] (Scholars:许章华) | He, Anqi (He, Anqi.) [2] | Zhang, Yiwei (Zhang, Yiwei.) [3] | Hao, Zhenbang (Hao, Zhenbang.) [4] | Li, Yifan (Li, Yifan.) [5] | Xiang, Songyang (Xiang, Songyang.) [6] | Li, Bin (Li, Bin.) [7] | Chen, Lingyan (Chen, Lingyan.) [8] | Yu, Hui (Yu, Hui.) [9] | Shen, Wanling (Shen, Wanling.) [10] | Huang, Xuying (Huang, Xuying.) [11] | Guo, Xiaoyu (Guo, Xiaoyu.) [12] | Li, Zenglu (Li, Zenglu.) [13]

Indexed by:

Scopus SCIE CSCD

Abstract:

Biochemical components of Moso bamboo (Phyllostachys pubescens) are critical to physiological and ecological processes and play an important role in the material and energy cycles of the ecosystem. The coupled PROSPECT with SAIL (PROSAIL) radiative transfer model is widely used for vegetation biochemical component content inversion. However, the presence of leaf-eating pests, such as Pantana phyllostachysae Chao (PPC), weakens the performance of the model for estimating biochemical components of Moso bamboo and thus must be considered. Therefore, this study considered pest-induced stress signals associated with Sentinel-2A/B images and field data and established multiple sets of biochemical canopy reflectance look-up tables (LUTs) based on the PROSAIL framework by setting different parameter ranges according to infestation levels. Quantitative inversions of leaf area index (LAI), leaf chlorophyll content (LCC), and leaf equivalent water thickness (LEWT) were derived. The scale conversions from LCC to canopy chlorophyll content (CCC) and LEWT to canopy equivalent water thickness (CEWT) were calculated. The results showed that LAI, CCC, and CEWT were inversely related with PPC-induced stress. When applying multiple LUTs, the p-values were <0.01; the R2 values for LAI, CCC, and CEWT were 0.71, 0.68, and 0.65 with root mean square error (RMSE) (normalized RMSE, NRMSE) values of 0.38 (0.16), 17.56 mu g center dot cm-2 (0.20), and 0.02 cm (0.51), respectively. Compared to the values obtained for the traditional PROSAIL model, for October, R2 values increased by 0.05 and 0.10 and NRMSE decreased by 0.09 and 0.02 for CCC and CEWT, respectively and RMSE decreased by 0.35 mu g center dot cm-2 for CCC. The feasibility of the inverse strategy for integrating pest-induced stress factors into the PROSAIL model, while establishing multiple LUTs under different pest -induced damage levels, was successfully demonstrated and can potentially enhance future vegetation parameter inversion and monitoring of bamboo forest health and ecosystems.

Keyword:

B images Chlorophyll content Equivalent water thickness Moso bamboo Multiple LUTs Pantana phyllostachysae Chao PROSAIL model Sentinel-2A

Community:

  • [ 1 ] [Xu, Zhanghua]Fuzhou Univ, Acad Geog & Ecol Environm, Coll Environm & Safety Engn, Fuzhou 350108, Peoples R China
  • [ 2 ] [He, Anqi]Fuzhou Univ, Acad Geog & Ecol Environm, Coll Environm & Safety Engn, Fuzhou 350108, Peoples R China
  • [ 3 ] [Zhang, Yiwei]Fuzhou Univ, Acad Geog & Ecol Environm, Coll Environm & Safety Engn, Fuzhou 350108, Peoples R China
  • [ 4 ] [Li, Yifan]Fuzhou Univ, Acad Geog & Ecol Environm, Coll Environm & Safety Engn, Fuzhou 350108, Peoples R China
  • [ 5 ] [Li, Bin]Fuzhou Univ, Acad Geog & Ecol Environm, Coll Environm & Safety Engn, Fuzhou 350108, Peoples R China
  • [ 6 ] [Shen, Wanling]Fuzhou Univ, Acad Geog & Ecol Environm, Coll Environm & Safety Engn, Fuzhou 350108, Peoples R China
  • [ 7 ] [Huang, Xuying]Fuzhou Univ, Acad Geog & Ecol Environm, Coll Environm & Safety Engn, Fuzhou 350108, Peoples R China
  • [ 8 ] [Xu, Zhanghua]Fujian Prov Key Lab Resources & Environm Monitorin, Sanming 365004, Peoples R China
  • [ 9 ] [Hao, Zhenbang]Fujian Prov Key Lab Resources & Environm Monitorin, Sanming 365004, Peoples R China
  • [ 10 ] [Guo, Xiaoyu]Fujian Prov Key Lab Resources & Environm Monitorin, Sanming 365004, Peoples R China
  • [ 11 ] [Li, Zenglu]Fujian Prov Key Lab Resources & Environm Monitorin, Sanming 365004, Peoples R China
  • [ 12 ] [Xu, Zhanghua]Fuzhou Univ, Acad Digital China, Key Lab Spatial Data Min & Informat Sharing, Minist Educ, Fuzhou 350108, Peoples R China
  • [ 13 ] [Xiang, Songyang]Fuzhou Univ, Acad Digital China, Key Lab Spatial Data Min & Informat Sharing, Minist Educ, Fuzhou 350108, Peoples R China
  • [ 14 ] [Chen, Lingyan]Fuzhou Univ, Acad Digital China, Key Lab Spatial Data Min & Informat Sharing, Minist Educ, Fuzhou 350108, Peoples R China
  • [ 15 ] [Yu, Hui]Fuzhou Univ, Acad Digital China, Key Lab Spatial Data Min & Informat Sharing, Minist Educ, Fuzhou 350108, Peoples R China
  • [ 16 ] [Hao, Zhenbang]Fujian Agr & Forestry Univ, Coll Forestry, Fuzhou 350002, Peoples R China
  • [ 17 ] [Huang, Xuying]Nanjing Univ, Int Inst Earth Syst Sci, Nanjing 210023, Peoples R China

Reprint 's Address:

  • 许章华

    [Xu, Zhanghua]Fuzhou Univ, Acad Geog & Ecol Environm, Coll Environm & Safety Engn, Fuzhou 350108, Peoples R China

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Source :

FOREST ECOSYSTEMS

ISSN: 2095-6355

CN: 10-1166/S

Year: 2023

Volume: 10

3 . 8

JCR@2023

3 . 8 0 0

JCR@2023

ESI Discipline: PLANT & ANIMAL SCIENCE;

ESI HC Threshold:18

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 4

SCOPUS Cited Count: 4

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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