Satellite-based Estimates of Canopy Photosynthetic Parameters for an Alpine Meadow in Northern

Ben NIU; Yongtao HE; Xianzhou ZHANG; Peili SHI; Mingyuan DU

doi:10.5814/j.issn.1674-764X.2020.03.002

Journal of Resources and Ecology, Volume. 11, Issue 3, 253(2020)

Satellite-based Estimates of Canopy Photosynthetic Parameters for an Alpine Meadow in Northern

Ben NIU¹, Yongtao HE^1,2, Xianzhou ZHANG^1,2、*, Peili SHI^1,2, and Mingyuan DU³

¹Lhasa Plateau Ecosystem Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China

²College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100190, China

³Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization, Ibaraki 305-8604, Japan

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Figures & Tables(5)

Fig. 1. The 8-day step radiation observations during the years 2009 to 2011. (a) Total radiation and net radiation. (b) Photosynthetically active radiation (PAR) and the absorbed PAR by canopy (APAR).

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Fig. 2. Seasonal patterns of FPAR observations (FPARg) and satellite-based FPAR estimations from 2009 to 2011 (a); and comparison with the FPARg from: 2009 (b); 2010 (c); and 2011 (d). Slope values (Slope) in (b-d) are the linear relationships between FAPRg and satellite-based FPAR estimations, and the dashed lines are the reference lines of 1:1. All linear

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$Satellite-based estimations of the fractions of absorbed PAR by vegetation canopy (FPAR) and the extinction coefficient (kt) in the alpine meadow study area (n = 63)$

Fig. 3. Satellite-based estimations of the fractions of absorbed PAR by vegetation canopy (FPAR) and the extinction coefficient (kt) in the alpine meadow study area (n = 63)

Fig. 4. [in Chinese]

Table 1.
Satellite-based FPAR estimations and comparisons with tower-based FPAR observations during the growing seasons from 2009 to 2011.

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Table 1.
Satellite-based FPAR estimations and comparisons with tower-based FPAR observations during the growing seasons from 2009 to 2011.

Method	Daily average FPAR estimations (n=21)											Mean FPAR(n=63)
	Mean of SD			RMSE				RPE (%)				Mean FPAR(n=63)
	2009	2010	2011	2009	2010	2011	Mean	2009	2010	2011	Mean	Mean (SD)
FPAR_MOD	0.19 (0.08)	0.21 (0.11)	0.20 (0.09)	0.16	0.19	0.16	0.17	43.1	43.0	41.9	42.7	0.20 (0.09) a
FPAR_LAI	0.26 (0.16)	0.30 (0.21)	0.30 (0.20)	0.13	0.20	0.16	0.17	23.4	19.1	15.1	19.2	0.29 (0.19) b
FPAR_NDVI	0.34 (0.05)	0.36 (0.05)	0.36 (0.06)	0.07	0.06	0.03	0.05	-4.2	3.8	-1.3	-0.5	0.36 (0.05) c
FPAR_EVI	0.35 (0.05)	0.36 (0.06)	0.36 (0.05)	0.07	0.06	0.03	0.05	-4.1	4.5	1.2	-0.3	0.35 (0.05) c
FPARg	0.33 (0.08)	0.37 (0.10)	0.35 (0.09)	0	0	0	0	0	0	0	0	0.35 (0.08) c

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Ben NIU, Yongtao HE, Xianzhou ZHANG, Peili SHI, Mingyuan DU. Satellite-based Estimates of Canopy Photosynthetic Parameters for an Alpine Meadow in Northern[J]. Journal of Resources and Ecology, 2020, 11(3): 253

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Paper Information

Received: Mar. 2, 2020

Accepted: Apr. 11, 2020

Published Online: Apr. 23, 2021

The Author Email: Xianzhou ZHANG (zhangxz@igsnrr.ac.cn)

DOI:10.5814/j.issn.1674-764X.2020.03.002

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Table 1. Satellite-based FPAR estimations and comparisons with tower-based FPAR observations during the growing seasons from 2009 to 2011.

Table 1. Satellite-based FPAR estimations and comparisons with tower-based FPAR observations during the growing seasons from 2009 to 2011.

Table 1.
Satellite-based FPAR estimations and comparisons with tower-based FPAR observations during the growing seasons from 2009 to 2011.

Table 1.
Satellite-based FPAR estimations and comparisons with tower-based FPAR observations during the growing seasons from 2009 to 2011.