نتایج جستجو برای: expanding urbanization

تعداد نتایج: 61216  

2016
Aurélien Kaiser Thomas Merckx Hans Van Dyck

Climate alteration is one of the most cited ecological consequences of urbanization. However, the magnitude of this impact is likely to vary with spatial scale. We investigated how this alteration affects the biological fitness of insects, which are especially sensitive to ambient conditions and well-suited organisms to study urbanization-related changes in phenotypic traits. We monitored tempe...

Journal: :Remote Sensing 2013
Qian Zhang Karen C. Seto

The world is rapidly urbanizing, but there is no single urbanization process. Rather, urban areas in different regions of the world are undergoing myriad types of transformation processes. The purpose of this paper is to examine how well data from DMSP/OLS nighttime lights (NTL) can identify different types of urbanization processes. Although data from DMSP/OLS NTL are increasingly used for the...

Journal: :Remote Sensing 2015
Yanxu Liu Yanglin Wang Jian Peng Yueyue Du Xianfeng Liu Shuangshuang Li Donghai Zhang

Changes in biodiversity owing to vegetation degradation resulting from widespread urbanization demands serious attention. However, the connection between vegetation degradation and urbanization appears to be complex and nonlinear, and deserves a series of long-term observations. On the basis of the Normalized Difference Vegetation Index (NDVI) and the image’s digital number (DN) in nighttime st...

2014
Kunpeng Yi Hiroshi Tani Qiang Li Jiquan Zhang Meng Guo Yulong Bao Xiufeng Wang Jing Li

In this paper, an Urban Light Index (ULI) is constructed to facilitate analysis and quantitative evaluation of the process of urbanization and expansion rate by using DMSP/OLS Nighttime Light Data during the years from 1992 to 2010. A unit circle urbanization evaluation model is established to perform a comprehensive analysis of the urbanization process of 34 prefecture-level cities in Northeas...

2013
Xiaofei Li Raymond J.G.M. Florax Brigitte S. Waldorf

The study investigates the role of agriculture in the process of urbanization. According to Matsuyama (1992), the relationship between agricultural productivity and urbanization depends on the economic openness. In closed economies the relation is positive while for open economies it is negative. This paper empirically tests the role of agricultural productivity on a country’s level of urbaniza...

2008
Kimberly M. Andrews

Roads are the ultimate manifestation of urbanization, providing essential connectivity within and between rural and heavily populated areas. Roads permeate national forests and other established wilderness areas; consequently, no areas in the U.S. are protected from this expanding infrastructure. The ecological impacts roads have on herpetofauna across temporal and spatial scales are profound, ...

2013
Sara A. Gagné

The urban transformation of the planet has spurred interest across a wide variety of disciplines in the fundamental changes to human society and the environment that result from urbanization. Landscape ecology is no exception. Since the late 1980s, the number of papers devoted to the study of the ecology of urban landscapes has risen dramatically. This trend prompted the question I address in t...

2017
Paul Jones

Sustainable urbanization policies and strategies are posited as a major tool by which to achieve the sustainable development of growing towns and cities. A major challenge for sustainable urbanization policies and strategies is how to address the complexity of urbanization, especially the ongoing growth of informal settlements and slums in developing countries. It is acknowledged that those liv...

2014
Xuchao Yang Wenze Yue Honghui Xu Jingsheng Wu Yue He

Since reforms carried out in the late 1970s, China has experienced unprecedented rates of urban growth. Remote sensing data and surface observational data are used to investigate the urbanization process and related environmental consequences, focusing on extreme heat events and air pollution, in Zhejiang Province (ZJP, East China). Examination of satellite-measured nighttime light data indicat...

2015
Chao Bao Dongmei He Vincenzo Torretta

The relationship between urbanization, economic growth, and water use change is one of the key issues for China’s sustainable development, as rapid urbanization and continuous economic growth are accompanied by a steady water stress. Thus, we applied a cointegration test and a VECM (vector error correction model) Granger causality test to investigate the causal relationship between the urbaniza...

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