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科研机构
北京大学 [696]
内容类型
期刊论文 [599]
其他 [77]
会议论文 [19]
研究报告 [1]
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2017 [54]
2016 [64]
2015 [49]
2014 [60]
2013 [43]
2012 [57]
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专题:北京大学
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Neighborhood-scale urban form, travel behavior, and CO2 emissions in Beijing: implications for low-carbon urban planning
期刊论文
URBAN GEOGRAPHY, 2017
Liu, Zhilin
;
Ma, Jing
;
Chai, Yanwei
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
Urban form
travel behavior
CO2 emission
structural equation model (SEM)
Beijing
EQUATIONS MODELING APPROACH
RESIDENTIAL SELF-SELECTION
CLIMATE-CHANGE MITIGATION
BUILT ENVIRONMENT
ENERGY-CONSUMPTION
EMPIRICAL-ANALYSIS
TRANSPORT
DENSITY
STRATEGIES
IMPACTS
In-depth analysis of core methanogenic communities from high elevation permafrost-affected wetlands
期刊论文
SOIL BIOLOGY & BIOCHEMISTRY, 2017
Yang, Sizhong
;
Liebner, Susanne
;
Winkel, Matthias
;
Alawi, Mashal
;
Horn, Fabian
;
Doerfer, Corina
;
Ollivier, Julien
;
He, Jin-Sheng
;
Jin, Huijun
;
Kuehn, Peter
;
Schloter, Michael
;
Scholten, Thomas
;
Wagner, Dirk
收藏
  |  
浏览/下载:106/0
  |  
提交时间:2017/12/03
Methanogenic archaea
Wetland
mcTA gene
Frozen ground
Tibetan Plateau
Biogeography
Methanoregula
QINGHAI-TIBET PLATEAU
METHANE EMISSIONS
MICROBIAL COMMUNITY
THAWING PERMAFROST
POLYGONAL TUNDRA
ZOIGE WETLAND
LENA DELTA
PEAT BOG
CARBON
ECOSYSTEMS
Assessing sustainable development of a historic district using an ecological footprint model: a case study of Nanluoguxiang in Beijing, China
期刊论文
AREA, 2017
Dai, Linlin
;
Xu, Bixia
;
Wu, Bihu
收藏
  |  
浏览/下载:8/0
  |  
提交时间:2017/12/03
Nanluoguxiang
Beijing
historic district
ecological footprint
ecological carrying capacity
sustainable development
ENVIRONMENTAL SUSTAINABILITY
Demand-driven primary energy requirements by Chinese economy 2012
其他
2017-01-01
Qu, Xue
;
Meng, Jing
;
Sun, Xudong
;
Zhang, Bo
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2017/12/03
Embodied energy
Input-output model
Structural path analysis
Domestic supply chains
Chinese economy
Can niche plasticity promote biodiversity-productivity relationships through increased complementarity?
期刊论文
ECOLOGY, 2017
Niklaus, Pascal A.
;
Baruffol, Martin
;
He, Jin-Sheng
;
Ma, Keping
;
Schmid, Bernhard
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
additive partitioning
biodiversity-productivity relationships
canopy stratification
competition
complementarity
functional trait dissimilarity
niche overlap
niche plasticity
subtropical tree stands
PLANT-SPECIES DIVERSITY
CROWN PLASTICITY
FORESTS
LIGHT
TREE
COMMUNITIES
GRASSLANDS
RICHNESS
NITROGEN
BIOMASS
地理背景的不确定性对时空行为模式分析的影响——基于西宁市的实证研究
期刊论文
地理学报, 2017
谭一洺
;
柴彦威
;
关美宝
收藏
  |  
浏览/下载:8/0
  |  
提交时间:2017/12/03
不确定地理背景问题
时空行为
活动空间
结构方程模型
西宁市
uncertain geographic context problem
space-time behavior
activity space
structural equation modelling
Xining
y Nitrous oxide emissions from different land uses affected by managements on the Qinghai-Tibetan Plateau
期刊论文
AGRICULTURAL AND FOREST METEOROLOGY, 2017
Zhang, Zhenhua
;
Zhu, Xiaoxue
;
Wang, Shiping
;
Duan, Jichuang
;
Chang, Xiaofeng
;
Luo, Caiyun
;
He, Jin-Sheng
;
Wilkes, Andreas
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2017/12/03
Land use change
Nitrogen fertilization
Conventional tillage
Nitrous oxide emissions
GREENHOUSE-GAS EMISSIONS
ALPINE MEADOW
N2O EMISSIONS
TILLAGE SYSTEMS
CARBON-DIOXIDE
NO-TILL
SOIL
GRASSLAND
ECOSYSTEM
CLIMATE
普光气田须家河组致密砂岩构造裂缝特征及成因探讨
期刊论文
科学技术与工程, 2017
熊金红
;
陈岑
;
李韶凯
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
普光气田
须家河组
裂缝特征
成因分析
Puguang gas field
Xujiahe formation
fracture characteristic
cause analysis
Strain modelling of extensional fault-propagation folds based on an improved non-linear trishear model: A numerical simulation analysis
期刊论文
JOURNAL OF STRUCTURAL GEOLOGY, 2017
Zhao, Haonan
;
Guo, Zhaojie
;
Yu, Xiangjiang
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
Strain analysis
Extensional fault-propagation fold
Trishear model
Numerical simulation
Shape factor
SUEZ-RIFT
EXAMPLES
EGYPT
SETTINGS
GEOMETRY
SEQUENCE
STYLE
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
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