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科研机构
北京大学 [151]
内容类型
期刊论文 [124]
其他 [26]
会议论文 [1]
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2017 [18]
2016 [16]
2015 [16]
2014 [11]
2013 [9]
2012 [14]
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专题:北京大学
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中国出口产业的空间格局演变
期刊论文
经济地理, 2017
李伟
;
贺灿飞
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
贸易
出口
原材料类产品
劳动密集型产业
技术密集型产业
空间格局演变
中国
trade
export
raw materials products
labor-intensive industries
technology intensive industries
spatial restructure
山岳型风景区零售网点租金测算——以黄山风景区为例
期刊论文
热带地理, 2017
祁黄雄
;
邹晓萌
;
蒋长春
;
马娜
;
林燊
;
林俞先
;
费伟成
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2017/12/03
零售网点
租金测算
黄山风景区
retail store
rent calculation
Huangshan scenic area
Spatial-temporal dynamics and associated driving forces of urban ecological land: A case study in Shenzhen City, China
期刊论文
HABITAT INTERNATIONAL, 2017
Peng, Jian
;
Zhao, Mingyue
;
Guo, Xiaonan
;
Pan, Yajing
;
Liu, Yanxu
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2017/12/03
Urban ecological land
Ecological land quality
Driving forces
Multiple logistic regression
Shenzhen city China
RAPID URBANIZATION
ECOSYSTEM SERVICES
LANDSCAPE CHANGE
COVER
PATTERNS
AREA
PROTECTION
EXPANSION
SECURITY
IMPACTS
Retrieving the gap fraction, element clumping index, and leaf area index of individual trees using single-scan data from a terrestrial laser scanner
期刊论文
ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING, 2017
Li, Yumei
;
Guo, Qinghua
;
Su, Yanjun
;
Tao, Shengli
;
Zhao, Kaiguang
;
Xu, Guangcai
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
Destructive sample
Extinction coefficient
Single scanning
Terrestrial laser scanning
Riegl VZ-400
GROUND-BASED LIDAR
HEMISPHERICAL PHOTOGRAPHY
ANGLE DISTRIBUTION
FOREST STRUCTURE
PLANT CANOPIES
BOREAL FORESTS
STANDS
ARCHITECTURE
DERIVATION
DENSITY
Estimating structural parameters of agricultural crops from ground-based multi-angular digital images with a fractional model of sun and shade components
期刊论文
AGRICULTURAL AND FOREST METEOROLOGY, 2017
Mu, Xihan
;
Hu, Ronghai
;
Zeng, Yelu
;
McVicar, Tim R.
;
Ren, Huazhong
;
Song, Wanjuan
;
Wang, Yuanyuan
;
Casa, Raffaele
;
Qi, Jianbo
;
Xie, Donghui
;
Yan, Guangjian
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
Leaf area index
Leaf angle distribution
Bidirectional gap fraction
Sun and shade leaves and soil
Field measurement
Canopy reflectance
LEAF-AREA INDEX
DIRECTIONAL BRIGHTNESS TEMPERATURE
SIZE ANALYSIS THEORY
VEGETATION COVER
HEMISPHERICAL PHOTOGRAPHY
PLANT CANOPIES
ROW CROPS
EXTINCTION COEFFICIENT
BROADLEAF CANOPIES
ANGLE DISTRIBUTION
塔里木盆地阿克苏地区下寒武统玉尔吐斯组两套黑色岩系的差异及成因
期刊论文
岩石学报, 2017
杨宗玉
;
罗平
;
刘波
;
刘策
;
马洁
;
陈斐然
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
玉尔吐斯组
黑色页岩
沉积学特征
地球化学特征
控制因素
Yurtus Formation
Black shale
Sedimentology characteristics
Geochemical features
Controlling factors
RARE-EARTH-ELEMENTS
YANGTZE GORGES AREA
SOUTH CHINA
DEPOSITIONAL ENVIRONMENT
SHALLOW SEAWATER
OCEANIC ANOXIA
ORGANIC-CARBON
TRACE-ELEMENTS
GEOCHEMISTRY
SHALES
Trapped bubbles keep pumice afloat and gas diffusion makes pumice sink
期刊论文
EARTH AND PLANETARY SCIENCE LETTERS, 2017
Fauria, Kristen E.
;
Manga, Michael
;
Wei, Zihan
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
buoyancy
capillary processes
percolation theory
submarine volcanism
X-ray microtomography
IMMISCIBLE DISPLACEMENT
EXPLOSIVE ERUPTION
PERMEABILITY
PERCOLATION
CONSTRAINTS
TOMOGRAPHY
SATURATION
VOLCANISM
PRODUCTS
MODEL
Influence of inherent iron and oxygen concentrations on selenite sorption process using bentonite
期刊论文
SCIENCE CHINA-CHEMISTRY, 2017
He, Jiangang
;
Qiao, Xueling
;
Shi, Yanlin
;
Li, Yao
;
Yang, Xiaoyu
;
Zhou, Wanqiang
;
Liu, Chunli
收藏
  |  
浏览/下载:18/0
  |  
提交时间:2017/12/03
Se(IV) sorption
ferric selenite
green rust
bentonite
replacement
XANES
MONTMORILLONITE CLAY
GREEN RUST
REDUCTION
FE(II)
FE
SPECTROSCOPY
OXIDATION
SMECTITE
OXIDES
300-DEGREES-C
Emission inventory and provincial distribution of short-chain chlorinated paraffins in China
期刊论文
SCIENCE OF THE TOTAL ENVIRONMENT, 2017
Zhang, Boya
;
Zhao, Bu
;
Xu, Chun
;
Zhang, Jianbo
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2017/12/03
Short-chain chlorinated paraffins
Alternative factor method
Variation coefficient method
Analytic hierarchy process
National emission inventory
Provincial distribution
HEXACHLOROCYCLOHEXANE
ALKANES
Sources and spatial distribution of particulate polycyclic aromatic hydrocarbons in Shanghai, China
期刊论文
SCIENCE OF THE TOTAL ENVIRONMENT, 2017
Liu, Yue
;
Yan, Caiqing
;
Ding, Xiang
;
Wang, Xinming
;
Fu, Qingyan
;
Zhao, Qianbiao
;
Zhang, Yihua
;
Duan, Yusen
;
Qiu, Xinghua
;
Zheng, Mei
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
PAHs
Composition profile
Source
Spatial distribution
Shanghai
POSITIVE MATRIX FACTORIZATION
AIR-WATER EXCHANGE
DUTY DIESEL TRUCKS
SOURCE APPORTIONMENT
SOURCE IDENTIFICATION
COAL COMBUSTION
ATMOSPHERIC DEPOSITION
EMISSION INVENTORY
SEASONAL-VARIATION
URBAN-ENVIRONMENT
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