|Table of Contents|

Spectral Inversion of the Water Content of Hazelnut Leaves at Various Phenological Periods of Fruit Development

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年09
Page:
20-26
Research Field:
Publishing date:

Info

Title:
Spectral Inversion of the Water Content of Hazelnut Leaves at Various Phenological Periods of Fruit Development
Author(s):
HU Zhenzhu; PAN Cunde; ZHAO Shanchao
(College of Forestry and Horticulture，Xinjiang Agricultural University/Key Laboratory of Forestry Ecology and Industry Technology in Arid Region，Education Department of Xinjiang,Urumqi，Xinjiang 830052)
Keywords:
Corylus heterophylla×Corylus avellanay; leaf; water content; spectral reflectance; spectral inversion
PACS:
-
DOI:
10.11937/bfyy.20183085
Abstract:
The ‘Pingou’ hybrids was used as the research object，the spectral characteristics of hazelnut leaves under different water gradients were analyzed，and the effective spectral characteristic parameters of hazelnut leaf water content were selected by using Person-correlation analysis.Accuracy analysis of the model with high fit degree was carried out to determine the suitable water content spectral inversion model for hazelnut leaves，a spectral inversion model of hazelnut leaf water content was constructed in order to realize the accurate management of moisture content in hazelnut tree in the field orchard.The results showed that the spectral reflectance of hazelnut leaves decreased with the increase of water content in visible band and increased with the increase of water content in near-infrared band.Fruit setting period，fruit rapid growth period，fruit fat change period and fruit near-mature period，leaf water content and water index WI，normalized difference water index NDVI，the ratio index WI/NDVI，water band index WBI，central wavelength water index Ratio975，optical/physiological reflectance index PRI all achieved very significant correlation.The three function models of tree water content at different phenological periods of fruit development were constructed with the most relevant effective spectral characteristic parameters WI/NDVI，WI/NDVI，WI and WBI.The results showed that it was feasible to use spectral inversion model to monitor the water content of hazelnut trees.

References:

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Last Update: 2019-06-03