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基于小波变换的快鸟遥感影像数据融合

同济大学学报（自然科学版） 2004年第10期32卷 1371-1375页

作者：刘春陈能同济大学测量与国土信息工程系上海200092 上海师范大学旅游学院上海200234

在给出小波变换基本模型的基础上 ,探讨了采用小波正交分解与重构来进行遥感信息融合的基本原理 .快鸟影像数据是目前新的高分辨率卫星遥感数据产品 ,在分析该数据特点的基础上 ,考虑采用小波变换应用于快鸟高分辨率卫星影像数据全色和... 详细信息

在给出小波变换基本模型的基础上 ,探讨了采用小波正交分解与重构来进行遥感信息融合的基本原理 .快鸟影像数据是目前新的高分辨率卫星遥感数据产品 ,在分析该数据特点的基础上 ,考虑采用小波变换应用于快鸟高分辨率卫星影像数据全色和多光谱数据的融合 ,并给出了具体的数学模型和实现流程 .作为实际应用 ,又详细给出了小波用于遥感数据融合的中间过程和最后结果 ,并通过分析影像融合的效果 ,提出了有效的成果调整方法。

关键词：遥感影像小波变换融合

The environmental signal of an early Holocene pollen record from the Shiyang River basin lake sediments, NW china

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Chinese science Bulletin 2002年第4期47卷 267-273页

作者： ZHU Yan, CHEN Fahu & Madsen Davidcollege of geography and Environment, Northwest normal university, Lanzhou 730070, china National Key Laboratory of West Environmental System, Lanzhou university, Lanzhou 730000, china Utah Geological Surv college of geography and Environment Northwest Normal University National Key Laboratory of West Environmental System Lanzhou University

Pollen analyses of 85 samples from the San-jiaocheng section well along the margin of a palaeolake at the end of the Shiyang River, NW china, show that Picea and Sabina dominate the pollen assemblage. Together they reach as high as 40%-60%, with the percentage of Picea varying inversely with that of Sabina. Similar results were obtained from another section in the Shiyang River drainage. Using modern ecological habitat relationship analogues, pol-len transport characteristics, and the overall pollen assem-blage, we propose that both Picea and Sabina pollen were transported by the river from the mountains at the upper reaches of the Shiyang River, and that the assemblage is more indicative of changes in upland vegetation than of local conditions near the section. This interpretation is supported by pollen data derived from surface samples, water samples, and riverbed samples. Using a moisture indicator (the Picea to Sabina ratio) and calculated pollen concentrations, we identify a series of

关键词： NW china The environmental signal of an early Holocene pollen record from the Shiyang River basin lake sediments

A Fast Algorithm for Ontology Similarity Measure and Ontology Mapping

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A Fast Algorithm for Ontology Similarity Measure and Ontolog...

Pollution Assessment and Content of Heavy Metals in Latosol in Hainan Island

2011 4th IEEE International Conference on Computer science and Information Technology(ICCSIT 2011)

作者： Xiao Huang 1 2 1 college of Mathematics Physics and Information Engineering Zhejiang normal university Zhejiang Jinhua 321004 P.R. china 2 college of Education Zhejiang normal university Zhejiang Jinhua 321004 P.R. china Wei Gao 3 4 3 Department of Information yunnan normal university kunming 650092 P.R. china 4 Department of Mathematics Soochow university Suzhou 215006 P.R. china Tianwei Xu 3 3 Department of Information yunnan normal university kunming 650092 P.R. china Zhiyang Jia 5 5 tourism and Literature college yunnan university Lijiang 674100 P.R.china

Ontology similarity calculation and ontology mapping are important research topics in information retrieval. By analyzing the fast algorithm for learning large scale preference relations, we propose the fast algorithm for ontology similarity measure and ontology mapping. Via the ranking learning algorithm, the ontology graph is mapped into a line consists of real numbers. The similarity between two concepts then can be measured by comparing the difference between their corresponding real numbers. Experimental results show that the proposed algorithm has high accuracy and efficiency.

关键词： ontology similarity computation ranking error function conjugate gradient H -exact approximation

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Pollution Assessment and Content of Heavy Metals in Latosol ...

2012年环境污染与大众健康学术会议

作者： Wang Junguang, Zhao Zhizhong , Wang peng college of geography and tourism, Hainan normal university, Haikou, 571158, china

In this thesis, a series of samples collected during the survey in latosol in Hainan island are analyzed to reveal the content distribution of heavy metals. And use of Geoaccumulation and N.L. Nemerow to evaluate the pollution of heavy metal in latosol. Through the geological cumulative index we can know, Cr, Zn, Pb elements in pollution-free to light pollution degree phase , Among them Cr element close to light pollution levels;Ni, Cd elements are in light pollution levels;Cu, As elements was in light pollution to heavy pollution stage .Using the latosol background value as evaluation standard, found Cd elements in the study area has reached the level of heavy pollution, Ni element does not cause soil pollution, Cr, Cu, Zn, As, Pb elements reached a level of light pollution in study area;7 kinds of Heavy Metal Pollution Index in the order of Cd＞Pb＞Zn＞Cu＞As＞Cr＞Ni. Using soil environmental quality standards, found most of the heavy metal element reach the national secondary standard, But individual elements in separate areas reach light pollution levels. In some areas the soil is not polluted, however ,some heavy metals reach the warning value , These areas should pay attention to.

关键词： Latosol environmental quality assessment heavy metal Hainan Island

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土壤生态系统可持续性评价研究

西南师范大学学报（自然科学版） 2002年第1期27卷 98-101页

作者：廖和平沈琼邱道持谢德体西南师范大学资源与环境科学学院云南师范大学旅游与地理科学学院西南农业大学资源与环境科学学院重庆400716

土壤生态系统可持续性是指土壤生态系统持久地维持或支持其内在组份、组织结构和功能动态健康及其进化发展的各种能动性的总和 .它是由生态整合性、自维持活力、抵抗力和自组织力所构成的综合能力体系 .土壤生态系统持续性是由系统自身... 详细信息

土壤生态系统可持续性是指土壤生态系统持久地维持或支持其内在组份、组织结构和功能动态健康及其进化发展的各种能动性的总和 .它是由生态整合性、自维持活力、抵抗力和自组织力所构成的综合能力体系 .土壤生态系统持续性是由系统自身的组份、结构和功能动态来体现的 ,因此 ,对系统组份。

关键词：土壤生态系统可持续性评价生态整合性自维持活力抵抗力自组织力

Study on Development Strategy of DIY Farm Based on SWOT Analysis

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Asian Agricultural Research 2011年第8期3卷 8-10,14页

作者： FU Xiu-li, XIA Ming-ying college of geography and Environmental science, Northwest normal university, Lanzhou 730070, china college of geography and Environmental science Northwest Normal University

SWOT analysis method is adopted to analyze current development situations of DIY farms in china from strengths, weaknesses, opportunities and threats. On the basis of analyses, we put forward strategies for sustainable development of DIY farms, including market investigation and research, full utilization of resources, human-based management, diversified and characteristic services, as well as low price and public-oriented development, etc.

关键词： Development strategies SWOT analysis Leisure agric

Development Zones and Evolvement of Urban Spatial Structure: A Case Study on Lanzhou City

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china City Planning Review 2009年第4期18卷 35-41页

作者： ZHANG Zhibin, Professor, college of geography and Environment science, Northwest normal university, Lanzhou, P. R. china. SHI Anlong, Postgraduate Student, college of geography and Environment science, Northwest normal university, Lanzhou, P. R. china SHI Ke

In the 20 years since they first emerged as influential elements in urban china, development zones have become an impor tant factor in promoting the spatial optimization of urban

关键词： Lanzhou District expand Chongqing emerged resident

Physico-chemical Characteristics and Environmental Significance of Snow Deposition on Haxilegen Glacier No.51 in Tian Shan,china

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Journal of Mountain science 2011年第3期8卷 484-494页

作者： DONG Zhiwen LI Zhongqin ZHANG Mingjun WANG Feiteng WU Lihua State Key Laboratory of Cryospheric sciences Cold and Arid Regions Environmental and Engineering Research Institute /Tianshan Glaeiological Station CAS Lanzhou 730000 China college of geography and Environment science Northwest Normal University Lanzhou 730070 China Graduate university of Chinese Academy of sciences Beijing 100049 China

Snow chemistry on the glaciers of alpine regions is a good indicator of atmospheric environmental *** examine snow chemistry in three snowpits at different altitudes on the Haxilegen Glacier No.51,in the Kuitun River source,Tian Shan,china,during July-September 2004 to *** use correlation analysis,factor analysis and sea-salt tracing methods to examine the characteristics and sources of major ions and mineral dust particles in the *** show that mineral dust particles and major ions in the snow pits vary *** the Asian dust period in springtime,the concentration of mineral dust particles and major ions deposited in snow is high,while the concentration is relatively low during the non-dust period of summer and *** may be caused by dust storm activity in central *** order of major ionic concentrations in the snow packs was determined to be Ca2+ > SO42-> NH4+ > NO3-> Cl-> Na+ > Mg2+ > K+.Ca2+ was the dominant cation;SO42- was the dominant *** find,with the exception of NO3-,that the variabilities of ionic concentrations are highly *** show that the glacier region was significantly affected by dust activity and anthropogenic *** major ions,especially Na+,originate from dust sources of central Asia and from the Ocean,transported by the westerly winds.

关键词： Snow chemistry Mineral dust Environmental significance Haxilegen glacier No. 51 Tian Shan

博尔塔拉河、精河流域绿洲土壤异质性及其驱动力研究

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土壤通报 2010年第1期41卷 81-86页

作者：毋兆鹏新疆师范大学地理科学与旅游学院地理系新疆乌鲁木齐830054

博尔塔拉河、精河流域绿洲频繁的人类活动严重影响了当地生态环境和社会经济发展。首先对博尔塔拉河、精河流域绿洲土壤的理化性状进行了分析,内容包括pH、有机质、碱解氮、有效磷、速效钾及水溶性盐分,结果表明土壤肥力整体水平并不高... 详细信息

博尔塔拉河、精河流域绿洲频繁的人类活动严重影响了当地生态环境和社会经济发展。首先对博尔塔拉河、精河流域绿洲土壤的理化性状进行了分析,内容包括pH、有机质、碱解氮、有效磷、速效钾及水溶性盐分,结果表明土壤肥力整体水平并不高,并且较20年前普遍有所下降。之后,用Kriging进行插值,对研究区土壤综合肥力分布的规律进行了研究,结果表明东南方向上土壤的综合肥力较高,西北方向上土壤的综合肥力较低。最后利用灰色方法找寻了导致研究区土壤异质性的驱动因子,年蒸发量与灾害性天气日数是首要的自然驱动力,耕地面积和化肥施用量则是主要人文驱动力,并且以人文因素驱动作用占主导,为该区生态环境恢复和重建提供了参考。

关键词：博尔塔拉河、精河流域绿洲土壤异质性灰色分析驱动力