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科研机构
北京大学 [849]
内容类型
期刊论文 [515]
其他 [312]
会议论文 [22]
发表日期
2017 [55]
2016 [85]
2015 [97]
2014 [78]
2013 [74]
2012 [46]
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专题:北京大学
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Saturation Correction for Nighttime Lights Data Based on the Relative NDVI
期刊论文
REMOTE SENSING, 2017
Wang, Zheng
;
Yao, Fei
;
Li, Weifeng
;
Wu, Jiansheng
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
DMSP/OLS
nighttime lights
saturation correction
relative NDVI
NET PRIMARY PRODUCTIVITY
SATELLITE IMAGERY
ECONOMIC-ACTIVITY
HUMAN-SETTLEMENTS
UNITED-STATES
LAND
CONSUMPTION
POPULATION
VEGETATION
EMISSIONS
干旱区景观格局综合优化:黑河中游案例
期刊论文
北京大学学报 自然科学版, 2017
蒙吉军
;
王晓东
;
周朕
收藏
  |  
浏览/下载:13/0
  |  
提交时间:2017/12/03
最小累积阻力模型
生态源地
生态廊道
生态功能分区
格局优化
黑河中游
minimum cumulative resistance model
ecological source
ecological corridor
ecological function regionalization
pattern optimization
middle reaches of Heihe River
以出行路径耗时为测度的城镇体系空间结构研究
期刊论文
经济地理, 2017
杨震
;
吕斌
;
王晶
收藏
  |  
浏览/下载:110/0
  |  
提交时间:2017/12/03
城镇体系
空间结构
出行路径耗时
紧凑度
urban system
space structure
travel time on paths
compactness ratio
Temperature increase reduces global yields of major crops in four independent estimates
期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2017
Zhao, Chuang
;
Liu, Bing
;
Piao, Shilong
;
Wang, Xuhui
;
Lobell, David B.
;
Huang, Yao
;
Huang, Mengtian
;
Yao, Yitong
;
Bassu, Simona
;
Ciais, Philippe
;
Durand, Jean-Louis
;
Elliott, Joshua
;
Ewert, Frank
;
Janssens, Ivan A.
;
Li, Tao
;
Lin, Erda
;
Liu, Qiang
;
Martre, Pierre
;
Mueller, Christoph
;
Peng, Shushi
;
Penuelas, Josep
;
Ruane, Alex C.
;
Wallach, Daniel
;
Wang, Tao
;
Wu, Donghai
;
Liu, Zhuo
;
Zhu, Yan
;
Zhu, Zaichun
;
Asseng, Senthold
收藏
  |  
浏览/下载:14/0
  |  
提交时间:2017/12/03
climate change impact
global food security
major food crops
temperature increase
yield
CLIMATE-CHANGE
WHEAT YIELDS
IMPACTS
GROWTH
RANGE
CHINA
FOOD
Estimation of nutrient discharge from the Yangtze River to the East China Sea and the identification of nutrient sources
期刊论文
JOURNAL OF HAZARDOUS MATERIALS, 2017
Tong, Yindong
;
Bu, Xiaoge
;
Chen, Junyue
;
Zhou, Feng
;
Chen, Long
;
Liu, Maodian
;
Tan, Xin
;
Yu, Tao
;
Zhang, Wei
;
Mi, Zhaorong
;
Ma, Lekuan
;
Wang, Xuejun
;
Ni, Jing
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
Yangtze river
Nutrient discharges
Non-point sources
Yangtze river estuary
Harmful algal blooms
CHANGJIANG RIVER
NITROGEN
FLUXES
IMPACTS
ECOSYSTEM
CLIMATE
CARBON
LOADS
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
Street as a big geo-data assembly and analysis unit in urban studies: A case study using Beijing taxi data
期刊论文
APPLIED GEOGRAPHY, 2017
Zhu, Di
;
Wang, Ninghua
;
Wu, Lun
;
Liu, Yu
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
Street
Linear unit
Spatio-temporal pattern
Big geo-data
Urban study
SPACE SYNTAX
LAND-USE
COMPUTATIONAL METHOD
NETWORK
ALGORITHMS
PATTERNS
POINTS
CITIES
SCALE
TIME
Heterogeneity of direct aftershock productivity of themain shock rupture
期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 2017
Guo, Yicun
;
Zhuang, Jiancang
;
Hirata, Naoshi
;
Zhou, Shiyong
收藏
  |  
浏览/下载:1/0
  |  
提交时间:2017/12/03
TOHOKU-OKI EARTHQUAKE
POINT-PROCESS MODELS
MOMENT-TENSOR SOLUTIONS
PHILIPPINE SEA PLATE
SEISMIC ACTIVITY
STRONG-MOTION
JAPAN SEA
SLIP
PARAMETERS
BENEATH
Validation of a low-cost 2D laser scanner in development of a more-affordable mobile terrestrial proximal sensing system for 3D plant structure phenotyping in indoor environment
期刊论文
COMPUTERS AND ELECTRONICS IN AGRICULTURE, 2017
Wang, Huanhuan
;
Lin, Yi
;
Wang, Zeliang
;
Yao, Yunjun
;
Zhang, Yuhu
;
Wu, Ling
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
Plant phenotyping
Proximal sensing
Low-cost
2D laser scanner
3D plant structure
Indoor environment
LIDAR SENSOR
CROP
PHENOMICS
VEGETATION
CANOPIES
A Time Varying Ventilation and Dust Control Strategy Based on the Temporospatial Characteristics of Dust Dispersion
期刊论文
MINERALS, 2017
Liu, Hui
;
Wu, Xiaohu
;
Mao, Shanjun
;
Li, Mei
;
Yue, Jun
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
cost-effective
time varying ventilation
dust control
CFD
temporospatial characteristics
UNDERGROUND MINES
COAL ROADWAY
SYSTEM
ENVIRONMENT
SIMULATION
FACES
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