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科研机构
北京大学 [8299]
内容类型
期刊论文 [5528]
其他 [2498]
会议论文 [270]
研究报告 [3]
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2017 [625]
2016 [826]
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专题:北京大学
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Environmental reconstruction and dating of Shizitan 29, Shanxi Province: An early microblade site in north China
期刊论文
JOURNAL OF ARCHAEOLOGICAL SCIENCE, 2017
Song, Yanhua
;
Cohen, David J.
;
Shi, Jinming
;
Wu, Xiaohong
;
Kvavadze, Eliso
;
Goldberg, Paul
;
Zhang, Shuangquan
;
Zhang, Yue
;
Bar-Yosef, Ofer
收藏
  |  
浏览/下载:29/0
  |  
提交时间:2017/12/03
North China
Shizitan site
Last Glacial Maximum
Micromorphology
Non-pollen palynomorphs
BONE PRETREATMENT METHODS
LAST GLACIAL MAXIMUM
LATE PLEISTOCENE
CLIMATE-CHANGE
WILD FLAX
EXPLOITATION
NETHERLANDS
TECHNOLOGY
FIBERS
BP
Household air pollution and personal exposure to nitrated and oxygenated polycyclic aromatics (PAHs) in rural households: Influence of household cooking energies
期刊论文
INDOOR AIR, 2017
Chen, Y.
;
Du, W.
;
Shen, G.
;
Zhuo, S.
;
Zhu, X.
;
Shen, H.
;
Huang, Y.
;
Su, S.
;
Lin, N.
;
Pei, L.
;
Zheng, X.
;
Wu, J.
;
Duan, Y.
;
Wang, X.
;
Liu, W.
;
Wong, M.
;
Tao, S.
收藏
  |  
浏览/下载:33/0
  |  
提交时间:2017/12/03
Nitrated as polycyclic aromatic hydrocarbons
Oxygenated as polycyclic aromatic hydrocarbons
Household air
Personal exposure
Household energies
Smoking behavior
DEVELOPING-COUNTRIES
AMBIENT AIR
NORTHERN CHINA
HYDROCARBONS
COMBUSTION
EMISSIONS
URBAN
RISK
PRODUCTS
SHANXI
Mapping Development Pattern in Beijing-Tianjin-Hebei Urban Agglomeration Using DMSP/OLS Nighttime Light Data
期刊论文
REMOTE SENSING, 2017
Hu, Yi&apos
;
Peng, Jian
;
Liu, Yanxu
;
Du, Yueyue
;
Li, Huilei
;
Wu, Jiansheng
;
na
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
spatial inequality
urbanization type
DMSP/OLS
Beijing-Tianjin-Hebei urban agglomeration
CHINA
URBANIZATION
MEGALOPOLIS
PERSPECTIVE
EXPANSION
DYNAMICS
CITY
OLS
INEQUALITY
LUMINOSITY
Assessing Agricultural Drought Vulnerability by a VSD Model: A Case Study in Yunnan Province, China
期刊论文
SUSTAINABILITY, 2017
Wu, Jiansheng
;
Lin, Xin
;
Wang, Meijuan
;
Peng, Jian
;
Tu, Yuanjie
收藏
  |  
浏览/下载:9/0
  |  
提交时间:2017/12/03
agricultural drought vulnerability
VSDmode
factor contributionmethod
Yunnan Province
CLIMATE-CHANGE
RISK
FRAMEWORK
DISASTERS
HAZARD
MAIZE
WHEAT
Global patterns of interaction specialization in bird-flower networks
期刊论文
JOURNAL OF BIOGEOGRAPHY, 2017
Zanata, Thais B.
;
Dalsgaard, Bo
;
Passos, Fernando C.
;
Cotton, Peter A.
;
Roper, James J.
;
Maruyama, Pietro K.
;
Fischer, Erich
;
Schleuning, Matthias
;
Gonzalez, Ana M. Martin
;
Vizentin-Bugoni, Jeferson
;
Franklin, Donald C.
;
Abrahamczyk, Stefan
;
Alarcon, Ruben
;
Araujo, Andrea C.
;
Araujo, Francielle P.
;
de Azevedo-Junior, Severino M.
;
Baquero, Andrea C.
;
Boehning-Gaese, Katrin
;
Carstensen, Daniel W.
;
Chupil, Henrique
;
Coelho, Aline G.
;
Faria, Rogerio R.
;
Horak, David
;
Ingversen, Tanja T.
;
Janecek, Stepan
;
Kohler, Glauco
;
Lara, Carlos
;
Las
收藏
  |  
浏览/下载:31/0
  |  
提交时间:2017/12/03
honeyeaters
hummingbirds
modularity
niche partitioning
ornithophily
plant-animal interactions
specialization
sunbirds
SEED-DISPERSAL NETWORKS
NECTAR-FEEDING BIRDS
POLLINATION SYSTEMS
ECOLOGICAL SPECIALIZATION
MUTUALISTIC NETWORKS
SPECIES RICHNESS
RAIN-FOREST
PLANT
HUMMINGBIRDS
EVOLUTIONARY
Simultaneous Estimation of Leaf Area Index, Fraction of Absorbed Photosynthetically Active Radiation, and Surface Albedo From Multiple-Satellite Data
期刊论文
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2017
Ma, Han
;
Liu, Qiang
;
Liang, Shunlin
;
Xiao, Zhiqiang
收藏
  |  
浏览/下载:22/0
  |  
提交时间:2017/12/03
Fraction of absorbed photosynthetically active radiation (FAPAR)
leaf area index (LAI)
multiple sensors
simultaneous estimation
surface albedo
CANOPY REFLECTANCE MODEL
FOLIAGE CLUMPING INDEX
IN-SITU MEASUREMENTS
SNOW-COVER
MODIS DATA
BIDIRECTIONAL REFLECTANCE
ACCURACY ASSESSMENT
NOAA AVHRR
MISR DATA
LAND
Historical factors shaped species diversity and composition of Salix in eastern Asia
期刊论文
SCIENTIFIC REPORTS, 2017
Wang, Qinggang
;
Su, Xiangyan
;
Shrestha, Nawal
;
Liu, Yunpeng
;
Wang, Siyang
;
Xu, Xiaoting
;
Wang, Zhiheng
收藏
  |  
浏览/下载:12/0
  |  
提交时间:2017/12/03
POSTGLACIAL DISPERSAL LIMITATION
WATER-ENERGY DYNAMICS
FREEZING RESISTANCE
NICHE CONSERVATISM
PLANT DIVERSITY
SOUTHERN AFRICA
GLOBAL PATTERNS
RICHNESS
CLIMATE
EUROPE
Increasing temperature reduces the coupling between available nitrogen and phosphorus in soils of Chinese grasslands
期刊论文
SCIENTIFIC REPORTS, 2017
Geng, Yan
;
Baumann, Frank
;
Song, Chao
;
Zhang, Mi
;
Shi, Yue
;
Kuhn, Peter
;
Scholten, Thomas
;
He, Jin-Sheng
收藏
  |  
浏览/下载:101/0
  |  
提交时间:2017/12/03
N-P RATIOS
TIBETAN PLATEAU
TERRESTRIAL ECOSYSTEMS
SEMIARID GRASSLAND
ORGANIC-MATTER
CLIMATE-CHANGE
LEAF-N
PLANT
STOICHIOMETRY
CARBON
An Improved Estimation of Regional Fractional Woody/Herbaceous Cover Using Combined Satellite Data and High-Quality Training Samples
期刊论文
REMOTE SENSING, 2017
Liu, Xu
;
Liu, Hongyan
;
Qiu, Shuang
;
Wu, Xiuchen
;
Tian, Yuhong
;
Hao, Qian
收藏
  |  
浏览/下载:8/0
  |  
提交时间:2017/12/03
vegetation fractional cover
semi-arid area
MODIS
satellite data integration
spatial sampling design
image classification
Random Forest regression
model performance evaluation
LAND-COVER
INNER-MONGOLIA
MODIS DATA
VEGETATION
SURFACE
STEPPE
FOREST
COEXISTENCE
TOPOGRAPHY
TRANSITION
城乡结合部农业地域功能实现程度及变化趋势——以北京为例
期刊论文
地理研究, 2017
刘玉
;
冯健
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
城乡结合部
地域功能
农业多功能
实现程度
变化趋势
rural-urban fringe
regional function
multi-functionality of agriculture
execution
change
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