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ارزش زیست محیطی کربن ذخیرهشده در خاک عرصههای مختلف پخشسیلاب دشت گربایگان فسا | ||
| پژوهش های آبخیزداری | ||
| مقاله 5، دوره 32، شماره 1 - شماره پیاپی 122، فروردین 1398، صفحه 31-41 اصل مقاله (597.32 K) | ||
| نوع مقاله: پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/wmej.2018.122551.1129 | ||
| نویسندگان | ||
| محمد جواد روستا* 1؛ کوکب عنایتی2؛ سید مسعود سلیمان پور3؛ سید حمید مصباح4 | ||
| 1دانشیار بخش تحقیقات حفاظت خاک و آبخیزداری، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان فارس، سازمان تحقیقات، آموزش و ترویج کشاورزی، شیراز، ایران | ||
| 2کارشناسارشد بخش تحقیقات حفاظت خاک و آبخیزداری، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان فارس، سازمان تحقیقات، آموزش و ترویج کشاورزی، شیراز، ایران | ||
| 3استادیار بخش تحقیقات حفاظت خاک و آبخیزداری، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان فارس، سازمان تحقیقات، آموزش و ترویج کشاورزی، شیراز، ایران | ||
| 4مربی بخش تحقیقات حفاظت خاک و آبخیزداری، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان فارس، سازمان تحقیقات، آموزش و ترویج کشاورزی، شیراز، ایران | ||
| چکیده | ||
| ذخیره کردن کربن در عرصههای طبیعی روشی سازگار با اصول توسعهی پایدار و یکی از راهکارهای شناختهشده برای کاهش کربن جوی و اصلاح وضع موجود آبوهوایی است .برای مشخصشدن نقش آبخوانداری در کاهش میزان دیاکسیدکربن هوا و ذخیرهی آن بهصورت کربنآلی، در هر نوار از شبکههای پخشسیلاب، در آبان سال 1396 سه نمونه خاک از ابتدا، وسط و انتهای هر نوار از عمق 30-0 سانتی متر تهیه شد. سه نمونهی تصادفی شاهد نیز برداشته شد و میزان کربنآلی نمونهها (36 نمونه) اندازهگیری و میزان ترسیب کربن محاسبه شد. دادههای بهدستآمده با طرح آماری بلوکهای کاملتصادفی تحلیل و میانگینها با آزمون دانکن در تراز 5% مقایسه شد. نتایج تحلیل واریانس دادهها نشان داد که پخشسیلاب در کاربریهای مختلف بر درصد کربنآلی و میزان ترسیبکربن در خاک در تراز 1% معنیدار شد. نتایج مقایسهی میانگینها در کاربری جنگل متراکم اوکالیپتوس همراه با پخشسیلاب در مقایسه با شاهد، نشان داد که بیشترین مقدار کربن 44/2 تن در هکتار، یعنی معادل 162/2 تن گاز دیاکسیدکربن هوا در خاک ترسیب شده است، در صورتیکه در کاربری شاهد (مرتع بی پخشسیلاب)، مقدار ترسیب کربن 6/07 تن در هکتار کربن تعیین شد. با توجه به گذشت 35 سال از اجرای برنامهی پخشسیلاب در این عرصهها، هر هکتار از عرصهی جنگل متراکم اوکالیپتوس بهطور متوسط سالانه 4/6 تن گاز دیاکسیدکربن را بهصورت مادهی آلی در خاک ترسیب کرده و نقش مهمی در کاهش آلودگی هوا ایفا نموده است. ارزش اقتصادی-زیستمحیطی کل کربن ترسیبشده در خاک عرصههای جنگل متراکم اوکالیپتوس 1/36 میلیارد ریال در هکتار با میانگین 38/85 میلیون ریال در هکتار در سال است. | ||
| کلیدواژهها | ||
| ایستگاه کوثر؛ پخشسیلاب؛ ترسیبکربن؛ فارس | ||
| عنوان مقاله [English] | ||
| The Environmental Value of Stored Carbon in the Soil of Floodwater Spreading Fields of Gareh-Bygon Plain, Fasa, Iran | ||
| نویسندگان [English] | ||
| Mohammad Javad Rousta1؛ Kowkab Enayati2؛ Seyed Masoud Soleimanpour3؛ Seyed Hamid Mesbah4 | ||
| 1Associate Professor, Soil Conservation and Watershed Management Research Department, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Shiraz, Iran | ||
| 2M.Sc., Soil Conservation and Watershed Management Research Department, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Shiraz, Iran | ||
| 3Assistant professor, Soil Conservation and Watershed Management Research Department, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Shiraz, Iran | ||
| 4Research Educator, Soil Conservation and Watershed Management Research Department, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Shiraz, Iran | ||
| چکیده [English] | ||
| Carbon sequestration (CS) in soils is a phenomenon consistent with the principles of sustainable development. Further, it is a vital solution for reducing the atmospheric CO2 and other GHGs. To identify the role of spate irrigation (SI) of afforested plots and rangeland in CS, 36 soil samples were collected from the 0–30 cm top soil in different spate-irrigated and control treatments in November 2017. Organic carbon (OC) was measured by the standard laboratory procedures, and then converted to the sequestered soil carbon (SOC). The data were analyzed using the randomized complete block design benefitting from the SAS software. The means were compared with the Duncan test at P2; this amounts to 4.6 tons of CO2 per year on average.The total income from the carbon rent of the dense Eucalyptus camaldulensis Dehnh. aforested plots at the Kowsar Station is $32381.00 per hectare with an annual mean of $925.17 per hectare. | ||
| کلیدواژهها [English] | ||
| Carbon sequestration, Fars, Flood spreading, Kowsar Station | ||
| مراجع | ||
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