干旱区生态环境知识资源中心(Arid): Spatio-temporal remote sensing of vertical and seasonal chlorophyll-a:b ratio in Tamarix ramosissima

Arid

DOI	10.1080/01431161.2018.1547452
	Spatio-temporal remote sensing of vertical and seasonal chlorophyll-a:b ratio in Tamarix ramosissima
	Maina, John Nyongesah 1,2,3; Li, Pingheng 2,3; Xu, Lu 2,3; Wang, Quan 2,4
通讯作者	Maina, John Nyongesah
来源期刊	INTERNATIONAL JOURNAL OF REMOTE SENSING
ISSN	0143-1161
EISSN	1366-5901
出版年	2019
卷号	40 期号:9 页码:3504-3517
英文摘要	Remotely sensed spectral reflectance data have provided avenues for large-scale non-destructive estimation of temporal and spatial variations of physiological processes in plants. This study established the potential for tracking (chlorophyll) chl-a:b ratio in Tamarix ramosissima based on -leaf-scale photochemical reflectance index (PRI) at Fukang Station of Desert Ecology in the hinterland of the Junggar Basin, Xinjiang, northwest China. Leaves were sampled on a monthly basis over a 3-year growing period. T. ramosissima tolerance to the fragile arid conditions revealed higher coefficient of determination (R-2 > 0.6) between chl-a:b ratio and N content at each light condition. This implied a higher potential for irradiance acclimation through plasticity in photosynthetic apparatus, and hence an important attribute for colonizing wider desert ecological range. PRI was negatively correlated to chl-a:b ratio regardless of season but was more sensitive to changes in light condition. The modified PRI (PRImod, R-510-R-570 nm) performed better than the original PRI (PRI, R-531-R-570 nm) with R-2 improvement in all data sets of this species. These results implied that seasonality and leaf age, within canopy resource variation and the individual species must be considered when applying PRImod to estimate chl-a:b ratio. Application of empirical indices avails a non-destructive timely leaf-level, species and site-specific avenue of detecting vegetation status in arid ecosystems. Remote estimation of chl-a:b ratio obtained at leaf scale in this study could be scaled to ecosystem and global scale by effective estimation of spatial distribution and seasonal variation using other pigment-related vegetation index such as the normalized difference vegetation index, or combination of PRI and the water band index.
类型	Article
语种	英语
国家	Kenya ; Peoples R China ; Japan
收录类别	SCI-E
WOS记录号	WOS:000463538000013
WOS关键词	PHOTOCHEMICAL REFLECTANCE INDEX ; LIGHT-USE EFFICIENCY ; RADIATION-USE-EFFICIENCY ; HYPERSPECTRAL INDEXES ; SPECTRAL REFLECTANCE ; GURBANTUNGGUT DESERT ; LEAF ; NITROGEN ; CANOPY ; PLANT
WOS类目	Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Remote Sensing ; Imaging Science & Photographic Technology
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216495
作者单位	1.Jaramogi Oginga Odinga Univ Sci & Technol, Dept Biol Sci, Bondo, Kenya; 2.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi, Peoples R China; 3.Chinese Acad Sci, Grad Univ, State Key Lab Desert & Oasis Ecol, Beijing, Peoples R China; 4.Shizuoka Univ, Fac Agr, Shizuoka, Japan
推荐引用方式 GB/T 7714	Maina, John Nyongesah,Li, Pingheng,Xu, Lu,et al. Spatio-temporal remote sensing of vertical and seasonal chlorophyll-a:b ratio in Tamarix ramosissima[J]. 中国科学院新疆生态与地理研究所,2019,40(9):3504-3517.
APA	Maina, John Nyongesah,Li, Pingheng,Xu, Lu,&Wang, Quan.(2019).Spatio-temporal remote sensing of vertical and seasonal chlorophyll-a:b ratio in Tamarix ramosissima.INTERNATIONAL JOURNAL OF REMOTE SENSING,40(9),3504-3517.
MLA	Maina, John Nyongesah,et al."Spatio-temporal remote sensing of vertical and seasonal chlorophyll-a:b ratio in Tamarix ramosissima".INTERNATIONAL JOURNAL OF REMOTE SENSING 40.9(2019):3504-3517.