scholarly journals Impact of rapid urbanization on temporal and spatial pattern change of heavy rainfall in China during the past 60 years

2020 ◽  
Vol 508 ◽  
pp. 012079
Author(s):  
Kong Feng
Keyword(s):  
Spatial Pattern ◽  
Heavy Rainfall ◽  
Rapid Urbanization ◽  
The Past ◽  
Pattern Change ◽  
Temporal And Spatial

scholarly journals Landscape Pattern Change of Impervious Surfaces and Its Driving Forces in Shanghai during 1965–2010

Water ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 1956
Author(s):  
Yang Yao ◽  
Sen Zhang ◽  
Yuqing Shi ◽  
Mengqi Xu ◽  
Jiaquan Zhang ◽  
...  
Keyword(s):  
Water Quality ◽  
Landscape Pattern ◽  
Driving Forces ◽  
Surface Water Quality ◽  
Water Area ◽  
Impervious Surfaces ◽  
Rapid Urbanization ◽  
The Past ◽  
Pattern Change ◽  
Quality Variation

Rapid urbanization influences the landscape pattern of impervious surfaces, and potentially affects surface water quality. Using ArcGIS and Fragstats, this study analyzed the temporal change of the landscape pattern of impervious surfaces in Shanghai over the past 45 years, and its driving forces and impact on water quality were also analyzed. The results show that both low and high impervious surfaces showed different degrees of expansion, and as a result, the pervious surfaces and water area reduced by 40.1% and 13.8%, respectively. It proves that the fragmentation and diversity of impervious surfaces in Shanghai notably increased in the past decades, and especially the low and high impervious surfaces show substantial changes. The primary driving forces of the landscape pattern change are population density, unit area Gross Domestic Product (GDP), and the percentage of primary industry. The result of Redundancy analysis (RDA) is that the explanatory ability of landscape pattern to water quality variations decreased from 68.7% to 46.4% in the period 2000–2010. It should be stressed that the contribution of the configuration of impervious surfaces to water quality variation is less than that of the percentage of impervious surfaces.

What Does Florida Weather during the Past 20 Years Look Like? Florida Weather Represented by the Florida Automated Weather Network (FAWN)

EDIS ◽  
2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Satbyeol Shin ◽  
Young Gu Her ◽  
Geraldina Zhang ◽  
William Lusher
Keyword(s):  
Heavy Rainfall ◽  
Extreme Weather ◽  
Extreme Weather Events ◽  
Tropical Storms ◽  
Biological Engineering ◽  
The Past ◽  
Weather Events ◽  
Spatial Trends ◽  
Temporal And Spatial ◽  
Temporal And Spatial Trends

This 8-page document gives an overview of Florida temperature and rainfall during the past 20 years based on historical FAWN data to provide information about the temporal and spatial trends of Florida weather and the frequency and size of extreme weather events such as heavy rainfall and drought. This document also investigates the characteristics of drought and heavy rainfall in relation to hurricanes and tropical storms. Written by Satbyeol Shin, Young Gu Her, Geraldina Zhang, and William Lusher, and published by the UF/IFAS Department of Agricultural and Biological Engineering, January 2020.https://edis.ifas.ufl.edu/ae537

Research on Optimization of China’s Urban Indemnificatory Housing Supply

2012 ◽  
Vol 479-481 ◽  
pp. 1318-1324
Author(s):  
Zhi Qing Li ◽  
Jin Xin Tian ◽  
Tian Hua Song
Keyword(s):  
Sustainable Development ◽  
Robust Optimization ◽  
Security System ◽  
Uncertain Demand ◽  
Box Constraints ◽  
Housing Provision ◽  
Rapid Urbanization ◽  
The Past ◽  
Housing Security ◽  
Urban Sustainable Development

The contradiction between the effective supply and the uncertain demand in housing security system, which is an important part of the urban social security system, has been a major obstacle to urban sustainable development since 1998, and how to effectively deal with it is becoming more and more important. In this paper, the uncertain demand of indemnificatory housing, which was caused by the rapid urbanization, is considered, and the models for indemnificatory housing provision under box constraints, ellipsoid constraints and polyhedral constraints are constructed respectively by using distributional robust optimization, and at the same time, the reliability of optimal models in theory is proved in the form of theorem. In the end, as application of models, the paper takes Beijing as an example, and conducts empirical research on provision of indemnificatory housing during the past five years (2006-2010), which shows the effectiveness of the method.

Appearance of distinct types of proteoglycan in a well-defined temporal and spatial pattern during early cartilage formation in the chick limb

1984 ◽  
Vol 103 (1) ◽  
pp. 211-220 ◽  
Author(s):  
Tamayuki Shinomura ◽  
Koji Kimata ◽  
Yasuteru Oike ◽  
Nobuaki Maeda ◽  
Shinya Yano ◽  
...  
Keyword(s):  
Spatial Pattern ◽  
Cartilage Formation ◽  
Temporal And Spatial

scholarly journals Stratosphere-troposphere exchange from the Lagrangian perspective: a case study and method sensitivities

2004 ◽  
Vol 4 (3) ◽  
pp. 3249-3284 ◽  
Author(s):  
M. S. Bourqui
Keyword(s):  
Residence Time ◽  
Wave Breaking ◽  
Temporal Evolution ◽  
Baroclinic Wave ◽  
End Effects ◽  
The Past ◽  
Effective Removal ◽  
Residence Time Distributions ◽  
Temporal And Spatial

Abstract. An important part of extra-tropical stratosphere-to-troposphere transport occurs in association with baroclinic wave breaking and cut-off decay at the tropopause. In the last decade many studies have attempted to estimate stratosphere-troposphere exchange (STE) in such synoptic events with various methods, and more recently efforts have been put on inter-comparing these methods. However, large uncertainties remain on the sensitivities to methods intrinsic parameters, and on the best measure for STE with regard to end effects on chemistry. The goal of the present study is to address these two fundamental issues in the context of the application of a trajectory-based Lagrangian method, which has been applied in the past to climatological studies and has also been involved in inter-comparison studies, to a typical baroclinic wave breaking event. The analysis sheds light on (i) the fine mesoscale temporal and spatial structures that are associated with episodic, rapid inflows of stratospheric air into the troposphere; (ii) the spatial resolution of 1°×1° required to reasonably capture STE fluxes in such a wave breaking event; (iii) the effective removal of spurious exchange events using a threshold residence time; (iv) the relevance of residence time distributions for capturing the effective chemical forcing of STE; (v) the large differences in the temporal evolution and geographical distribution of STE fluxes across the 2 and the 4 potential vorticity unit iso-surface definitions of the tropopause.

scholarly journals Brazil, internal migration

2018 ◽  
Author(s):  
Ernesto F. L. Amaral
Keyword(s):  
Internal Migration ◽  
The State ◽  
Fertility Rates ◽  
Rapid Urbanization ◽  
Migration Patterns ◽  
The Past ◽  
Job Opportunities ◽  
Relative Decline ◽  
Demographic Growth ◽  
Concentration Of Industries

Internal migration has been decisive in the process of rapid urbanization that has occurred throughout Brazil in recent decades. The usual explanation for this movement references poverty and the lack of job opportunities in the northeast combined with the concentration of industries in the southeast, mainly in the state of São Paulo. A process of spatial deconcentration has occurred since the 1970s. Internal migration is no longer predominantly a rural-to-urban phenomenon. Demographic growth has decreased in the Brazilian regions, due to diminishing fertility rates and changes in migration patterns. The new migration patterns are characterized by a relative decline in the number of people on the move. The decrease in population flows seems to indicate the disruption of networks between some locations. Current migrants tend to be more qualified than in the past; this characteristic contributes to decentralized development.

scholarly journals The Value of Citizen Science in Increasing Our Knowledge of Under-Sampled Biodiversity: An Overview of Public Documentation of Auchenorrhyncha and the Hoppers of North Carolina

2021 ◽  
Vol 9 ◽  
Author(s):  
Kyle D. Kittelberger ◽  
Solomon V. Hendrix ◽  
Çağan Hakkı Şekercioğlu
Keyword(s):  
North Carolina ◽  
Citizen Science ◽  
Spatial Scales ◽  
The United States ◽  
Undescribed Species ◽  
The Past ◽  
Global Biodiversity ◽  
Temporal And Spatial

Due to the increasing popularity of websites specializing in nature documentation, there has been a surge in the number of people enthusiastic about observing and documenting nature over the past 2 decades. These citizen scientists are recording biodiversity on unprecedented temporal and spatial scales, rendering data of tremendous value to the scientific community. In this study, we investigate the role of citizen science in increasing knowledge of global biodiversity through the examination of notable contributions to the understanding of the insect suborder Auchenorrhyncha, also known as true hoppers, in North America. We have compiled a comprehensive summary of citizen science contributions—published and unpublished—to the understanding of hopper diversity, finding over fifty previously unpublished country and state records as well as dozens of undescribed and potentially undescribed species. We compare citizen science contributions to those published in the literature as well as specimen records in collections in the United States and Canada, illuminating the fact that the copious data afforded by citizen science contributions are underutilized. We also introduce the website Hoppers of North Carolina, a revolutionary new benchmark for tracking hopper diversity, disseminating knowledge from the literature, and incorporating citizen science. Finally, we provide a series of recommendations for both the entomological community and citizen science platforms on how best to approach, utilize, and increase the quality of sightings from the general public.

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