Results 21 to 30 of about 4,102 (160)
Protecting biodiversity and economic returns in resource‐rich tropical forests
Abstract In pursuit of socioeconomic development, many countries are expanding oil and mineral extraction into tropical forests. These activities seed access to remote, biologically rich areas, thereby endangering global biodiversity. We examined how protection of biodiversity and economic revenues can be balanced in biologically valuable regions ...
James G. C. Ball +3 more
wiley +1 more source
Prospects and perils in the geospatial turn of conservation. [PDF]
Abstract Conservation has embraced advances in big data and related digital technologies as key to preventing biodiversity loss, especially in the identification of areas of conservation priority based on spatial data, which we call the big geospatial data turn.
Sze JS, Sauls LA.
europepmc +2 more sources
平流层臭氧浓度对于地球气候变化和生态环境有着重要影响. 具有谱分析能力的高光谱毫米波辐射计是一种用来探测大气痕量气体的被动式微波遥感器, 能够有效探测大气臭氧垂直廓线, 在空间地球科学领域中具有十分重要的应用价值. 本文研制了一种探测平流层大气臭氧吸收谱线的新型高光谱毫米波臭氧辐射计系统, 该系统结构包括射频接收机和数字后端谱分析仪.
班 磊, 何 杰颖, 张 升伟
doaj +1 more source
Matching method based on Harris operator and wavelet pyramid(点特征和小波金字塔技术的遥感图像快速匹配技术)
提出了一种基于Harris特征点提取和小波金字塔的遥感图像快速匹配技术.在对多分辨率遥感图像进行完预处理的基础上,先利用Harris算子提取待匹配图像的特征点,然后利用小波金字塔完成匹配.通过杭州地区TM和SPOT遥感影像的配准实验,表明该算法减少了人工干预,提高了运算速度,又保持了匹配精度.
ZHANGDeng-rong(张登荣) +2 more
doaj +1 more source
Current status and developing recommendations of tailings dam failure [PDF]
This is the final version of the article. Available from Hindawi Publishing Corporation via the DOI in this record.Tailings dam failure accidents with limited emergency response time and huge potential threats, can often lead to heavy casualties and ...
Bu, L +4 more
core +1 more source
海洋水色遥感技术是观测海洋水色状况的高效工具,数十年来持续提供了全球海洋光学特性、水色和生物地球化学参数的重要数据。随着人工智能的快速发展,基于机器学习模型的水色遥感研究逐渐成为科研领域的新热点。本文回顾了海洋水色遥感中机器学习模型的现状与挑战,并评估了这些模型在大气校正、水色反演、碳循环及数据重构中的应用效果。本文重点综述了机器学习在海洋水色遥感应用中的进展。鉴于卫星传感器长期在轨运行中,可能遭受元器件老化等问题,本文强调了对遥感器进行持续定标和真实性检验的必要性 ...
陈 鹏 +6 more
doaj +1 more source
Remote Sensing Retrieval Algorithms and Spatial-temporal Characteristics of POC in the South China Sea [PDF]
颗粒有机碳(ParticulateOrganicCarbon,POC)是海洋生物地球化学过程的重要组成部分,随着光学技术和遥感手段的进步,在不同时空尺度下监测POC取得很大突破。本文以2011年国家自然科学基金委南海共享航次现场光学数据为基础,探索适用于南海POC反演的海色卫星遥感算法,将算法应用到卫SeaWifs遥感反射比Rrs(λ)数据,得到南海月平均POC,并分析其在季节和年际时间尺度上的时空变化特征。 首先,依据现场观测遥感反射比Rrs(λ)和POC,用多种方法来估算南海表层POC浓度 ...
张鹏
core
Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop +8 more
wiley +1 more source
云存储是解决动态增长的海量遥感数据产品存储管理难题的有效手段.针对云存储在遥感数据存储领域中存在的问题,提出了一种基于影像块组织的遥感数据分布式Key-Value存储模型,解决了分布式文件系统存储大规模影像块效率低下的问题,使遥感数据云存储具备了空间区域访问特性;结合开源分布式文件系统HDFS,实现了影像数据的分布式高效存储与空间区域检索.实验与分析表明,系统在多用户并发连接情况下可以维持较高的吞吐率,同时具备良好的可伸缩性和稳定性.
CHIZiwen(池子文) +3 more
doaj +1 more source
近25 a 银川市城市化进程中热力景观格局演变分析 [PDF]
: Based on the Landsat images and statistical data,in this paper the urbanization process and thermal landscape dynamics of Yinchuan City were analyzed. The objectives of this study were as follows: ① To analyze the spatial and dynamic characteristics of
吕荣芳, 张建明, 王浩, 王鹏龙
core

