نتایج جستجو برای: human induced deforestation

تعداد نتایج: 2436176  

2015
Adriana Gomez Coen Bussink Thomas Bauer Steffen Fritz Antonio Escobar Mykola Gusti Linda See Clement Atzberger

Fires in forest areas are considered an important threat to the Andean Region and the Amazon rainforest. In Colombia, fire is used to expand the agricultural frontier (including illicit crops) which results in deforestation. Given the importance of avoiding deforestation and to control coca expansion, this paper aims to: 1) understand the relationship between fires and deforestation, coca and d...

Journal: :The Science of the total environment 2006
N Mainville J Webb M Lucotte R Davidson O Betancourt E Cueva D Mergler

Soil erosion and degradation provoked by deforestation in the Amazon is a global concern, and recent studies propose a link between deforestation, soil erosion and the leaching of naturally occurring mercury (Hg). In the Ecuadorian Amazon, elevated deforestation rates and the proximity of volcanoes could play an important role in soil fertility and soil Hg levels. The goal of this study is to e...

2016
Kimberly M. Fornace Tommy Rowel Abidin Neal Alexander Paddy Brock Matthew J. Grigg Amanda Murphy Timothy William Jayaram Menon Chris J. Drakeley Jonathan Cox

The zoonotic malaria species Plasmodium knowlesi has become the main cause of human malaria in Malaysian Borneo. Deforestation and associated environmental and population changes have been hypothesized as main drivers of this apparent emergence. We gathered village-level data for P. knowlesi incidence for the districts of Kudat and Kota Marudu in Sabah state, Malaysia, for 2008-2012. We adjuste...

2016
Fabian Hess

Date: 14.03.2016 Supervisor: Snell Rebecca Introduction Although natural habitat destruction through deforestation is widely recognized as one of the major reasons for the loss of biodiversity in the tropics, the lack of quantitative data concerning both the changes in biodiversity and the drivers behind this change makes it difficult to assess the real extent of decline in biodiversity due to ...

2016
Lilik B. Prasetyo Chandra Irawadi Wijaya Yudi Setiawan

Java is very densely populated since it is inhabited by more than 60% of the total population of Indonesia. Based on data from the Ministry of Forestry, forest loss between 2000-2005 in Java was about 800,000 hectares. Regardless of the debate on whether the different methodologies of forest inventory applied in 2005 have resulted in an underestimation of the figure of forest loss or not, the d...

2017
Weiwei Liu Fei Lu Yunjian Luo Wenjing Bo Lingqiao Kong Lu Zhang Bojie Liu Zhiyun Ouyang Xiaoke Wang

Global carbon cycles are impacted by human activity primarily via fossil fuel combustion and forest carbon budget alterations. In this study, the temporal dynamics and spatial distribution of forest biomass carbon (FBC) stock and density in China were analyzed to assess the large-scale effects of humans on FBC. The results indicated that from 1977 to 2013, the FBC stock increased by 62.9%, from...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2013
Ruth DeFries Martin Herold Louis Verchot Marcia N Macedo Yosio Shimabukuro

The Brazilian state of Mato Grosso was a global deforestation hotspot in the early 2000s. Deforested land is used predominantly to produce meat for distal consumption either through cattle ranching or soya bean for livestock feed. Deforestation declined dramatically in the latter part of the decade through a combination of market forces, policies, enforcement and improved monitoring. This study...

Journal: :PloS one 2015
María Fernanda Tapia-Armijos Jürgen Homeier Carlos Iván Espinosa Christoph Leuschner Marcelino de la Cruz

Deforestation and fragmentation are major components of global change; both are contributing to the rapid loss of tropical forest area with important implications for ecosystem functioning and biodiversity conservation. The forests of South Ecuador are a biological 'hotspot' due to their high diversity and endemism levels. We examined the deforestation and fragmentation patterns in this area of...

2015
Jan Börner Krisztina Kis-Katos Jorge Hargrave Konstantin König

Regulatory enforcement of forest conservation laws is often dismissed as an ineffective approach to reducing tropical forest loss. Yet, effective enforcement is often a precondition for alternative conservation measures, such as payments for environmental services, to achieve desired outcomes. Fair and efficient policies to reducing emissions from deforestation and forest degradation (REDD) wil...

2017
Mariana Vedoveto

Deforestation trends in the Brazilian Amazon have been increasingly linked to globalized markets for beef, timber, soybean, and other commodities. In recent years there has been a remarkable proliferation of deforestation-free agreements to pressure corporations to adopt more environmentally responsible practices around the world. The Brazilian Soy Moratorium (SoyM), the first voluntary defores...

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