Results 21 to 30 of about 11,335 (270)

Real-Time Software for the Efficient Generation of the Clumping Index and Its Application Based on the Google Earth Engine

Remote Sensing, 2022
Canopy clumping index (CI) is a key structural parameter related to vegetation phenology and the absorption of radiation, and it is usually retrieved from remote sensing data based on an empirical relationship with the Normalized Difference between ...
Yu Li, Hongliang Fang
doaj   +2 more sources

Retrieving the Leaf Area Index of Dense and Highly Clumped Moso Bamboo Canopies from Sentinel-2 MSI Data

Remote Sensing
The effects of leaf clumping on leaf area index (LAI, m2·m−2) retrieval have been proved by several studies. For dense and highly clumped Moso bamboo canopies, LAI is usually retrieved using the SAIL-series models that do not account for leaf clumping ...
Weiliang Fan, Jun Wu, Guang Zheng, Qian Zhang, Xiaojun Xu, Huaqiang Du, Mengxiang Zheng, Kexin Zhang, Feng Zhang   +8 more
doaj   +2 more sources

The causal relationship between body mass index and perianal abscess: a Mendelian randomization study [PDF]

BMC Gastroenterology
Background Observational studies suggest an association between elevated body mass index (BMI) and perianal abscess risk, but residual confounding and reverse causality limit causal inference.
Long Wu, Huan Wu, Xiao-Yun Li, Yun-Huan Zhen, Hai-Yang Li   +4 more
doaj   +2 more sources

Validation of the MODIS Clumping Index: A Case Study in Saihanba National Forest Park

Remote Sensing
The clumping index (CI) describes the level of foliage grouping relative to the random distribution within the canopy. It plays a vital role in the derivation of other important parameters (e.g., the leaf area index, (LAI)) that are usually employed in ...
Siyang Yin, Ziti Jiao, Yadong Dong, Lei Cui, Anxin Ding, Feng Qiu, Qian Zhang, Yongguang Zhang, Xiaoning Zhang, Jing Guo, Rui Xie, Yidong Tong, Zidong Zhu, Sijie Li, Chenxia Wang, Jiyou Jiao   +15 more
doaj   +2 more sources

Digital Evaluation of Cigarette Smoke Clumping Based on Aerosol Particle Analysis

IEEE Access
Cigarette smoke clumping, an important indicator of smoke status, draws consumer attention due to its correlation with smoke concentration, thickness, fullness, and the clumping index, which significantly affects the sensory quality of cigarettes. Due to
Lei Jiao, Shishuan Guan, Kezhi Wu, Xiaofei Ji, Cunfeng Yu, Xinlong Zhang, Zengyu Wang, Shuaishuai Sun, Hongtao Li, Liwen Zheng, Jun Li, Guangwei Jiang, Qiang Sun, Erge Lin, Hongwei Zheng   +14 more
doaj   +2 more sources

Analysis of the Directional Characteristics of the Clumping Index (CI) Based on RAMI-V Canopy Scenes

Journal of Remote Sensing
The vegetation canopy clumping index (CI) is an important indicator for understanding radiative transport processes, radiation interception, and the photosynthesis of vegetation canopies.
Jinke Xie, Donghui Xie, Kun Zhou, Guangjian Yan, Xihan Mu   +4 more
doaj   +2 more sources

Photosynthetically Active Radiation and Foliage Clumping Improve Satellite-Based NIRv Estimates of Gross Primary Production

Remote Sensing, 2023
Monitoring gross primary production (GPP) is necessary for quantifying the terrestrial carbon balance. The near-infrared reflectance of vegetation (NIRv) has been proven to be a good predictor of GPP.
Iolanda Filella, Adrià Descals, Manuela Balzarolo, Gaofei Yin, Aleixandre Verger, Hongliang Fang, Josep Peñuelas   +6 more
doaj   +1 more source

Global specific vegetation cover (SVC), base clumping index (BCI), full clumping index (FCI), and leaf projection function (G) derived from clumping index (CI), leaf area index (LAI), and fractional vegetation cover (FVC) remote sensing products

, 2022
The dataset includes global specific vegetation cover (SVC), base clumping index (BCI), full clumping index (FCI), and leaf projection function (G) derived from clumping index (CI), leaf area index (LAI), and fractional vegetation cover (FVC) remote ...
Zhang, Yinghui, Fang, Hongliang, Li, Sijia, Wei, Shanshan, Yao, Wang   +4 more
core   +1 more source

Comparative Evaluation of Algorithms for Leaf Area Index Estimation from Digital Hemispherical Photography through Virtual Forests

Remote Sensing, 2021
The in situ leaf area index (LAI) measurement plays a vital role in calibrating and validating satellite LAI products. Digital hemispherical photography (DHP) is a widely used in situ forest LAI measurement method.
Jing Liu, Longhui Li, Markku Akerblom, Tiejun Wang, Andrew Skidmore, Xi Zhu, Marco Heurich   +6 more
doaj   +1 more source

Clumping in Forest Radiation Regime Models

, 2022
Forest structure is realized in a variety of ways in forest radiation regime models. Depending on model complexity, canopy structure can be quantified by simple parameters such as leaf area index, describing the density of canopies, and an associated ...
Schraik, Daniel
core   +1 more source