搜索结果: 61-75 共查到“知识库 林学”相关记录6838条 . 查询时间(1.288 秒)
Allometric Equations for Volume, Biomass, and Carbon in Commercial Stems Harvested in a Managed Forest in the Southwestern Amazon: A Case Study
managed forests carbon sequestration state Acre Brazil tropical forest rainforest timber
2024/1/19
Forests in the southwestern Amazon are rich, diverse, and dense. The region is of high ecological importance, is crucial for conservation and management of natural resources, and contains substantial ...
Influence of Climate on Carbon Sequestration in Conifers Growing under Contrasting Hydro-Climatic Conditions
carbon accumulation conifers wood density mixed models tree rings dendroecology
2024/1/19
Analyzing the contrasting ecological gradients makes it easier to understand the influence of climate on carbon accumulation. Background and Objectives: The increasing climatic variability has implica...
A Bayesian Approach to Estimating Seemingly Unrelated Regression for Tree Biomass Model Systems
Bayesian approaches seemingly unrelated regression Korean larch Markov chain Monte Carlo Gibbs sampler
2024/1/19
Accurate estimation of tree biomass is required for accounting for and monitoring forest carbon stocking. Allometric biomass equations constructed by classical statistical methods are widely used to p...
Remote sensing for monitoring and mapping Land Productivity in Italy: A rapid assessment methodology
Remote sensing MODIS-NDVI Land Productivity Land Degradation Neutrality
2024/1/19
We present a remote sensing-based methodology for the Land Productivity (LP) rapid assessment and monitoring of status and trends at national and sub-national scales. This methodology aims at supporti...
Monitoring vegetation dynamics in East Rennell Island World Heritage Site using multi-sensor and multi-temporal remote sensing data
East Rennell World Heritage Site (ERWHS) vegetation cover forest cover dynamic monitoring multi-sources remote sensing data
2024/1/19
East Rennell of Solomon Island is the first natural site under customary law to be inscribed on UNESCO's World Heritage List. Potential threats due to logging, mining and agriculture led to the site b...
Operational Monitoring and Damage Assessment of Riverine Flood-2014 in the Lower Chenab Plain, Punjab, Pakistan, Using Remote Sensing and GIS Techniques
floods Landsat-8 remote sensing GIS disaster mapping damage assessment Lower Chenab Plain
2024/1/19
In flood-prone areas, the delineation of the spatial pattern of historical flood extents, damage assessment, and flood durations allow planners to anticipate potential threats from floods and to formu...
The relationships among structure variables of larch forests in China
Larch forests Stand factor Allometric relationship Power function Density effect and self-thinning
2024/1/19
Larch (Larix Mill.) forests are widely distributed in the upper parts of mountainous areas in China, playing vital roles in constructing mountain landscapes and maintaining mountain environments. Desp...
Soil water deficit as a tool to measure water stress and inform silvicultural management in the Cape Forest Regions, South Africa
Soil Water Availability Climatic Gradient Slash Pine Monterey Pine Edaphic Properties
2024/1/19
An understanding of variations in water availability to plantation forests on a spatial and temporal scale is essential when designing risk averse and site-specific silvicultural management regimes. V...
Family Forest Owners’ Perception of Management and Thinning Operations in Young Dense Forests: A Survey from Sweden
harvesting biomass bioenergy attitudes small-scale forestry
2024/1/19
A Mediterranean holm oak forest was subjected to experimental partial rainfall exclusion during 21 consecutive years to study the effects of the expected decrease in water availability for Mediterrane...
Unmanned aerial vehicle based measurement of urban forests
Allometry Lidar Structure from motion Unmanned aerial vehicles
2024/1/19
Urban forests are dynamic and change in response to both human and natural forces. To effectively monitor and manage urban forests, periodic inventories are needed to ensure that information about the...
Evaluation of a UAV-mounted consumer grade camera with different spectral modifications and two handheld spectral sensors for rapeseed growth monitoring: performance and influencing factors
Modified consumer grade camera Unmanned aerial vehicle (UAV) Field-based hyperspectral data GreenSeeker crop sensor Image quality Band combination
2024/1/19
The objective of this study was to evaluate the crop monitoring performance of a consumer-grade camera with non-modified and modified spectral ranges which are commonly used in low-altitude unmanned a...
Rethinking the influence of chloroplast movements on non-photochemical quenching and photoprotection
plant cell chloroplast photoprotective mechanism non-photochemical quenching (NPQ)
2024/1/19
Under blue light, plant chloroplasts relocate to different areas of the cell. The photoreceptor phototropin 2 (phot2) mediates the chloroplast movement mechanism under excess blue light alongside the ...
Analysis of Arabidopsis seedling responses to daytime temperature regimes identifies an mRNA hairpin as a novel thermosensor in plants.
Protocol: low cost fast and efficient generation of molecular tools for small RNA analysis
Vector Target mimic miRNA, Cloning Plant Downregulation
2024/1/19
Small RNAs are sequence-dependent negative regulators of gene expression involved in many relevant plant processes such as development, genome stability, or stress response. Functional characterizatio...
Functional characteristics of a calcium-dependent protein kinase (MaCDPK1) enduring stress tolerance from Morus atropurpurea Roxb.
Calcium-dependent protein kinases Mulberry Salt stress Drought stress ABA
2024/1/19
Calcium-dependent protein kinases (CDPKs), as an important calcium sensor in plants, are widely involved in the signal transmission process of growth and development, pathogen defense response and bio...