scholarly journals Land use and land cover change based on historical space-time model

2016 ◽  
Author(s):  
Qiong Sun ◽  
Chi Zhang ◽  
Min Liu ◽  
Yongjing Zhang

Abstract. Land use and cover change is a leading edge topic in the current research field of global environmental changes and case study of typical areas is an important approach understanding global environmental changes. Taking Qiantang River (Zhejiang, China) as an example, this study explores automatic classification of land use using remote sensing technology and analyzes historical space-time change by remote sensing monitoring, which provide new methods for optimizing land use structure and realize the optimal allocation of land resources as well as intensive utilization. It is of great importance to the sustainable development of Qiantang River basin and the whole Zhejiang province. This study combines spectral angle mapping (SAM) with multi-source information and creates a convenient and efficient high precision land use computer automatic classification method which meets the application requirements and is suitable for complex landform of the studied area. This work analyzes the histological space-time characteristic of land use and cover change in 2001, 2007 and 2014, providing a strong information support and new research method for optimizing Qiantang River land use structure and achieving optimal allocation of land resources and scientific management.

Solid Earth ◽  
2016 ◽  
Vol 7 (5) ◽  
pp. 1395-1403 ◽  
Author(s):  
Qiong Sun ◽  
Chi Zhang ◽  
Min Liu ◽  
Yongjing Zhang

Abstract. Land use and cover change is a leading edge topic in the current research field of global environmental changes and case study of typical areas is an important approach understanding global environmental changes. Taking the Qiantang River (Zhejiang, China) as an example, this study explores automatic classification of land use using remote sensing technology and analyzes historical space–time change by remote sensing monitoring. This study combines spectral angle mapping (SAM) with multi-source information and creates a convenient and efficient high-precision land use computer automatic classification method which meets the application requirements and is suitable for complex landform of the studied area. This work analyzes the histological space–time characteristics of land use and cover change in the Qiantang River basin in 2001, 2007 and 2014, in order to (i) verify the feasibility of studying land use change with remote sensing technology, (ii) accurately understand the change of land use and cover as well as historical space–time evolution trend, (iii) provide a realistic basis for the sustainable development of the Qiantang River basin and (iv) provide a strong information support and new research method for optimizing the Qiantang River land use structure and achieving optimal allocation of land resources and scientific management.


2015 ◽  
Vol 747 ◽  
pp. 306-309 ◽  
Author(s):  
Norizawati Mohd Ayob ◽  
Norhasimah Ismail ◽  
Tarmiji Masron

Land use changes are a key driver in global environmental changes and had a significant impact on the climate at all scales. Various human activities that took place thousands of years ago have an impact on the earth's surface. Today, with the limited supply and high demand, land use crisis became a big issue for the most countries. Changes in land use are not actually only providing a history of the area, but it also describes the way of life of its local communities. In the interdisciplinary research for land use study, cultural values, knowledge and perceptions of knowledge has been recognized as a major factor in determining the adopted approach applied in land use management in that area. Therefore, this paper tries to evaluate the role and potential of the integration of TLEK and GIS in mapping the series of changes in land use.Keyword: Local knowledge, TLEK, land use mapping & conceptual framework


2011 ◽  
Vol 21 (6) ◽  
pp. 1887-1894 ◽  
Author(s):  
Jeffrey S. Dukes ◽  
Nona R. Chiariello ◽  
Scott R. Loarie ◽  
Christopher B. Field

Author(s):  
Claude-Hélène Mayer

Wildlife crime has huge consequences regarding global environmental changes to animals, plants and the entire ecosystem. Combatting wildlife crime effectively requires a deep understanding of human–wildlife interactions and an analysis of the influencing factors. Conservation and green criminology are important in reducing wildlife crime, protecting wildlife and the ecosystem and informing policy-makers about best practices and strategies. However, the past years have shown that wildlife crime is not easy to combat and it is argued in this article that there are underlying existential “givens” and culture-specific aspects that need to be investigated to understand why wildlife crime is still on the rise. This theoretical article explores (eco-)existential perspectives, Greening’s four givens and selected African philosophical concepts, aiming to understand the complexities behind the prevalence of wildlife crime within global and African contexts.


2021 ◽  
Vol 22 (1) ◽  
pp. 117-122
Author(s):  
João Vitor Gobis Verges ◽  
Nivea Massaretto Verges

ResumoAs Alterações Ambientais Globais têm se colocado como pauta de inúmeras políticas e condicionantes culturais, econômicas e sociais em diferentes países no Mundo, sendo refletidas nas perspectivas educacionais. Dessa forma, procura-se, com este trabalho, apontar um cenário de concepção e de prática sobre as alterações ambientais globais no escopo do ensino de Geografia na educação profissional e tecnológica. Nesse sentido, o objetivo da pesquisa se assentou em desvelar os seguintes aspectos: 1) mecanismos metodológicos para as aulas desenvolvidas; 2) eixos analíticos sobre as Alterações Ambientais Globais; 3) instrumentos utilizados; 4) referenciais teóricos; 6) papel do livro didático; 7) enfoques formativos dos docentes. Para isto, foi aplicado um questionário a docentes de uma instituição da rede federal de educação profissional e tecnológica no Brasil, denominada Instituto Federal de Educação, Ciência e Tecnologia. O questionário foi empregado para 11 docentes, apresentando interrogações sobre os itens acima enumerados. Obteve-se como resultado que há o predomínio de aulas expositivas e seminários, as análises sobre o tema ocorrem, majoritariamente, pelas mudanças climáticas e desmatamento, as aulas se baseiam em maior parte nos documentários e gráficos, há a prevalência de referenciais teóricos brasileiros, ocorre a constatação ampla de que os livros didáticos são deficitários e mais de 35% dos professores consideram que suas formações não possuem enfoque para o trabalho com as Alterações Ambientais Globais. Palavras-chave: Prática Docente. Meio Ambiente. Didática. AbstractGlobal Environmental Changes have been placed on the agenda of numerous policies, cultural, economic and social conditions in different countries in the world, being reflected in educational perspectives. Thus, this work seeks to point out a scenario of conception and practice on global environmental changes in the scope of teaching Geography in professional and technological education. In this sense, the objective of the research was based on unveiling the following aspects: 1) methodological mechanisms for the developed classes; 2) analytical axes on Global Environmental Changes; 3) instruments used; 4) theoretical references; 6) the textbook role; 7) teachers training approaches. For this, a questionnaire was applied to teachers of an institution of the federal network of professional and technological education in Brazil, called Federal Institute of Education, Science and Technology. The questionnaire was answered by 11 teachers, asking questions about the items listed above. It was obtained as a result that there is a predominance of expository classes and seminars, the analyzes on the subject are mainly due to climate change and deforestation, the classes are mostly based on documentaries and graphics, there is a prevalence of Brazilian theoretical references, it occurs the widespread finding that textbooks are deficient and more than 35% of teachers consider that their training does not have a focus on working with Global Environmental Changes. Keywords: Teacher Practice. Environment. Didactic.


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