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浏览/检索结果: 共88条，第1-10条 帮助 限定条件 发表日期：2016    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 考古学中的时间不确定性及其数学解决方案 期刊论文 江汉考古, 2016 张海 收藏  |  浏览/下载：4/0  |  提交时间：2017/12/03 蒙特卡洛区域系统调查碳十四测年等时段   Agricultural drought monitoring: Progress, challenges, and prospects 期刊论文 JOURNAL OF GEOGRAPHICAL SCIENCES, 2016 Liu Xianfeng; Zhu Xiufang; Pan Yaozhong; Li Shuangshuang; Liu Yanxu; Ma Yuqi 收藏  |  浏览/下载：3/0  |  提交时间：2017/12/03 agricultural drought  drought monitoring  research progress  research prospect  REMOTE-SENSING DATA  SEVERITY INDEX  SOIL-MOISTURE  UNITED-STATES  VEGETATION  WATER  STRESS  SPACE  VALIDATION  DYNAMICS   Spatial identification of multifunctional landscapes and associated influencing factors in the Beijing-Tianjin-Hebei region, China 期刊论文 APPLIED GEOGRAPHY, 2016 Peng, Jian; Chen, Xin; Liu, Yanxu; Lu, Huiling; Hu, Xiaoxu 收藏  |  浏览/下载：6/0  |  提交时间：2017/12/03 Multifunctional landscapes  Spatial identification  Landscape function interactions  Influencing factors  Beijing-Tianjin-Hebei region  China  ECOSYSTEM SERVICES  LAND-USE  MODEL  INDICATORS  DYNAMICS  IMPLEMENTATION  URBANIZATION  RESTORATION  IMPACTS   A spatio-temporal analysis of urban crime in Beijing: Based on data for property crime 期刊论文 URBAN STUDIES, 2016 Feng, Jian; Dong, Ying; Song, Leilei 收藏  |  浏览/下载：7/0  |  提交时间：2017/12/03 Beijing  site  property crime  urban crime  urban spatial structure  SPATIAL DYNAMICS  VIOLENT CRIME  PATTERNS  TIME  STATISTICS  TRANSITION  AREAS  CHINA  CITY   Combining livestock production information in a process-based vegetation model to reconstruct the history of grassland management 期刊论文 BIOGEOSCIENCES, 2016 Chang, Jinfeng; Ciais, Philippe; Herrero, Mario; Havlik, Petr; Campioli, Matteo; Zhang, Xianzhou; Bai, Yongfei; Viovy, Nicolas; Joiner, Joanna; Wang, Xuhui; Peng, Shushi; Yue, Chao; Piao, Shilong; Wang, Tao; Hauglustaine, Didier A.; Soussana, Jean-Francois; Peregon, Anna; Kosykh, Natalya; Mironycheva-Tokareva, Nina 收藏  |  浏览/下载：3/0  |  提交时间：2017/12/04 PASTURE SIMULATION-MODEL  NET PRIMARY PRODUCTION  LAND-COVER  CHLOROPHYLL FLUORESCENCE  EUROPEAN GRASSLANDS  GLOBAL DATABASE  CARBON BALANCE  CLIMATE-CHANGE  DATA SET  BIOMASS   Dynamic Ecological Risk Assessment and Management of Land Use in the Middle Reaches of the Heihe River Based on Landscape Patterns and Spatial Statistics 期刊论文 SUSTAINABILITY, 2016 Fan, Jiahui; Wang, Ya; Zhou, Zhen; You, Nanshan; Meng, Jijun 收藏  |  浏览/下载：2/0  |  提交时间：2017/12/04 landscape pattern  ecological risk  spatial statistics  dynamic evaluation  Heihe River  CHINA   Inventory of anthropogenic methane emissions in mainland China from 1980 to 2010 期刊论文 ATMOSPHERIC CHEMISTRY AND PHYSICS, 2016 Peng, Shushi; Piao, Shilong; Bousquet, Philippe; Ciais, Philippe; Li, Bengang; Lin, Xin; Tao, Shu; Wang, Zhiping; Zhang, Yuan; Zhou, Feng 收藏  |  浏览/下载：5/0  |  提交时间：2017/12/03 GLOBAL ATMOSPHERIC METHANE  ENERGY ACTIVITIES  GREENHOUSE GASES  CO2 EMISSIONS  COMBUSTION  CH4  POLLUTANTS  LIVESTOCK  ETHANE  FIELDS   Observational investigation of the possible correlation between medium-scale TIDs and mid-latitude spread F 期刊论文 ADVANCES IN SPACE RESEARCH, 2016 Yu, Shimei; Xiao, Zuo; Aa, Ercha; Hao, Yongqiang; Zhang, Donghe 收藏  |  浏览/下载：5/0  |  提交时间：2017/12/03 Traveling ionospheric disturbances  Mid-latitude spread F  Gravity waves  TRAVELING IONOSPHERIC DISTURBANCES  SOLAR-CYCLE VARIATIONS  OCCURRENCE STATISTICS  AMERICAN LONGITUDES  CREST  ZONE  GPS  PROPAGATION  PARAMETERS  ATMOSPHERE   Statistics of the field-aligned currents at the high-latitude energetic electron boundaries in the nightside: Cluster observation 期刊论文 JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2016 Ren, Jie; Zong, Q. G.; Zhou, X. Z.; Zhang, Hui; Fu, S. Y.; Wang, Y. F.; Liu, Yong C.M. 收藏  |  浏览/下载：7/0  |  提交时间：2017/12/03 SCALE BIRKELAND CURRENTS  PLASMA SHEET BOUNDARY  DAWN-DUSK ASYMMETRY  MAGNETIC-FIELD  SOLAR-WIND  INNER MAGNETOSPHERE  CURRENT SYSTEM  RING CURRENT  MODEL  REGION   High resolution urban image classification combining edge statistical features 其他 2016-01-01 Zhao, Wenzhi; Du, Shihong; Guo, Zhou 收藏  |  浏览/下载：6/0  |  提交时间：2017/12/03