搜索结果: 121-135 共查到“知识库 森林经理学”相关记录472条 . 查询时间(3.668 秒)
Modelling of the reef benthic habitat distribution within the Cabrera National Park (Western Mediterranean Sea)
GIS bathymetry habitats mapping Mediterranean
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2023/11/30
Habitat spatial distribution is essential to know where to focus the protection of the seafloor resources. In this work, the bathymetry and backscatter seabed data show the importance of remote sensin...
Wildfire Risk Assessment in Liangshan Prefecture, China Based on An Integration Machine Learning Algorithm
frequency ratio MCD64A1 Bayesian optimization support vector machine random forest extreme gradient boosting
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2023/11/30
Previous wildfire risk assessments have problems such as subjectivity of weight allocation and the linearization of statistical models, resulting in generally low robustness and low generalization abi...
Carbon Pool in Mexican Wetland Soils: Importance of the Environmental Service
wetlands environmental services carbon soil sequestration carbon budgets
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2023/11/29
Mexican wetlands are not included in Earth system models around the world, despite being an important carbon store in the wetland soils in the tropics. In this review, five different types of wetlands...
Improving Estimates and Change Detection of Forest Above-Ground Biomass Using Statistical Methods
above-ground biomass remote sensing statistics modelling spatial modelling machine learning
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2023/11/29
Forests store approximately as much carbon as is in the atmosphere, with potential to take in or release carbon rapidly based on growth, climate change and human disturbance. Above-ground biomass (AGB...
A Hybrid Classification of Imbalanced Hyperspectral Images Using ADASYN and Enhanced Deep Subsampled Multi-Grained Cascaded Forest
hyperspectral image imbalanced data oversampling adaptive synthetic sampling tree-based classifier subsampling deep multi-grained cascade forest
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2023/11/29
Hyperspectral image (HSI) analysis generally suffers from issues such as high dimensionality, imbalanced sample sets for different classes, and the choice of classifiers for artificially balanced data...
Evaluation and Calibration of Remotely Sensed High Winds from the HY-2B/C/D Scatterometer in Tropical Cyclones
HY-2 scatterometer ocean surface winds tropical cyclones machine learning
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2023/11/29
Haiyang-2 scatterometers (HY-2A/B/C/D) have limitations in high wind speed retrieval due to the complexity of the remote sensing mechanism and the influence of rainfall on the radar cross section unde...
兼顾碳储量的长白落叶松人工林多目标优化经营技术规程
成都农业科技职业学院风景园林学院专业：林业技术
成都农业科技职业学院 风景园林学院 林业技术
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2023/11/28
育人为本、德育为先，林业技术专业将德育教育贯穿人才培养全过程，为我国林业生态行业培养“德技双修”的林业技能人才。以岗位人才需求为导向，紧密结合林业行业发展现状和趋势，建立“知行合一、工学结合、产学同步、教学做一体化”的人才培养模式，构建基于林业工作过程的项目课程体系，引入先进教学理念，实施项目教学，教学内容与岗位职能对接，教学项目与生产任务对接，教学环节与工作过程对接。通过校企合作、产学结合、岗位...
【目的】为了寻找受区域影响较小、精度较高且鲁棒性较好的郁闭度遥感估算模型,采用4-Scale几何光学模型估算人工林树冠孔隙率及郁闭度。【方法】选择内蒙古旺业甸林场和广西高峰林场为实验区,首先对4-Scale模型进行参数敏感性分析,模拟林分在不同敏感性参数下的树冠孔隙率P_(vg_c)(树冠为刚体时的冠间孔隙率)和P_(vg)(考虑树冠内部孔隙的孔隙率),建立P_(vg_c)、P_(vg)与敏感性参...
以鄂西南鹤峰县鹅掌楸天然林为研究对象,通过对林分空间结构(角尺度、大小比、混交度)和林分非空间结构(径级结构、树高结构、重要值)的研究与分析,直观地反映其林分结构的特征,查清该区鹅掌楸种群的发展现状,为鹅掌楸天然林的合理保护与科学经营提供依据。在鹅掌楸天然林集中生长的代表性地段建立17个20 m×20 m调查样地,进行每木定位与检尺调查,应用Excel 2019、Winkelmass 2.0软件对...
在东北三省调查水曲柳临时样地198块,收集234株优势木数据和19株解析木数据,通过对查数年龄木芯的严格筛查,剔除了被压木,确定用于编表的数据845组。用9个函数式对水曲柳的年龄与优势木高、胸径与优势木高分别进行模拟,通过相关系数和剩余标准差的比较,选择了理查德函数式作为导向曲线模型。地位指数级14~30 m,级距2 m,用相对树高法展开曲线簇。经过相关系数检验、X^(2)检验和落点检验,地位指数...
Intelligent Sensing and Computing in Wireless Sensor Networks for Multiple Target Tracking
Intelligent Sensing Computing Wireless Sensor Networks Multiple Target Tracking
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2023/11/20
With sixth generation (6G) communication technologies, target sensing can be finished in milliseconds. The mobile tracking-oriented Internet of Things (MTT-IoT) as a kind of emerging application netwo...
Bringing "Climate-Smart Forestry" Down to the Local Level-Identifying Barriers, Pathways and Indicators for Its Implementation in Practice
sustainable forest management climate change mitigation adaptation nature’s contributions to people
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2023/11/20
The theoretical concept of "climate-smart?forestry" aims to integrate climate change mitigation and adaptation to maintain and enhance forests' contributions to people and global agendas. We carried o...
Climate Smart Forestry in the Southern United States
climate change mitigation climate change adaptation monoculture ecosystem services carbon cycle
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2023/11/20
In the United States, Climate?Smart?Forestry?(CSF) has quickly become a popular topic within the academic, political, and industry realms, without substantial delineation of what exactly CSF is. In th...
Trade-Offs for Climate-Smart Forestry in Europe Under Uncertain Future Climate
forest management climate change mitigation substitution effects climate-smart forestry ecosystem services robust optimization
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2023/11/20
Forests mitigate climate change by storing carbon and reducing emissions via substitution effects of wood products. Additionally, they provide many other important ecosystem services (ESs), but are vu...