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Industrial eco-efficiency and its spatial-temporal differentiation in China
Wei YANG, Fengjun JIN, Chengjin WANG, Chen LV
Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 4, Pages 559-568 doi: 10.1007/s11783-012-0400-4
Keywords: industrial eco-efficiency data envelopment analysis (DEA) model exploratory spatial data analysis (ESDA
Spatial and Temporal Distribution of PM
Xiao-hong Chen,Xiang-bo Tang
Frontiers of Engineering Management 2016, Volume 3, Issue 2, Pages 171-181 doi: 10.15302/J-FEM-2016017
Keywords: PM2.5 spatial and temporal distribution ArcGIS the chang-Zhu-Tan city cluster
Xue LI,Pengjing LI,Dong WANG,Yuqiu WANG
Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 6, Pages 895-904 doi: 10.1007/s11783-014-0736-z
Keywords: Xin'anjiang River multivariable statistical analysis temporal variation spatial variation water quality
A Spatial–Temporal Network Perspective for the Propagation Dynamics of Air Traffic Delays Article
Qing Cai, Sameer Alam, Vu N. Duong
Engineering 2021, Volume 7, Issue 4, Pages 452-464 doi: 10.1016/j.eng.2020.05.027
Keywords: Air traffic Transport systems Delay propagation dynamics Spatial–temporal networks
Temporal and spatial stability of the EM/PM molecular subtypes in adult diffuse glioma
Frontiers of Medicine 2023, Volume 17, Issue 2, Pages 240-262 doi: 10.1007/s11684-022-0936-z
Keywords: glioma progression molecular classification EM/PM subtyping intratumor heterogeneity
Huilong LIN, Ruichao LI, Yifan LIU, Jingrong ZHANG, Jizhou REN
Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 1, Pages 69-80 doi: 10.15302/J-FASE-2017140
Keywords: arable land equivalent unit (ALEU) food equivalent unit (FEU) food security grassland agriculture time trend prediction
Trends of environmental accidents and impact factors in China
Pengli XUE, Weihua ZENG
Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2, Pages 266-276 doi: 10.1007/s11783-010-0267-1
Keywords: environmental accidents spatial and temporal trends environmental risk
High resolution satellite imaging sensors for precision agriculture
Chenghai YANG
Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 4, Pages 393-405 doi: 10.15302/J-FASE-2018226
Keywords: high resolution satellite sensor multispectral imagery precision agriculture spatial resolution temporal
Xin Chen,Youdun Bai,Zhijun Yang,Jian Gao,Gongfa Chen
Engineering 2015, Volume 1, Issue 3, Pages 391-398 doi: 10.15302/J-ENG-2015063
Keywords: high-acceleration low-load mechanism precision positioning spatial and temporal distribution inertial
Xiaofeng Yin, Jiuxu Deng, Bo Chen, Bo Jin, Xinyi Gu, Zhidan Qi, Kunpeng Leng, Baoguo Jiang
Engineering 2022, Volume 14, Issue 7, Pages 147-155 doi: 10.1016/j.eng.2021.04.018
Keywords: Peripheral nerve Brain Evoked cortex potential Temporal–spatial Atlas
Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-021-1393-7
• The long-period groundwater evolution was identified by hydrochemical signatures.
Keywords: Groundwater quality Hydrochemical signatures Spatial-temporal variations Water-rock interactions
Research on the Strategy for Improving Cultivated Land Quality in China
Hongqi Zhang, Minghong Tan, Xiangbin Kong, Yongmei Xu, Erqi Xu, Erping Shang
Strategic Study of CAE 2018, Volume 20, Issue 5, Pages 16-22 doi: 10.15302/J-SSCAE-2018.05.003
Based on a systematic analysis of changes in quantity and quality of cultivated land in China, this paper put forward an overall strategic thinking of realizing three strategic transformations in the cultivated land management from the aspects of quantity, quality, and ecology of the cultivated land. Five important measures, including enhancing the cultivated land quantity in China, curbing undisciplined growth of construction land, improving the fertility of cultivated soil, preventing and controlling heavy metal pollution of soil, and preventing and controlling agricultural film pollution, were proposed. It was also recommended that four major projects, namely middle- and low-yield farmland reforms, comprehensive improvement of rural land, comprehensive reparation of heavy metal pollution of soil, and soil and water conservation, sand prevention, and saline soil improvement, should be implemented as soon as possible.
Keywords: cultivated land quality temporal and spatial change strategy major projects
Lin LUO, Zhongjing WANG
Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 5, Pages 756-768 doi: 10.1007/s11783-013-0563-7
Keywords: precipitation intensity Mann-Kendall rank statistic spatial and temporal distribution climatic change
Xiaodong Xie, Qi Ying, Hongliang Zhang, Jianlin Hu,
Engineering 2023, Volume 28, Issue 9, Pages 117-129 doi: 10.1016/j.eng.2022.03.013
The aging timescale of particles is a key parameter in determining their impacts on air quality, human health, and climate. In this study, a one-year simulation of the age distributions of the primary and secondary inorganic fine particulate matter (PM2.5) components was conducted over China using an age-resolved Community Multiscale Air Quality (CMAQ) model. The results indicate that primary PM2.5 (PPM) and ammonium mainly originate from fresh local emissions, with approximately 60%–80% concentrated in 0–24 h age bins in most of China throughout the year. The average age is 15–25 h in most regions in summer, but increases to 40–50 h in southern region of China and the Sichuan Basin (SCB) in winter. Sulfate is more aged than PPM, indicating an enhanced contribution from regional transport. Aged sulfate with atmospheric age > 48 h account for 30%–50% of total sulfate in most regions and seasons, and the concentrations in the > 96 h age bin can reach up to 15 µg·m−3 in SCB during winter. Dramatic seasonal variations occur in the Yangtze River Delta, Pearl River Delta, and SCB, with highest average age of 60–70 h in winter and lowest of 40–45 h in summer. The average age of nitrate is 20–30 h in summer and increases to 40–50 h in winter. The enhanced deposition rate of nitric acid vapor combined with the faster chemical reaction rate of nitrogen oxides leads to a lower atmospheric age in summer. Additionally, on pollution days, the contributions of old age bins (> 24 h) increase notably for both PPM and secondary inorganic aerosols in most cities and seasons, suggesting that regional transport plays a vital role during haze events. The age information of PM2.5, provided by the age-resolved CMAQ model, can help policymakers design effective emergent emission control measures to eliminate severe haze episodes.
Keywords: Atmospheric age PM2.5 CMAQ model Control strategy
Zaobao LIU; Yongchen WANG; Long LI; Xingli FANG; Junze WANG
Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 4, Pages 401-413 doi: 10.1007/s11709-022-0823-3
Keywords: hard rock tunnel tunnel bore machine advance rate prediction temporal convolutional networks soft
Title Author Date Type Operation
Industrial eco-efficiency and its spatial-temporal differentiation in China
Wei YANG, Fengjun JIN, Chengjin WANG, Chen LV
Journal Article
Assessment of temporal and spatial variations in water quality using multivariate statistical methods
Xue LI,Pengjing LI,Dong WANG,Yuqiu WANG
Journal Article
A Spatial–Temporal Network Perspective for the Propagation Dynamics of Air Traffic Delays
Qing Cai, Sameer Alam, Vu N. Duong
Journal Article
Temporal and spatial stability of the EM/PM molecular subtypes in adult diffuse glioma
Journal Article
Allocation of grassland, livestock and arable based on the spatial and temporal analysis for food demand
Huilong LIN, Ruichao LI, Yifan LIU, Jingrong ZHANG, Jizhou REN
Journal Article
Trends of environmental accidents and impact factors in China
Pengli XUE, Weihua ZENG
Journal Article
A Precision-Positioning Method for a High-Acceleration Low-Load Mechanism Based on Optimal Spatial andTemporal Distribution of Inertial Energy
Xin Chen,Youdun Bai,Zhijun Yang,Jian Gao,Gongfa Chen
Journal Article
A Temporal–Spatial Atlas of Peripheral Nerve Evoked Cortex Potential in Rat: A Novel Testbed to Explore
Xiaofeng Yin, Jiuxu Deng, Bo Chen, Bo Jin, Xinyi Gu, Zhidan Qi, Kunpeng Leng, Baoguo Jiang
Journal Article
Using hydrochemical signatures to characterize the long-period evolution of groundwater information in the Dagu River Basin, China
Journal Article
Research on the Strategy for Improving Cultivated Land Quality in China
Hongqi Zhang, Minghong Tan, Xiangbin Kong, Yongmei Xu, Erqi Xu, Erping Shang
Journal Article
Changes in hourly precipitation may explain the sharp reduction of discharge in the middle reach of the Yellow River after 2000
Lin LUO, Zhongjing WANG
Journal Article
Spatial and Temporal Variations in the Atmospheric Age Distribution of Primary and Secondary Inorganic
Xiaodong Xie, Qi Ying, Hongliang Zhang, Jianlin Hu,
Journal Article