Results 1 to 10 of about 17,415 (111)

Research on the estimation method of crop net primary productivity based on improved CASA model [PDF]

open access: yesFrontiers in Plant Science
Net Primary Productivity (NPP) is a vital indicator for evaluating the carbon source and sink capacities of ecosystems, significantly influencing assessments of agricultural productivity and carbon cycle studies.
Wanning Li   +7 more
doaj   +4 more sources

Evaluating the CASA model for estimating carbon sequestration in sea buckthorn plantations using multi-temporal remote sensing and field data [PDF]

open access: yesForestry Research
Sea buckthorn (Hippophae rhamnoides L.)-based ecological engineering is critical for ecological restoration and carbon sequestration enhancement in China's Pisha sandstone region.
Maoyuan Wang   +5 more
doaj   +2 more sources

Estimation of Carbon Sequestration Capacity of Cultivated Land Based on Improved CASA-CGC Model—A Case Study of Anhui Province

open access: yesAgriculture
Quantifying carbon sequestration in cultivated land ecosystems is essential for achieving carbon neutrality and ensuring food security, yet current models often fail to capture the complex interactions between crop phenology and environmental factors at ...
Lina Zhang   +5 more
doaj   +3 more sources

An Improved CASA Model for Estimating Winter Wheat Yield from Remote Sensing Images

open access: yesRemote Sensing, 2019
The accurate and timely monitoring and evaluation of the regional grain crop yield is more significant for formulating import and export plans of agricultural products, regulating grain markets and adjusting the planting structure.
Yulong Wang   +6 more
doaj   +3 more sources

An Artificial Intelligence‐Based Computer Vision Model for Human Sperm Concentration, Motility, and Kinematics Analysis [PDF]

open access: yesSmart Medicine
Accurate assessment of sperm concentration and motility is critical for the diagnosis and management of male infertility. However, current methods, manual hemocytometer counting and commercial computer‐aided sperm analysis (CASA) systems, are limited by ...
Sahar Shahali   +8 more
doaj   +2 more sources

Improved CASA model based on satellite remote sensing data: simulating net primary productivity of Qinghai Lake basin alpine grassland [PDF]

open access: yesGeoscientific Model Development, 2022
The Carnegie–Ames–Stanford Approach (CASA) model is widely used to estimate vegetation net primary productivity (NPP) at regional scales. However, the CASA is still driven by multisource data, e.g.
C. Wu   +13 more
doaj   +1 more source

Long Time Series Spatiotemporal Variations in NPP Based on the CASA Model in the Eco-Urban Agglomeration Around Poyang Lake, China

open access: yesRemote Sensing
The ecological urban agglomeration around Poyang Lake represents a critical development area in the Yangtze River basin. The spatiotemporal characteristics of the net primary productivity (NPP) of vegetation are explored from the perspective of the city ...
Tianmeng Du   +5 more
doaj   +3 more sources

Evaluation of NPP using three models compared with MODIS-NPP data over China.

open access: yesPLoS ONE, 2021
Estimating net primary productivity (NPP) is significant in global climate change research and carbon cycle. However, there are many uncertainties in different NPP modeling results and the process of NPP is challenging to model on the absence of data. In
Jinke Sun, Ying Yue, Haipeng Niu
doaj   +2 more sources

An improved Carnegie-Ames-Stanford Approach model for estimating ecological carbon sequestration in mountain vegetation

open access: yesFrontiers in Ecology and Evolution, 2022
The vegetation in mountainous areas is abundant, and its ecological carbon sequestration ability is of great significance to maintain the sustainable and healthy development of the ecological environment. However, when estimating the carbon sequestration
Xu Huang   +9 more
doaj   +1 more source

Projection of Net Primary Productivity under Global Warming Scenarios of 1.5 °C and 2.0 °C in Northern China Sandy Areas

open access: yesAtmosphere, 2020
Empirical evidence suggests that variations in climate affect the net primary productivity (NPP) across sandy areas over time. However, little is known about the relative impacts of climate change on NPP with global warming of 1.5 and 2.0 °C (GW_1.5
Xiaofei Ma   +4 more
doaj   +1 more source

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