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PLS path model building:A multivariate approach to land price studies-A case study in Beijing

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Progress in Natural Science:Materials International 2009年第11期19卷 1643-1649页

作者： Wenjie Wu~(a,b),Wenzhong Zhang~(a,*) a Institute of Geographic Sciences and Natural resources Research,cas,Beijing 100101,China b Graduate University of Chinese Academy of Sciences,Beijing 100049,China Institute of Geographic Sciences and Natural resources Research CAS Beijing 100101 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

Previous studies have revealed that statistical methods can be used to analyze land-leasing parcel ***,the conventional statistical methods used in land analysis have some limitations,especially in cases of limited observational *** this paper,with the help of geographic information system(GIS) techniques,a partial least squares(PLS) path model is applied to study the relationship between residential land prices and various determinants through a case study of Beijing in *** a preliminary analysis,four latent variables are selected:accessibility of the workplace center,livability,traffic,and environment *** results show that the observation variables have a strong explanatory power for their corresponding latent variables,and the four latent variables have varying impacts on residential land *** the latent variables,accessibility to the workplace center has the strongest impact on the residential land price.

关键词： Land PLS path model GIS Beijing

Spatial distribution characteristics of urban thermal conditions: application of GIS and remote sensing

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Journal of Geographical Sciences 2001年第3期11卷 261-270页

作者： ZHOU Hong-mei1, ZHOU Cheng-hu2, GE Wei-qiang1, DING Jin-cai3 (1. Shanghai Meteorological Institute, Shanghai 200030, China 2. State Key Laboratory of resources and environment information System, Institute of Geographic Sciences and Natural resources State Key Laboratory of resources and environment information System Institute of Geographic Sciences and Natural Resources Research CAS Shanghai Meteorological Institute Meteorological center

The urban thermal distribution characteristics and its variation are dynamically monitored and synthetically analyzed by using GIS technology. The meteorological satellite data serve as main information source, assisted as auxiliary information sources by the landsat satellite TM data, land use thematic maps and meteorological observed data. A correlated pattern on the ground surface brightness temperatures and air temperatures has been studied and established with good performance of application.

关键词： remote sensing geographic information system urban thermal distribution application and study

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我国石油安全与天然气开发利用问题研究

天然气地球科学 2003年第2期14卷 148-156页

作者：史斗郑军卫中国科学院资源环境科学信息中心甘肃兰州730000

石油安全是能源安全的核心和集中表现。从全球来看 ,2 0世纪末以来特别是“9.1 1事件”以后 ,发达国家不断调整自己的石油安全战略 ,包括实行石油供应的“多源化”、补足和增加石油战略储备量、扩大国内石油储量利用份额、建立新的境外... 详细信息

石油安全是能源安全的核心和集中表现。从全球来看 ,2 0世纪末以来特别是“9.1 1事件”以后 ,发达国家不断调整自己的石油安全战略 ,包括实行石油供应的“多源化”、补足和增加石油战略储备量、扩大国内石油储量利用份额、建立新的境外石油资源基地、推行节油和限油政策等。发达国家的石油安全战略及措施对我国有 5方面启示 :1我国从中东进口石油应注意国际政治、军事、外交和运输等因素的制约 ;2我国应着眼于北方近邻俄罗斯的油气资源并与其建立石油伙伴关系 ;3我国应提升石油资源转换率、储量置换率和石油的供给率 ;4我国应建立国家的石油战略储备体系 ;5我国应进一步节约用油、以气代油。同时 ,还应充分注意发达国家的石油安全战略对我国造成的威胁。较石油而言 ,我国天然气资源开发潜力较大、生命期较长。近年来。中国天然气工业发展迅速、天然气需求总量增长很快、有利于我国开发利用天然气的国际经济环境良好。在代替石油或者部分代替石油。

关键词：石油安全天然气开发中国能源安全石油战略储备量油气资源

PHP+MySQL+Apache组合开发草坪信息与决策支持系统的实践

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计算机工程与应用 2003年第32期39卷 213-215页

作者：方玉东张志国任永功中国科学院地理科学与资源研究所北京100101 山东农业大学资源与环境学院泰安271018 山东农业大学信息中心泰安271018

经检索,中美合作项目TI&DSS是目前国内外Internet上最早的草坪方面的信息与决策支持系统,文中描述和分析了PHP+MySQL+Apache技术的特点,阐述了利用PHP+MySQL+Apache技术实现TI&DSS的过程。

关键词：草坪信息系统 DSS

Modeling Sediment Yields in A Small Gully of the Sichuan Hilly Basin Using Geowepp Model

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Modeling Sediment Yields in A Small Gully of the Sichuan Hil...

2012 National Conference on information Technology and Computer Science

作者： Zheng Jinjun School of resources and environment University of Electronic Science and Technology of China Chengdu,China,611731 Hong Chao School of resources and environment University of Electronic Science and Technology of China Chengdu,China,611731

The spatial pattern of soil erosion and deposition on catchment scale are predicted by the GeoWEPP model in a small catchment of the Sichuan Hilly *** estimated sediment delivery per unit area and sediment delivery ratio are 2760 t km2 yr-1 and 0.485,*** with the results derived by the second soil erosion survey based on remote sensing,the results by the GeoWEPP model are *** to the spatial pattern of sediments simulated by the GeoWEPP,the slight soil erosion rates for the wood land and patter show that the woodland have good soil and water conservation benefit than cultivated *** the same time,the GeoWEPP are useful tool to establish effective policy for comprehensive treatment of small catchment in view of the soil erosion and deposition could be estimated on time-scale and spatial-scale by the GeoWEPP.

关键词： component The GeoWEPP model model simulation soil redistribution the Sichuan Hilly Basin

Exploring the Spatial Distribution of the Peasant Family Garden Based on the GIS in Xindu District,Chengdu City

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Exploring the Spatial Distribution of the Peasant Family Gar...

2012 National Conference on information Technology and Computer Science

Due to the increasing of the population and development of industry economy,many Peasant Family Gardens have been flocking to the Sichuan Basin and shows messy distribution pattern on spatial *** the present paper,total of 187 Peasant Family Gardens in the Xindu District,Chengdu City,are selected as the focus of the *** Spatial Analysis and Geo-statistical Analysis of the ArcGIS software are used to analyze the distribution regularity of the Peasant Family Garden,and then to explore the contributory factors leading to the messy distribution *** results show that the spatial distribution pattern of Peasant Family Garden belongs to *** are five cluster zones of the Peasant Family Garden in Xindu *** spatial distribution of the Peasant Family Gardens is relatively dense with the buffer distance from 2 to 6km.

关键词： component the Peasant Family Garden,Spatial analysis,Geo-statistical analysis,the Xindu District

Construction of Database System for Qinghai-Tibet Plateau and Its Development--Discussing Research environment Based on information Technology

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Construction of Database System for Qinghai-Tibet Plateau an...

作者： Chen Shenbin,Peng Mei,Yue Yanzhen and Shi HuizongCommission for Integrated Survey of Natural resources,cas,Beijing 100101,P. R. China

Qinghai-Tibet Plateau is called“the third pole of the earth”.People living here mainlyare *** region has been widely paid close attention in the *** should have awealth of data for exploring the mysteries of the earth sciences of Qinghai-Tibet Plateau andresearching the way of Plateau sustainable *** scientific surveys and researcheson Qinghai-Tibet Plateau organized by cas or other departments had been carried out since *** addition,some international cooperation surveys and researches on Qinghai-Tibet Plateau werecarried out too in last 20 *** of thousands papers and reports have been *** accumulated a wealth of data and materials related to Qinghai-Tibet *** and technology is forging ahead and bringing about change day after *** studyingproject of the Qinghai-Tibet Plateau environment change and regional sustainable developmentgives us a favorable circumstance for sharing the data and materials of Qinghai-Tibet *** method is to set up Web Site of Qinghai-Tibet Plateau information and *** describes the purpose,conception and progress for the work.

关键词： database system,Qinghai-Tibet Plateau,information technology

Salinization Resistance Transgenic Soybean reduced bacterial diversity in rhizosphere

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Salinization Resistance Transgenic Soybean reduced bacterial...

2010 3rd International Conference on Future BioMedical information Engineering (FBIE 2010)

作者： Zheng WANG Zhi-Hua LIU Hong-Yan WANG resources and environment Sciences College Northeast Agricultural University Harbin Heilongjiang Province China

In order to deeply understand the effect of Salinization Resistance Transgenic Soybean （SRTS） on diversity of rhizospheric bacteria in saline soils in Songnen Plain, Heilongjiang Province, DGGE- cloning and traditional culture-depending methods were used. DGGE fingerprint analysis results indicated that the bacterial diversity index and evenness index in rhizospheric soil of SRTS were lower than other soybean’s based on analysis to the number of bands of bacterial 16SrDNA. DGGE-cloning sequencing results showed that SRTS has a certain inhibition effect on rhizosphere soil bacteria phylum Firmicutes and decreased the priority of phylum Proteobacteria, yet had no effect on rhizosphere soil bacteria phylum Acidobacteria. The study revealed that the release of SRTS in saline soil decreased the amount and the diversity of bacteria in rhizospheric soil to some extent, and phylum Alphaproteobacteria genus Sphingomonas was promoted in rhizospheric soil.

关键词： Salinization Resistance Transgenic Soybean saline soils rhizospheric soil bacterial diversity PCR-DGGE

天然气中氮的来源及塔里木盆地东部天然气中氮地球化学特征

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天然气地球科学 2003年第3期14卷 172-176页

作者：陈践发朱岳年石油大学(北京) 中国科学院资源环境科学信息中心甘肃兰州730000

氮气 ( N2 )是天然气中最常见的非烃组分之一。天然气中的 N2 依其成因与来源特征总体可分为大气来源、源岩有机质的生物降解或热分解成因、沉积岩含氮矿物的高温热解成因、地壳深部和上地幔来源等。不同来源 N2 的地球化学特征有一定... 详细信息

氮气 ( N2 )是天然气中最常见的非烃组分之一。天然气中的 N2 依其成因与来源特征总体可分为大气来源、源岩有机质的生物降解或热分解成因、沉积岩含氮矿物的高温热解成因、地壳深部和上地幔来源等。不同来源 N2 的地球化学特征有一定的差异。对塔里木盆地天然气中 N2 的地球化学特征研究表明 ,该盆地天然气中的 N2 主要来源于有机质的热解 ;由于源岩热演化程度和母质类型的不同而造成该盆地内不同地区天然气的 N2

关键词：天然气氮塔里木盆地地球化学源岩有机质生物降解