Paper Information

Journal:   PLANT AND ECOSYSTEM   FALL 2013 , Volume 9 , Number 36-1 (SUPPLEMENT); Page(s) 65 To 80.
 
Paper:  A COMPARISON OF THE STABLE PHYTOMASS CARBON SEQUESTRATION POTENTIAL IN NATURAL AND ARTIFICIAL RANGELANDS (CASE STUDY: MEYDAN MOUNTAINOUS REGION)
 
Author(s):  MAHMOUDI E.*, MAHDAVI M., JAVADI M.
 
* DEPARTMENT OF NATURAL RESOURCES, NOOR BRANCH, ISLAMIC AZAD UNIVERSITY, NOOR, IRAN
 
Abstract: 

As the most significant greenhouse gas in the atmosphere and the main cause of global warming and climate change in the past century, carbon dioxide should be absorbed and sequestrated from the atmosphere using the possible ways. Biotic carbon sequestration, including the absorption of extra atmospheric carbon by means of phytomass, is the easiest and most inexpensive way to reduce the consequences of climate change. Natural and artificial rangeland ecosystems have a great ability in enhancing the carbon sequestration potential. Artificial rangeland ecosystem (ARE) results from the conversion of low-yield dry farms to hand-planted rangelands. In an attempt to compare the phytomass carbon sequestration potential of the natural and artificial rangelands, the amount of the sequestrated carbon in the aerial and underground parts of two dominant species (i.e. Astragalus hypsogeton and Onobrichis cornuta) in the natural rangeland ecosystem and Medicago sativa species in artificial rangeland ecosystem of Meydan mountainous regions in the highlands of the North of Esfarayen were determined, per area unit. The results of the mean comparison of phytomass carbon sequestration in these two ecosystems, which was carried out using independent t-Test, indicated that at P<0.01 its amount was significantly (i.e. 6.5 times) greater in the artificial ecosystem compared to the natural one. In addition, no significant difference was observed in the average of the total phytomass carbon sequestration, per area unit, between these two ecosystems. The results of the independent t-Test at P<0.05 revealed that establishing an artificial ecosystem in place of an annual dry land cropping ecosystem, not only preserves the basic ecological resources but also increases the stable carbon sequestration from almost 0, per area unit, to the amount observed in the natural rangeland.

 
Keyword(s): CARBON SEQUESTRATION, PHYTOMASS, MEYDAN REGION, NATURAL RANGELAND, ARTIFICIAL RANGELAND
 
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