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浏览/检索结果: 共262条，第1-10条 帮助 限定条件 发表日期：2017    专题：北京大学    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Understanding the Possible Contamination of Ancient Starch Residues by Adjacent Sediments and Modern Plants in Northern China 期刊论文 SUSTAINABILITY, 2017 Ma, Zhikun; Zhang, Chi; Li, Quan; Perry, Linda; Yang, Xiaoyan 收藏  |  浏览/下载：51/0  |  提交时间：2017/12/03 starch grain analysis  potential contamination  cultural deposits  sustainable use  GRAIN ANALYSIS  STONE TOOLS  DOMESTICATION  REVEAL  ARTIFACTS  VALLEY  FOODS  RICE   东周青铜器铅同位素比值的初步研究 期刊论文 南方文物, 2017 张吉; 陈建立 收藏  |  浏览/下载：6/0  |  提交时间：2017/12/03 东周  青铜器  铅同位素比值   The emergence of pottery in China: Recent dating of two early pottery cave sites in South China 期刊论文 QUATERNARY INTERNATIONAL, 2017 Cohen, David J.; Bar-Yosef, Ofer; Wu, Xiaohong; Patania, Ilaria; Goldberg, Paul 收藏  |  浏览/下载：33/0  |  提交时间：2017/12/03 South China  Upper Paleolithic  Pottery  Hunter-gatherers  Yuchanyan  Xianrendong  EARLIEST EVIDENCE  REGION  AGRICULTURE  PROVINCE  ORIGIN  JAPAN  VIEW  ASH   城市形态的分维估算与分形判定 期刊论文 地理科学进展, 2017 陈彦光 收藏  |  浏览/下载：8/0  |  提交时间：2017/12/03 城市形态  分形  分维  自仿射  盒子计数法  多分形  标度区  urban form  fractals  fractal dimension  self-affinity  box-counting method  multifractals  scaling range   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   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   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   Positive effects of tree species diversity on litterfall quantity and quality along a secondary successional chronosequence in a subtropical forest 期刊论文 JOURNAL OF PLANT ECOLOGY, 2017 Huang, Yuanyuan; Ma, Yinlei; Zhao, Ke; Niklaus, Pascal A.; Schmid, Bernhard; He, Jin-Sheng 收藏  |  浏览/下载：7/0  |  提交时间：2017/12/03 species richness  BEF-China  litterfall  leaf litter C/N  subtropical forest  secondary succession  structural equation models  NET PRIMARY PRODUCTION  STAND DEVELOPMENT  TROPICAL FORESTS  STOICHIOMETRY  NITROGEN  PRODUCTIVITY  RICHNESS  COMPLEMENTARITY  DECOMPOSITION  ASPEN   A potential large and persistent black carbon forcing over Northern Pacific inferred from satellite observations 期刊论文 SCIENTIFIC REPORTS, 2017 Li, Zhongshu; Liu, Junfeng; Mauzerall, Denise L.; Li, Xiaoyuan; Fan, Songmiao; Horowitz, Larry W.; He, Cenlin; Yi, Kan; Tao, Shu 收藏  |  浏览/下载：6/0  |  提交时间：2017/12/03 EASTERN CHINA  AEROSOL  AEROCOM  EMISSIONS  SIMULATIONS  TRANSPORT  MONOXIDE  MODELS  GASES   Polycyclic aromatic hydrocarbons in ambient air, surface soil and wheat grain near a large steel-smelting manufacturer in northern China 期刊论文 环境科学学报（英文版）, 2017 Weijian Liu; Yilong Wang; Yuanchen Chen; Shu Tao; Wenxin Liu 收藏  |  浏览/下载：106/0  |  提交时间：2017/12/03 PAHs Ambient air Surface soil Wheat grain Steel-smelting activity  PAHs  Ambient air  Surface soil  Wheat grain  Steel-smelting activity