搜索结果: 1-15 共查到“知识库 林业遥感”相关记录27条 . 查询时间(2.172 秒)
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Monitoring intra-annual and interannual variability in spatial distribution of plastic-mulched citrus in cloudy and rainy areas using multisource remote sensing data(图)
Monitoring intra-annual interannual variability spatial distribution plastic-mulched citrus
2024/4/1
The technology of canopy plastic mulching has been widely used in citrus orchards for protecting fruit trees from cold damage. Understanding the spatio-temporal dynamics of plastic-mulched citrus (PMC...
【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...
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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。
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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
CONSTRUCTION AND APPLICATION OF ENHANCED REMOTE SENSING ECOLOGICAL INDEX
Enhanced Remote Sensing Ecological Index Ecosystem Ecological Environment Quality
2018/5/15
In order to monitor the change of regional ecological environment quality, this paper use MODIS and DMSP / OLS remote sensing data, from the production capacity, external disturbance changes and human...
FOREST COVER CHANGE ANALYSIS IN INNER MONGOLIA USING REMOTE SENSING DATA
Forest cover change Remote sensing data Inner Mongolia Land use and land cover data
2018/5/16
Forest is the lung of the earth, and it has important effect on maintaining the ecological balance of the whole earth. This study was conducted in Inner Mongolia during the year 1990–2015. Land use an...
Assessment of some forest characteristics employing IKONOS satellite data
texture categorial knowledge vegetation cover
2015/3/6
In recent years, satellite remote sensing has become a new tool for estimation of forest condition. The paper deals with spruce timber growing stock and vegetation cover assessment employing IKONOS sa...
Remote monitoring of forest response to changed soil moisture regime due to river regulation
floodplain forest flood elimination soil moisture regime
2015/1/29
Floodplain forest response to changed soil moisture regime and nutrient availability due to river regulation was studied using remote sensing (ETM) data. Images of May and October 2001 were used to pr...
针对全球环境变化研究,要充分发挥卫星观测数据潜力,特别是针对缺乏长时间序列、高时空分辨率和高质量的全球陆表特征参量产品。尽管我国已经发射了多个对地观测的卫星系列,但还没有生产出自己独特的全球陆表卫星产品。为了支持全球环境变化的研究,国内20多家大学和研究所于2009年承担了“863”重点项目——“全球陆表特征参量产品集生成系统研发与产品生成”,综合利用国内外卫星遥感数据源,开展了一系列研究工作。本...
基于CART决策树与最大似然比法的植被分类方法研究
植被分类 决策树算法 最大似然比法
2013/11/4
结合阿坝若尔盖县大骨节病典型病区植被分布特点,选用不同时相SPOT4及ETM遥感数据,提出了将较易实现的CART决策树算法与最大似然比分类法有机结合在一起进行植被分类的方法。决策树算法能很好地区分植被大类,分类精度达到96%,但是无法确定区分乔木亚类的阈值;最大似然比法整体分类精度不高,仅为84%,但是针对乔木亚类的分类精度能达到94%,将两种算法综合利用,最终总分类精度达到95.05%,Kapp...
遥感在城市绿地调查中的应用
遥感 城市绿地 应用实例
2009/10/26
归纳总结了城市绿地调查中遥感的特点,并列举遥感在城市绿地调查中的应用,在此基础上,具体阐述绿地解译标志的建立,并以湖南省岳阳楼区为例,利用高分辨率卫星遥感数据,完成了对该区的绿地调查。最后总结城市绿地调查中仍存在的问题,并对其研究工作进行展望,以期为制定合理科学的城市规划提供依据,实现良好的社会和经济效益。
Characteristics of Band and Luminance and Classification of the Tree Vigor of Aged, Large-diameter Japanese Red Pine (Pinus densiflora) Using High-resolution IKONOS Satellite Data
IKONOS Japanese red pine remote sensing tree vigor
2009/8/27
The relationships between characteristics of band and luminance and classification of the tree vigor of aged, large-diameter Japanese Red Pine was performed using high-resolution IKONOS satellite data...
森林蓄积量遥感定量估测研究综述
森林蓄积量 遥感技术 多元回归模型
2009/7/15
论述森林蓄积量的概念和发展历史,介绍森林蓄积量定量估测的常规方法,以及近年出现的新蓄积量定量估测方法,如遥感方法、基于遥感技术的神经网络模型方法,并阐述了森林蓄积量遥感定量估测方法的发展趋势。