نتایج جستجو برای: soil organic carbon stocks

تعداد نتایج: 613072  

2006
A. J. VandenBygaart

VandenBygaart, A. J. and Angers, D. A. 2006. Towards accurate measurements of soil organic carbon stock change in agroecosystems. Can. J. Soil Sci. 86: 465–471. In response to Kyoto Protocol commitments, countries can elect agricultural carbon sinks to offset emissions from other sectors, but they need to verify soil organic carbon (SOC) stock change. We summarize issues we see as barriers to o...

2011
John N Williams Allan D Hollander A Toby O'Geen L Ann Thrupp Robert Hanifin Kerri Steenwerth Glenn McGourty Louise E Jackson

BACKGROUND Quantification of ecosystem services, such as carbon (C) storage, can demonstrate the benefits of managing for both production and habitat conservation in agricultural landscapes. In this study, we evaluated C stocks and woody plant diversity across vineyard blocks and adjoining woodland ecosystems (wildlands) for an organic vineyard in northern California. Carbon was measured in soi...

Journal: :مدیریت خاک و تولید پایدار 0
وحیدرضا جلالی کرمان ابراهیم بابائیان عضو ستاد فناوری آب، فرسایش، خشکسالی و محیط زیست-معاونت علمی فناوری ریاست جمهوری

background and objectives: soil organic carbon is a main soil property and particularly important for development and sustainable management of agricultural systems. soil organic matter content, which is typically measured in the form of soil organic carbon soc content, is commonly regarded as a key indicator of soil quality and utilization (liu et al., 2015). the presence of som has been prove...

2016
Christian Weiss Joanna Weiss Jens Boy Issi Iskandar Robert Mikutta Georg Guggenberger

Mangroves play an important role in carbon sequestration, but soil organic carbon (SOC) stocks differ between marine and estuarine mangroves, suggesting differing processes and drivers of SOC accumulation. Here, we compared undegraded and degraded marine and estuarine mangroves in a regional approach across the Indonesian archipelago for their SOC stocks and evaluated possible drivers imposed b...

2007
Roger M. Gifford R. John Raison Miko U.F. Kirschbaum

We have selected nine topics of particular importance for gaining a better understanding of the inter-relationship between vegetation, the global terrestrial carbon cycle and climate change. Four of these priorities have an Australia-specific focus. In priority order they are: 1) Reduce uncertainty in Australian continental net primary productivity. A primary input to any terrestrial carbon cyc...

ژورنال: علوم آب و خاک 2017

Soil organic matter is the largest source of organic carbon in the soil surface which played an enormous role in restoring balance, environmental sustainability, soil elements and climatic conditions. Organic materials influence physical, chemical and biological properties of soil and thus soil fertility directly and indirectly. The amount, type and composition of organic matter are different i...

2017
Caroline M. Preston Martin Simard Yves Bergeron Guy M. Bernard Roderick E. Wasylishen

Citation: Preston CM, Simard M, Bergeron Y, Bernard GM and Wasylishen RE (2017) Charcoal in Organic Horizon and Surface Mineral Soil in a Boreal Forest Fire Chronosequence of Western Quebec: Stocks, Depth Distribution, Chemical Properties and a Synthesis of Related Studies. Front. Earth Sci. 5:98. doi: 10.3389/feart.2017.00098 Charcoal in Organic Horizon and Surface Mineral Soil in a Boreal For...

Journal: :مرتع و آبخیزداری 0
رویا وزیریان کارشناس ارشد مدیریت بیابان، دانشگاه علوم کشاورزی و منابع طبیعی گرگان حمید رضا عسگری استادیار دانشگاه علوم کشاورزی و منابع طبیعی گرگان مجید اونق استاد دانشگاه علوم کشاورزی و منابع طبیعی گرگان چوقی بایرام کمکی استادیار دانشگاه علوم کشاورزی و منابع طبیعی گرگان

understanding the relationship between soil and plant is essential for reclamation of degraded lands. in order to investigate the relationship between atriplex halimus density with carbon sequestration the rangeland of incheborun was studied. soil samples were collected randomly by auger in the depth of 0-30 cm of the soil profile in three different plant densities (400 stand per hectare) with ...

2014
B. Foereid D. S. Ward J. Lehmann

Soil organic matter (SOM) is the largest store of organic carbon (C) in the biosphere, but the turnover of SOM is still incompletely understood and not well described in global C cycle models. Here we use the Community Land Model (CLM) and compare the output for soil organic C stocks (SOC) to estimates from a global data set. We also modify the assumptions about SOC turnover in two ways: (1) we...

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