搜索结果: 151-165 共查到“知识库 森林经理学”相关记录472条 . 查询时间(6.172 秒)
Assessing the validity of mobile device data for estimating visitor demographics and visitation patterns in Yellowstone National Park
Mobile device data Visitor demographics Temporal visitation patterns National park
2023/11/20
Monitoring visitor demographics and temporal visitation patterns can help national park managers understand their visitors and allocate resources more effectively. Traditional approaches, such as visi...
Biodiversity Conservation of National Parks and Nature-Protected Areas in West Africa: The Case of Kainji National Park, Nigeria
carbon storage and sequestration climate change habitat diversity Kainji National Park protected areas air quality
2023/11/20
Due to rising global warming and climate change, biodiversity protection has become a critical ecological concern. Rich biodiversity zones are under threat and are deteriorating, necessitating nationa...
西北地区在我国生态环境建设和生态安全方面占有重要的战略地位，是我国重要的水源地和生态屏障，同时也是我国生态环境脆弱、水土流失严重、自然灾害多发的地区。近年来随着国家天然林保护和退耕还林工程等重大生态工程的逐步实施，西北地区的森林得到了休养生息，面积逐年增加，生态环境质量得到显著改善。然而，长期以来，由于忽视了对森林资源的培育和适度经营，现有森林面临林分密度大、目的树种缺失或萌生世代遗传退化、先锋树...
苏艳军，中国科学院植物研究所研究员。2009年本科毕业于中国地质大学（北京），2012年硕士毕业于中国科学院地理科学与资源研究，2017年于加州大学默塞德分校获博士学位，并入选中国科学院人才计划，进入中国科学院植物研究所植被与环境变化国家重点实验室工作。主要研究方向为利用激光雷达为主的遥感技定量化探讨森林植被结构与空间局，分析人类活动和全球变化对陆地生态系统的影响。目前已在Remote Sensi...
新疆农业科学院土壤肥料与农业节水研究所农业资源环境信息技术团队
新疆农业科学院 多源遥感 信息系统 农业物联网
2023/2/14
农业资源环境信息技术团队,隶属于新疆农业科学院土壤肥料与农业节水研究所，团队围绕星-空-地多源遥感、信息系统、农业物联网、GIS等技术在农业资源高效利用、环境保护等领域，重点开展农业资源利用与区划、耕地质量监测评价与精准管理、作物营养光谱诊断与调控、智慧农田智能水肥调控、资源环境一张图、数字土壤、水肥一体化及化肥减量增效等科学研究和技术服务工作。
SPDE: A Multi-functional Software for Sequence Processing and Data 2 Extraction
SPDE Sequence Processing Data Extraction
2023/6/2
Sequence Processing and Data Extraction (SPDE) has eight modules comprising 100 basic functions ranging from sequence extraction, format conversion to data reorganization and mining, and all of these ...
A Complete Transcriptional Landscape Analysis of Pinus elliottii Engelm. Using Third-Generation Sequencing and Comparative Analysis in the Pinus Phylogeny
Pinus elliottii Transcriptional Landscape Analysis Pinus Phylogeny
2023/6/5
The planting of Pinus elliottii Engelm. has now reached close to three million ha in China. Molecular breeding as part of the improvement program for P. elliottii in southern China has been carried ou...
国家林业和草原局林业遥感与信息技术重点实验室（图）
林业遥感 森林经理学 资源调查 环境监测
2023/2/15
国家林业和草原局林业遥感与信息技术重点实验室依托中国林科院资源信息研究所，1995年获国家林业和草原局批准成立为局级重点实验室，是一个以应用基础科学研究为主，并承担高层次人才培养任务的国家林业局重点开放性实验室。实验室着眼于国内需求和国际前沿，面向林业遥感与森林经理学科的一些关键的、前沿性课题和具有显著经济效益的等项目，从事森林资源调查、资源环境监测及其相关技术和现代化管理科学的研究。其主要研究方...
Vegetation Cover Estimation Using Convolutional Neural Networks
CNN segmentation UAV vegetation cover estimation
2024/2/4
Vegetation is an important parameter in all bio- and ecosystems, and it should be monitored to conserve and restore the environment. This paper presents a design and implementation of a compact system...
中国森林公安保护森林与野生动物资源绩效分析
森林公安 森林与野生动物 资源保护绩效 中国
2021/3/5
根据行为动机，可将目前中国大陆境内侵害森林与野生动物资源的违法行为分为获利型和满足型2类。2类违法行为的选择可能性除了具有共同条件之外还具有各自不同的条件。法治约束可有效弱化或消除2类违法行为的选择可能性，其中公安机关查处侵害森林与野生动物资源的警务绩效尤为明显。自20世纪80年代以来，中国森林公安在森林与野生动物资源保护中发挥了重要作用。针对目前侵害森林与野生动物资源严重违法行为仍未得到有效遏制...
分散固相萃取—气相色谱/串联质谱法测定竹笋中38种持久性有机污染物
竹笋 多环芳烃 多氯联苯 有机氯农药
2023/6/5
建立了同时测定竹笋中9种多环芳烃(PCBs)、16种多氯联苯(PAHs)和13种有机氯农药(OCPs)的分散固相萃取-气相色谱法-串联质谱(DSPE-GC-MS/MS)分析方法。竹笋样品经乙腈提取,以无水MgSO_4、弗罗里硅土和十八烷基键合硅胶吸附剂(C18)作为分散固相萃取净化剂净化,经气相色谱-串联质谱测定,外标法定量。结果表明,方法实现了对38种持久性有机化合物的分离和定量,分析物含量在2...
Sensitivity of L-band vegetation optical depth to carbon stocks in tropical forests: a comparison to higher frequencies and optical indices
Vegetation optical depth Carbon density Tropical forests L-band Climate change
2024/2/4
Monitoring vegetation carbon in tropical regions is essential to the global carbon assessment and to evaluate the actions oriented to the reduction of forest degradation. Mainly, satellite optical veg...
Influence of Drone Altitude, Image Overlap, and Optical Sensor Resolution on Multi-View Reconstruction of Forest Images
UAV drone-based remote sensing geometric image resolution multi-view reconstruction reconstruction efficiency reconstruction quality structure from motion precision forestry
2024/2/4
Recent technical advances in drones make them increasingly relevant and important tools for forest measurements. However, information on how to optimally set flight parameters and choose sensor resolu...
Tree Species Classification in a Highly Diverse Subtropical Forest Integrating UAV-Based Photogrammetric Point Cloud and Hyperspectral Data
tree species mapping tropical biodiversity imaging spectroscopy photogrammetry support vector machine
2024/2/4
The use of remote sensing data for tree species classification in tropical forests is still a challenging task, due to their high floristic and spectral diversity. In this sense, novel sensors on boar...
AGB Estimation in a Tropical Mountain Forest (TMF) by Means of RGB and Multispectral Images Using an Unmanned Aerial Vehicle (UAV)
forest AGB UAV RGB data multispectral data
2024/2/4
The present investigation evaluates the accuracy of estimating above-ground biomass (AGB) by means of two different sensors installed onboard an unmanned aerial vehicle (UAV) platform (DJI Inspire I) ...