نتایج جستجو برای: land fragmentation

تعداد نتایج: 151571  

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2011
Andy Hector David Fowler Ruth Nussbaum Maja Weilenmann Rory P D Walsh

With a focus on the Danum Valley area of Sabah, Malaysian Borneo, this special issue has as its theme the future of tropical rainforests in a changing landscape and climate. The global environmental context to the issue is briefly given before the contents and rationale of the issue are summarized. Most of the papers are based on research carried out as part of the Royal Society South East Asia...

2015
Luca Salvati Ilaria Tombolini Roberta Gemmiti Andrea Colantoni Luigi Perini Marc A. Rosen

Land degradation has expanded in the Mediterranean region as a result of a variety of factors, including economic and population growth, land-use changes and climate variations. The level of land vulnerability to degradation and its growth over time are distributed heterogeneously over space, concentrating on landscapes exposed to high human pressure. The present study investigates the level of...

eynali, jamshid, farahani, hosin, sohrabi vafa, samira,

Lack of an appropriate utilization regarding factor of production namely land and water resources is among the most important agricultural challenges .It is argued that land fragmentation consider as a major obstacle in this regard . In fact, land consolidation is said to be a reasonable and applicable solution. The major objective of this paper is to investigate the impact of land consolida...

Journal: :Environmental management 2005
Douglas J Bruggeman Michael L Jones Frank Lupi Kim T Scribner

We propose a biodiversity credit system for trading endangered species habitat designed to minimize and reverse the negative effects of habitat loss and fragmentation, the leading cause of species endangerment in the United States. Given the increasing demand for land, approaches that explicitly balance economic goals against conservation goals are required. The Endangered Species Act balances ...

2012
Yaolong Zhao Ke Zhang Yingchun Fu Hong Zhang

Monitoring land-use/land-cover change (LULCC) and exploring its mechanisms are important processes in the environmental management of a lake watershed. The purpose of this study was to examine the spatiotemporal pattern of LULCC by using multi landscape metrics in the Lake Dianchi watershed, which is located in the Yunnan-Guizhou Plateau of Southwest China. Landsat images from the years 1974, 1...

2016
Greg R. Guerin Ed Biffin Zdravko Baruch Andrew J. Lowe RunGuo Zang

We aimed to identify regional centres of plant biodiversity in South Australia, a sub-continental land area of 983,482 km2, by mapping a suite of metrics. Broad-brush conservation issues associated with the centres were mapped, specifically climate sensitivity, exposure to habitat fragmentation, introduced species and altered fire regimes. We compiled 727,417 plant species records from plot-bas...

2014
Calum Brown Dave Murray-Rust Jasper van Vliet Shah Jamal Alam Peter H. Verburg Mark D. Rounsevell

The globalisation of trade affects land use, food production and environments around the world. In principle, globalisation can maximise productivity and efficiency if competition prompts specialisation on the basis of productive capacity. In reality, however, such specialisation is often constrained by practical or political barriers, including those intended to ensure national or regional foo...

2015
Torre J. Hovick David K. Dahlgren Monica Papeş R. Dwayne Elmore James C. Pitman Francisco Moreira

The demands of a growing human population dictates that expansion of energy infrastructure, roads, and other development frequently takes place in native rangelands. Particularly, transmission lines and roads commonly divide rural landscapes and increase fragmentation. This has direct and indirect consequences on native wildlife that can be mitigated through thoughtful planning and proactive ap...

2013

As people penetrate the Amazon interior, they build roads and clear large expanses of land. Over time, this process of deforestation creates forest fragments, islands of trees surrounded by a sea of pastures, farmland, and other degraded habitats. Laurance and his colleagues at the Smithsonian Tropical Research Institute are studying what happens to the forests when trees lose ground to agricul...

1990
Richard E. BILSBORROW Alisson F. BARBIERI

This paper draws upon a detailed longitudinal survey of households living on agricultural plots in the northern three provinces of the Ecuadorian Amazon, the principal region of colonization by migrants in Ecuador since the 1970s. Following the discovery of petroleum in 1967 near what has subsequently come to be the provincial capital and largest Amazonian city of Lago Agrio, oil companies buil...

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