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科研机构
北京大学 [5906]
内容类型
期刊论文 [4402]
其他 [1314]
会议论文 [159]
报纸 [31]
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2017 [325]
2016 [400]
2015 [328]
2014 [288]
2013 [325]
2012 [352]
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专题:北京大学
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Critical climate periods for grassland productivity on China's Loess Plateau
期刊论文
AGRICULTURAL AND FOREST METEOROLOGY, 2017
Guo, Liang
;
Cheng, Jimin
;
Luedeling, Eike
;
Koerner, Sally E.
;
He, Jin-Sheng
;
Xu, Jianchu
;
Gang, Chengcheng
;
Li, Wei
;
Luo, Ruimin
;
Peng, Changhui
收藏
  |  
浏览/下载:8/0
  |  
提交时间:2017/12/03
Aboveground net primary productivity (ANPP)
Partial least squares regression (PLS)
Precipitation
Temperate grassland
Temperature
Timing of climate variability
NET PRIMARY PRODUCTIVITY
PRECIPITATION VARIABILITY
ABOVEGROUND PRODUCTIVITY
SEASONAL PRECIPITATION
INTERANNUAL VARIATION
RAINFALL VARIABILITY
TEMPERATE GRASSLAND
TEMPORAL VARIATION
MESIC GRASSLAND
NORTH-AMERICAN
Climate mitigation from vegetation biophysical feedbacks during the past three decades
期刊论文
NATURE CLIMATE CHANGE, 2017
Zeng, Zhenzhong
;
Piao, Shilong
;
Li, Laurent Z. X.
;
Zhou, Liming
;
Ciais, Philippe
;
Wang, Tao
;
Li, Yue
;
Lian, Xu
;
Wood, Eric F.
;
Friedlingstein, Pierre
;
Mao, Jiafu
;
Estes, Lyndon D.
;
Myneni, Ranga B.
;
Peng, Shushi
;
Shi, Xiaoying
;
Seneviratne, Sonia I.
;
Wang, Yingping
收藏
  |  
浏览/下载:16/0
  |  
提交时间:2017/12/03
GENERAL-CIRCULATION
EVAPOTRANSPIRATION
DEFORESTATION
FORESTS
MODEL
CYCLE
IMPACT
BIASES
COVER
A snow-free vegetation index for improved monitoring of vegetation spring green-up date in deciduous ecosystems
期刊论文
REMOTE SENSING OF ENVIRONMENT, 2017
Wang, Cong
;
Chen, Jin
;
Wu, Jin
;
Tang, Yanhong
;
Shi, Peijun
;
Black, T. Andrew
;
Zhu, Kai
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
Vegetation phenology
Green-up date
Remote sensing
Snowmelt
NDPI
Climate change
DIGITAL REPEAT PHOTOGRAPHY
CARBON-DIOXIDE EXCHANGE
DIFFERENCE WATER INDEX
LAND-SURFACE PHENOLOGY
TIBETAN PLATEAU
GROWING-SEASON
BOREAL REGIONS
HIGH-LATITUDES
SATELLITE DATA
CLIMATE-CHANGE
Petrol filling workers as biomonitor of PAH exposure and functional health capacity in resource-limited settings of city Rawalpindi, Pakistan
期刊论文
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2017
Rashid, Audil
;
Tao, Shu
;
Uddin, Ikhtiar
;
Kamal, Atif
收藏
  |  
浏览/下载:12/0
  |  
提交时间:2017/12/03
Occupational health
Exposure assessment
Risk analysis
Biomonitoring
POLYCYCLIC AROMATIC-HYDROCARBONS
BRICK KILN WORKERS
OCCUPATIONAL-EXPOSURE
BLOOD
RISK
QUANTIFICATION
BIOMARKERS
COMBUSTION
AREA
Post-fire dispersal characteristics of charcoal particles in the Daxing'an Mountains of north-east China and their implications for reconstructing past fire activities
期刊论文
INTERNATIONAL JOURNAL OF WILDLAND FIRE, 2017
Li, Yiyin
;
Xu, Xin
;
Zhao, Pengfei
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
biomass burning
larch forest
wildfire
FOREST-FIRE
MACROSCOPIC CHARCOAL
MICROSCOPIC CHARCOAL
HOLOCENE FIRE
SOURCE AREA
RECORDS
DEPOSITION
REGIMES
BOREAL
HISTORY
基于修正Z指数的辽西北春旱演变分析
期刊论文
干旱区地理, 2017
曹永强
;
郑爽
;
范帅邦
;
郭明
收藏
  |  
浏览/下载:117/0
  |  
提交时间:2017/12/03
春旱
Z指数修正
演变特征
时空特性
辽西北
spring drought
Z-Index adjustment
evolution rule
spatial and temporal characteristics
north west Liaoning
环境水体中违禁药物的分析方法
期刊论文
环境化学, 2017
侯琳琳
;
邓德华
;
李素娟
;
赵国燕
;
李喜青
;
张蒙蒙
;
张晓婵
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
违禁药物
分析方法
环境水体
液相色谱-串联质谱
illicit drugs
analytical methods
environmental waters
LC-MS/MS
高校教师党支部功能定位研究——基于北京大学教师党支部的调查与分析
期刊论文
北京教育(德育), 2017
王新茹
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
高校
基层党建
教师
Reply to comment by Z. Yi et al. on "Remagnetization of the Paleogene Tibetan Himalayan carbonate rocks in the Gamba area: Implications for reconstructing the lower plate in the India-Asia collision"
期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 2017
Huang, Wentao
;
Lippert, Peter C.
;
Jackson, Michael J.
;
Dekkers, Mark J.
;
Zhang, Yang
;
Li, Juan
;
Guo, Zhaojie
;
Kapp, Paul
;
van Hinsbergen, Douwe J. J.
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
SOUTHERN TIBET
PALEOMAGNETIC CONSTRAINTS
GREATER INDIA
SEDIMENTS
HYPOTHESIS
AGE
Relativistic electron dynamics produced by azimuthally localized poloidalmode ULF waves: Boomerang-shaped pitch angle evolutions
期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2017
Hao, Y. X.
;
Zong, Q.G.
;
Zhou, X.Z.
;
Rankin, R.
;
Chen, X. R.
;
Liu, Y.
;
Fu, S. Y.
;
Spence, H. E.
;
Blake, J. B.
;
Reeves, G. D.
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
CHARGED-PARTICLE BEHAVIOR
ALLEN PROBES OBSERVATIONS
FREQUENCY GEOMAGNETIC-PULSATIONS
FIELD
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