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Object-based classification approach for greenhouse mapping using Landsat-8 imagery

International Journal of Agricultural and Biological Engineering 2016年第1期9卷 79-88,I0005页

作者： Wu Chaofan deng jinsong Wang Ke Ma Ligang Amir Reza Shah Tahmassebi Institute of Applied Remote Sensing&Information Technology Zhejiang UniversityHangzhou 310058China

Suburban greenhouses with intensive agricultural productivity have increasingly influenced the daily diet and vegetable supply in Chinese *** their enormous input of fertilizers and pesticides,greenhouses have considerably changed the local soil quality and environmental risk *** ability to obtain timely and accurate information regarding the spatial distribution of greenhouses could make an important contribution to local agricultural management and soil *** paper attempts to present a practical framework for extracting suburban greenhouses,integrating remote sensing data from Landsat-8 and object-oriented *** classification was implemented,and various properties,including texture and neighborhood features in addition to spectral information,were investigated through the popular random forest technique for feature selection prior to SVM classification to improve the mapping *** results demonstrated that object-based classification incorporating non-spectral features yielded a significant improvement compared with the classification results obtained using only the spectral information in traditional per-pixel *** the producer’s and user’s accuracy were higher than 85%for greenhouse *** it remained a challenge to completely distinguish greenhouses from sparse plants,the final greenhouse map indicated that the proposed object-based classification scheme,providing multiple feature selections and multi-scale analysis,yielded worthwhile information when applied to a continuous series of the freely available Landsat-8 imagery data.

关键词： greenhouse mapping Landsat-8 object-based classification feature selection multi-scale

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Eco-environmental vulnerability assessment for large drinking water resource： a case study of Qiandao Lake Area, China

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Frontiers of Earth Science 2015年第3期9卷 578-589页

作者： Qing GU Jun LI jinsong deng Yi LIN LigangMA Chaofan WU Ke WANG Yang HONG Institution of Remote Sensing and Information System Application Zhejiang University Hangzhou 310058 China School of Civil Engineering and Environmental Sciences and School of Meteorology University of Oklahoma OK 73019 USA State Key Laboratory of Hydroscience and Engineering Department of Hydraulic Engineering Tsinghua University Beijing 100084 China

The Qiandao Lake Area （QLA） is of great significance in terms of drinking water supply in East Coast China as well as a nationally renowned tourist attraction. A series of laws and regulations regarding the QLA environment have been enacted and implemented throughout the past decade with the aim of negating the harmful effects associated with expanding urbanization and industrialization. In this research, an assessment framework was developed to analyze the eco-environ- mental vulnerability of the QLA from 1990-2010 by integrating fuzzy analytic hierarchy process （FAHP） and geographical information systems （GIS） in an attempt to gain insights into the status quo of the QLA so as to review and evaluate the effectiveness of the related policies. After processing and analyzing the temporal and spatial variation of eco-environmental vulnerability and major environ- mental issues in the QLA, we found that the state of eco- environmental vulnerability of the QLA was acceptable, though a moderate deterioration was detected during the study period. Furthermore, analysis of the combination of vulnerability and water quality indicated that the water quality showed signs of declination, though the overall status remained satisfactory. It was hence concluded that the collective protection and treatment actions were effective over the study period, whereas immediately stricter measures would be required for protecting the drinking water quality from domestic sewage and industrial wastewater. Finally, the spatial variation of the eco-environmental vulnerability assessment also implied that specifically more targeted measures should be adoptedin respective regions for long-term sustainable develop- ment of the QLA.

关键词： eco-environment vulnerability assessment,drinking water source fuzzy AHP GIS Qiandao Lake Area

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Ecosystem services dynamics response to tremendous reclamation in a coastal island city

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Ecosystem Health and Sustainability 2019年第1期5卷 155-168,I0010页

作者： jinsong deng Yi Lin Mengmeng Zhou Chun Wu Binjie Chen Guoqiang Xiao Jinbo Cai College of Environmental and Resource Sciences Zhejiang UniversityHangzhou Department of Geography University of Hong KongHong KongChina Breeding and processing laboratory Zhejiang Mariculture Research InstituteWenzhouChina

Introduction:Ecosystem services are the benefits delivering from the natural environment to human *** services are regarded as important tools for decision-makers to understand the impacts of land use and land cover(LULC)***:The dynamic of four primary ecosystem service indicators were assessed over 1984–2014 based on InVEST model and their responses to LULC changes have been analyzed by the ecosystem service change index(ESCI)and ecosystem service state index(ESSI).Our results confirmed the significant increment in land reclamation in Zhoushan City and over half of the reclamation area was used for human-induced urbanization and over a quarter for the *** the whole territory,the most significant LULC conversions were observed between agricultural land and *** study period witnessed the degradation of habitat quality and soil sediment,an increment of the water yield and no significant change of carbon *** and Conclusion:Most changes in LULC are significantly related to the dynamics of ecosystem services,which were more impacted in the reclamation area than the rest of the *** study highlights the importance of ecosystem service assessments for sustainable land planning and securing economic development.

关键词： Land change and land cover ecosystem service land reclamation

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Using nonparametric modeling approaches and remote sensing imagery to estimate ecological welfare forest biomass

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Journal of Forestry Research 2018年第1期29卷 151-161页

作者： Chaofan Wu Hongxiang Tao Manyu Zhai Yi Lin Ke Wang jinsong deng Aihua Shen Muye Gan Jun Li Hong Yang College of Environmental and Resource Sciences Zhejiang University Hangzhou 310058 China Zhejiang Forestry Academy Hangzhou 310023 China School of Civil Engineering and Environmental Sciences and School of Meteorology University of Oklahoma Norman OK 73019 USA State Key Laboratory of Hydro Science and Engineering Department of Hydraulic Engineering Tsinghua University Beijing 100084 China

The spatial distribution of forest biomass is closely related with carbon cycle, climate change, forest productivity, and biodiversity. Efficient quantification of biomass provides important information about forest quality and health. With the rising awareness of sustainable development, the ecological benefits of forest biomass attract more attention compared to traditional wood supply function. In this study, two nonparametric modeling approaches, random forest（RF） and support vector machine were adopted to estimate above ground biomass（AGB） using widely used Landsat imagery in the region,especially within the ecological forest of Fuyang District in Zhejiang Province, China. Correlation analysis was accomplished and model parameters were optimized during the modeling process. As a result, the best performance modeling method RF was implemented to produce an AGB estimation map. The predicted map of AGB in the study area showed obvious spatial variability and demonstrated that within the current ecological forest zone, as well as the protected areas, the average of AGB were higher than the ordinary forest. The quantification of AGB was proven to have a close relationship with the local forest policy and management pattern, which indicated that combining remote-sensing imagery and forest biophysical property would provide considerable guidance for making beneficial decisions.

关键词： Above ground biomass Ecological forest Forest management Landsat Random forest

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LUT:A Lunar-based Ultraviolet Telescope

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Science China(Physics,Mechanics & Astronomy) 2011年第3期54卷 558-562页

作者： CAO Li RUAN Ping CAI HongBo deng jinsong HU JingYao JIANG XiaoJun LIU ZhaoHui QIU YuLei WANG Jing WANG Shen YANG JianFeng ZHAO Fei WEI JianYan National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China Xi' an Institute of Optics and Precision Mechanics Chinese Academy of Sciences Xi' an 710119 China

The Lunar-based Ultraviolet Telescope （LUT） is a funded lunar-based ultraviolet telescope dedicated to continuously monitor- ing variable stars for as long as dozens of days and performing low Galactic latitude sky surveys. The slow and smooth spin of the Moon makes its step by step pointing strategy possible. A flat mirror mounted on a gimbal mount is configured to enlarge the sky coverage of the LUT. A Ritehey-Chretien telescope with a Nasmyth focus configuration is adopted to reduce the total length of the system. A UV enhanced back illuminated AIMO CCD 47-20 chip together with the low noise electric design will minimize the instrumental influence on the system. The preliminary proposal for astrometric calibration and photometric cali- bration are also presented.

关键词： ultraviolet space-based ultraviolet telescope photometric instrumentation lunar probe

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爱因斯坦探针卫星的核塌缩超新星激波暴探测

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中国科学：物理学、力学、天文学 2018年第3期48卷 55-62页

作者：邓劲松王祥玉中国科学院国家天文台空间科学与技术重点实验室北京100012 中国科学院大学天文与空间科学学院北京100049 南京大学天文与空间科学学院南京210093

在核塌缩超新星爆发过程中,当辐射主导的爆炸激波传播到前身星表面附近时,高温辐射逃逸形成激波暴,是超新星最早的电磁信号.激波暴热辐射以紫外和软X射线光子为主,持续时间短暂(~10–1000 s),仅有几个疑似观测事例.爱因斯坦探针卫星开... 详细信息

在核塌缩超新星爆发过程中,当辐射主导的爆炸激波传播到前身星表面附近时,高温辐射逃逸形成激波暴,是超新星最早的电磁信号.激波暴热辐射以紫外和软X射线光子为主,持续时间短暂(~10–1000 s),仅有几个疑似观测事例.爱因斯坦探针卫星开展的大视场、高灵敏度的软X射线快速全天巡天,预期每年将获得几十颗II-P型超新星的激波暴光变曲线,对蓝超巨星爆发和Ib/Ic型超新星的激波暴合计也可能有一到数颗的年探测率,有望用于限制前身星类型、爆前物质损失、超新星爆发机制等.

关键词：超新星激波 X射线源 X射线望远镜

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桐乡市乡镇耕地整理对耕地景观格局的影响及其分析

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农业工程学报 2005年第3期21卷 79-82页

作者：邓劲松王珂沈掌泉罗鹏浙江大学农业遥感与信息技术应用研究所杭州310029

以桐乡市4个乡镇为研究对象,结合航空遥感和地理信息技术,在ArcGIS8.3和ERDAS8.6软件的支持下,通过数字矢量化、外业实地调查、地物调绘和核查以及室内补测的程序建立耕地景观图层数据库。在此基础上,运用景观格局指数:景观破碎度、分... 详细信息

以桐乡市4个乡镇为研究对象,结合航空遥感和地理信息技术,在ArcGIS8.3和ERDAS8.6软件的支持下,通过数字矢量化、外业实地调查、地物调绘和核查以及室内补测的程序建立耕地景观图层数据库。在此基础上,运用景观格局指数:景观破碎度、分离度、形状指数和斑块分形维数对耕地整理前后的景观格局特征及其动态变化进行研究和分析。根据计算结果:整理后4个乡镇耕地景观的形状指数和分形维数都呈下降趋势,并且后者趋近于1,表明耕地景观的斑块形状越趋简单并越有规律;景观分离度减小,景观破碎度升高,斑块密度增大,而平均斑块面积却减小,这说明在目前耕地整理的初级阶段,不适当的耕地整理方式和方法使得耕地景观的分割、破碎程度加剧,孤立的嵌块体数量增加,将会影响农田生态系统的稳定性。因此,在开展耕地整理时,必须遵循可持续发展的基本原理,必须注重景观生态环境的保护,使之趋向生态环境保育型土地整理方向发展。

关键词：景观格局耕地整理景观破碎度分离度形状指数分形维数

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论浙西地区在北上抗日先遣队历史上的重要地位

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党史研究与教学 2006年第5期 17-24页

作者：邓金松中共浙江省委党史研究室杭州310000

为了策应中央红军主力长征,1934年7月,由红七军团组建的红军北上抗日先遣队受命从江西瑞金出发,冲破国民党军的前堵后追,牵引了大量“围剿”中央苏区的国民党部队,转战福建、浙江、江西和安徽4省,最后在江西怀玉山失败。长期以来,北上... 详细信息

为了策应中央红军主力长征,1934年7月,由红七军团组建的红军北上抗日先遣队受命从江西瑞金出发,冲破国民党军的前堵后追,牵引了大量“围剿”中央苏区的国民党部队,转战福建、浙江、江西和安徽4省,最后在江西怀玉山失败。长期以来,北上抗日先遣队在浙西地区活动的历史并没有引起足够的重视。本文试图以浙西地区在当时的战略地位作为切入点,从中革军委的部署,北上抗日先遣队“三进三出”浙西的战斗历程,及在浙西地区的最后决策等诸多方面综合分析,阐述浙西地区对于北上抗日先遣队的重要意义。

关键词：浙西地区红军抗日先遣队历史重要地位

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基于原子力显微镜观测的煤中显微组分微观形貌与孔隙结构

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煤炭科学技术 2023年第4期51卷 127-132页

作者：张小梅王绍清陈昊邓金松霍立琦中国矿业大学(北京)地球科学与测绘工程学院北京100083

煤炭既是重要的能源资源,也是潜在的材料原料。作为能源时,煤的物理结构在其综合利用及转化中有不可忽视的作用,如煤中孔隙结构对煤层气的储存、吸附、运移、解吸等有关键性作用。作为材料原料时,能为高精尖产业提供优质原料来源,如煤... 详细信息

煤炭既是重要的能源资源,也是潜在的材料原料。作为能源时,煤的物理结构在其综合利用及转化中有不可忽视的作用,如煤中孔隙结构对煤层气的储存、吸附、运移、解吸等有关键性作用。作为材料原料时,能为高精尖产业提供优质原料来源,如煤基石墨、煤基石墨烯等。显微组分是煤的主要成分,对煤的属性及其应用贡献巨大。以榆横矿区小纪汗煤矿2号煤层样品(XJH)为研究对象,对煤中显微组分开展原子力显微镜(AFM)观测,分析镜质组、半丝质体和丝质体的微观形貌和孔隙结构特征,为该区煤的清洁高效利用夯实基础。结果显示,XJH煤显微组分的微观形貌以粒状结构为主,表面颗粒呈不同规则程度圆形或椭圆形随机分布;镜质组表面颗粒的功率谱密度分形维数Ds最大,颗粒空间充填能力和高低起伏程度大,随机性强,微观结构较复杂。半丝质体次之。丝质体Ds最小,颗粒分布较疏散,起伏程度较缓,微观结构较镜质组和半丝质体简单。孔隙结构方面,镜质组孔隙平均孔径和面积最小,但孔隙数量最多,且贡献主要来自孔径<2 nm的微孔,镜质组孔隙结构更利于煤层气的吸附和储存;惰质组平均孔径和面积大于镜质组,但孔隙数量更少,这是惰质组中孔径2~50 nm的介孔数量较多所致,惰质组的孔隙结构能为煤层气的扩散提供有利通道。惰质组中半丝质体和丝质体的孔隙结构都主要由介孔贡献,但半丝质体孔隙分形维数D较大,即半丝质体孔隙不规则程度较丝质体大。

关键词：煤结构显微组分微观形貌孔隙结构原子力显微镜(AFM)

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指向深度学习的知识结构化水平诊测的探索——以义务教育化学课程“燃烧与灭火”单元为例

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化学教学 2023年第8期 45-48页

作者：杨梓生邓锦松龙岩市教育科学研究院福建龙岩364000

深度学习旨在促进知识结构化,实现知识向素养转化。评价学生知识结构化水平的达成情况,是“素养导向”教学应解决的问题。基于深度学习重视内容逻辑关联、认识思路建构、情感价值体悟、核心观念统整的教学追求,提出知识关联、认识思路... 详细信息

深度学习旨在促进知识结构化,实现知识向素养转化。评价学生知识结构化水平的达成情况,是“素养导向”教学应解决的问题。基于深度学习重视内容逻辑关联、认识思路建构、情感价值体悟、核心观念统整的教学追求,提出知识关联、认识思路、核心观念等结构化水平的诊测构想。以义务教育化学课程“燃烧与灭火”单元为例,对三种结构化的内涵及诊测实施进行了阐述。

关键词：深度学习知识结构化教学评价义务教育化学课程燃烧与灭火

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