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Jia Sun

Researcher at China University of Geosciences (Wuhan)

Publications -  61
Citations -  1022

Jia Sun is an academic researcher from China University of Geosciences (Wuhan). The author has contributed to research in topics: Lidar & Multispectral image. The author has an hindex of 14, co-authored 54 publications receiving 562 citations. Previous affiliations of Jia Sun include Wuhan University.

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Identifying the impacts of natural and human factors on ecosystem service in the Yangtze and Yellow River Basins

TL;DR: In this article, the authors focused on clarifying the major factors influencing the ecosystem services (ESs) in different regions of China, which will be key to manage ecosystems sustainably.
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Estimation of rice leaf nitrogen contents based on hyperspectral LIDAR

TL;DR: A novel technique, i.e., hyperspectral LIDAR (HL) which worked based on wide spectrum emission and a 32-channel detector was introduced, and its potential in vegetation detection was evaluated, and it was shown that the reflectance intensity of the selected characteristic wavelengths of HL system has high correlation with different nitrogen contents levels of rice.
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Evaluation of hyperspectral LiDAR for monitoring rice leaf nitrogen by comparison with multispectral LiDAR and passive spectrometer

TL;DR: It is demonstrated that HSL provided the best indicator for predicting rice LNC, yielding a coefficient of determination (R2) of 0.74 and a root mean square error of 2.80 mg/g with a support vector machine, similar to the performance of ASD.
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Wavelength selection of the multispectral lidar system for estimating leaf chlorophyll and water contents through the PROSPECT model

TL;DR: In this paper, a five-wavelength combination was established to estimate leaf chlorophyll and water contents: 680, 716, 1104, 1882 and 1920nm, and the consistency of the selected wavelengths selected were tested by running different versions of the PROSPECT model.
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Estimating Rice Leaf Nitrogen Concentration: Influence of Regression Algorithms Based on Passive and Active Leaf Reflectance

TL;DR: BPNN provided generally satisfactory performance in estimating rice LNC using the three kinds of passive and active reflectance spectra, and support vector regression of different types/kernels/parameter values.