نتایج جستجو برای: forest degradation

تعداد نتایج: 254568  

Journal: :Int. J. Applied Earth Observation and Geoinformation 2011
Zhihua Shi Lu Li Wei Yin Lei Ai Nu-Fang Fang Yan-Tun Song

Recently there have been reports of forest regrowth occurring in different regions across the world. There is also a growing recognition of the potential beneficial impact that secondary forests may have on the global environment: providing crucial ecosystem services such as soil conservation, stabilization of hydrological cycles, carbon sequestration, and support for forest dependent communiti...

2011
Steffen Kuntz Felicitas von Poncet Thomas Baldauf Daniel Plugge Bernhard Kenter Michael Köhl

Reducing Emissions from Deforestation and Forest Degradation (REDD) is an international effort to create a financial value for the carbon stored in forests, offering incentives for developing countries to reduce emissions from forest and invest in low-carbon paths to sustainable development. Of critical importance is the estimation of carbon stocks in forests and their dynamics. The paper prese...

حسینی, سیده سمیه, حسینی, وحید,

Protection aspects are important in Zagros Forest because degradation and soil erosion is an important problem in this area. Consequently, the responsible organizations use needle-leaf species for forest restoration. The object of this study was investigation effect of exotics needle-leaves plantation on soil quality and compare with natural soil forest in Garan research station in Marivan. In ...

2004
Demel Teketay

Dryland forest resources have great socio-economic and ecological importance in countries of SSA by playing significant roles in livelihood diversification of both rural and urban households, wood and food security, providing animal feed, human health care and environmental conservation. Despite their great importance, these resources have been subjected to severe degradation, owing to several ...

2013
Shiva S Pandey Geoff Cockfield Tek Narayan Maraseni

Identifying major drivers of deforestation and forest degradation has been an important task at the present context of Reducing Emissions from Deforestation and Forest Degradation “REDD+”. At present, many bilateral and multilateral projects are carrying out pilot activities for the REDD+ in developing countries and many Asian countries are being engaged in this process. Asian countries namely ...

2014
Sascha A. Ismail Jaboury Ghazoul Gudasalamani Ravikanth Cheppudira G. Kushalappa Ramanan Uma Shaanker Chris J. Kettle

Tropical agro-forest landscapes are global priority areas for biodiversity conservation. Little is known about the ability of these landscapes to sustain large late successional forest trees upon which much forest biodiversity depends. These landscapes are subject to fragmentation and additional habitat degradation which may limit tree recruitment and thus compromise numerous ecosystem services...

2016
Indah Waty Bong Mary Elizabeth Felker Ahmad Maryudi

Deforestation and forest degradation are complex and dynamic processes that vary from place to place. They are driven by multiple causes. Local communities are, to some extent, driving and also affected by some of these processes. Can their knowledge aid and add to place-specific assessment and monitoring of Deforestation and forest Degradation (DD) drivers? Our research was conducted in seven ...

2017
Alexandra Tyukavina Matthew C. Hansen Peter V. Potapov Stephen V. Stehman Kevin Smith-Rodriguez Chima Okpa Ricardo Aguilar

Deforestation rates in primary humid tropical forests of the Brazilian Legal Amazon (BLA) have declined significantly since the early 2000s. Brazil's national forest monitoring system provides extensive information for the BLA but lacks independent validation and systematic coverage outside of primary forests. We use a sample-based approach to consistently quantify 2000-2013 tree cover loss in ...

Journal: :Journal of environmental quality 2005
Y Zhang K Spokas D Wang

Recent studies have observed enhanced degradation of methyl isothiocyanate (MITC) from repeated fumigation in agricultural soils. Little is known about fumigant degradation in forest and nursery soils. This study was conducted to determine degradation rates of MITC and chloropicrin (CP) in two forest soils and the impacts of nursery management on degradation of MITC and CP. The half-life values...

2011
Douglas C Morton Marcio H Sales Carlos M Souza Bronson Griscom

BACKGROUND Historic carbon emissions are an important foundation for proposed efforts to Reduce Emissions from Deforestation and forest Degradation and enhance forest carbon stocks through conservation and sustainable forest management (REDD+). The level of uncertainty in historic carbon emissions estimates is also critical for REDD+, since high uncertainties could limit climate benefits from c...

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