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浏览/检索结果: 共12条，第1-10条 帮助 限定条件 发表日期：2012    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 中国城市场强格局演化及空间自相关特征 期刊论文 地理研究, 2012 黄金川; 孙贵艳; 闫梅; 刘涛; 肖磊 收藏  |  浏览/下载：4/0  |  提交时间：2015/11/12 空间自相关  城市作用场强  距离摩擦系数  城市群  spatial autocorrelation  urban field strength  distance friction coefficient  urban agglomeration   Global evapotranspiration over the past three decades: estimation based on the water balance equation combined with empirical models 期刊论文 environmental research letters, 2012 Zeng, Zhenzhong; Piao, Shilong; Lin, Xin; Yin, Guodong; Peng, Shushi; Ciais, Philippe; Myneni, Ranga B. 收藏  |  浏览/下载：4/0  |  提交时间：2015/11/13 evapotranspiration  normalized difference vegetation index (NDVI)  gravity recovery and climate experiment (GRACE) satellites  terrestrial water storage anomaly (TWSA)  POTENTIAL EVAPOTRANSPIRATION  DROUGHT  CLIMATE  TRENDS  WIND   Spatio-temporal patterns of the area experiencing negative vegetation growth anomalies in China over the last three decades 期刊论文 environmental research letters, 2012 Xu, Xiangtao; Piao, Shilong; Wang, Xuhui; Chen, Anping; Ciais, Philippe; Myneni, Ranga B. 收藏  |  浏览/下载：2/0  |  提交时间：2015/11/13 extreme events  vegetation growth  drought  climate change  China  NDVI TIME-SERIES  DROUGHT-INDUCED REDUCTION  NET PRIMARY PRODUCTION  CROP PRODUCTION  CARBON BALANCE  CLIMATE-CHANGE  DIE-OFF  TRENDS  FOREST  SATELLITE   沁河流域水体污染物时空分异特征及潜在污染源识别 期刊论文 环境科学学报, 2012 王翠榆; 杨永辉; 周丰; 盛虎; 向男; 郭怀成 收藏  |  浏览/下载：3/0  |  提交时间：2015/11/12 多元统计 时空联合分析 水质延迟响应现象 水质管理 multivariate statistics spatio-temporal analysis water quality response delay phenomenon water quality management   Satellite detection of increases in global land surface evapotranspiration during 1984-2007 期刊论文 international journal of digital earth, 2012 Yao, Yunjun; Liang, Shunlin; Qin, Qiming; Wang, Kaicun; Liu, Shaomin; Zhao, Shaohua 收藏  |  浏览/下载：5/0  |  提交时间：2015/11/10 digital earth  evapotranspiration  global land surface  satellite radiation products  CONTERMINOUS UNITED-STATES  NET PRIMARY PRODUCTION  POTENTIAL EVAPOTRANSPIRATION  MODEL SIMULATIONS  CLIMATE-CHANGE  RIVER-BASIN  HEAT-FLUX  EVAPORATION  VEGETATION  TRENDS   Novel Spatio-Temporal Structural Information Based Video Quality Metric 期刊论文 ieee transactions on circuits and systems for video technology, 2012 Wang, Yue; Jiang, Tingting; Ma, Siwei; Gao, Wen 收藏  |  浏览/下载：4/0  |  提交时间：2015/11/12 3-D structure tensor  human visual system (HVS)  video quality assessment (VQA)   Spatio-temporal ssim index for video quality assessment 其他 2012-01-01 Wang, Yue; Jiang, Tingting; Ma, Siwei; Gao, Wen 收藏  |  浏览/下载：2/0  |  提交时间：2015/11/17 Low bit-rate video coding via mode-dependent adaptive regression for wireless visual communications 其他 2012-01-01 Liu, Xianming; Wu, Xiaolin; Gao, Xinwei; Zhao, Debin; Gao, Wen 收藏  |  浏览/下载：4/0  |  提交时间：2015/11/17 Impacts of climate and CO2 changes on the vegetation growth and carbon balance of Qinghai-Tibetan grasslands over the past five decades 期刊论文 global and planetary change, 2012 Piao, Shilong; Tan, Kun; Nan, Huijuan; Ciais, Philippe; Fang, Jingyun; Wang, Tao; Vuichard, Nicolas; Zhu, Biao 收藏  |  浏览/下载：3/0  |  提交时间：2015/11/10 carbon cycle  carbon balance  climate warming  grassland  Qinghai-Tibetan Plateau  NET PRIMARY PRODUCTION  SOIL ORGANIC-CARBON  TERRESTRIAL ECOSYSTEMS  ALPINE MEADOW  PLANT GEOGRAPHY  CHINA  PLATEAU  DYNAMICS  ATMOSPHERE  MODEL   Correlating mobile phone usage and travel behavior - A case study of Harbin, China 期刊论文 computers environment and urban systems, 2012 Yuan, Yihong; Raubal, Martin; Liu, Yu 收藏  |  浏览/下载：7/0  |  提交时间：2015/11/12 Information and communication technologies (ICTs)  Mobile phone  Human mobility  Geographic knowledge discovery  IMPACT