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تغییرات مخزن کربن آلی خاک در حاشیههای مرزی جنگل- شالیزار (پژوهش موردی: پارک جنگلی شهرستان نور) | ||
| تحقیقات جنگل و صنوبر ایران | ||
| مقاله 10، دوره 23، شماره 1، فروردین 1394، صفحه 104-116 اصل مقاله (250.91 K) | ||
| نوع مقاله: علمی- پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijfpr.2015.102367 | ||
| نویسندگان | ||
| علی اصغر واحدی* 1؛ علیرضا بیژنی نژاد2 | ||
| 1دکتری جنگلداری، مؤسسه تحقیقات جنگلها و مراتع کشور، | ||
| 2کارشناس ارشد جنگلداری، دانشگاه آزاد اسلامی چالوس | ||
| چکیده | ||
| ذخایر مخزن کربن آلی خاک جنگل نقش مهمی در رابطه با کاهش اثرات تغییر پارامترهای اقلیمی و مقدار تولیدات زیتودههای گیاهی ایفا میکند و تبدیل کاربری اراضی جنگلی سبب هدررفت این ذخایر میشود. در پژوهش پیشرو روند تغییرات ذخایر مخزن کربن آلی خاک از داخل جنگل به سمت داخل شالیزار مجاور آن بررسی شد. دو بخش 10 هکتاری مجزا در پارک جنگلی نور با تیپ پوشش گیاهی مشابه (پلت- انجیلی) در مجاورت زمینهای کشاورزی برای انجام مطالعه انتخاب شد. برای نمونهبرداری خاک (صفر تا 20 سانتیمتر و 20 تا 40 سانتیمتر)، در فصل غیررویش ابتدا یک ترانسکت عمودی از حاشیه مرزی جنگل به فاصله صفر تا 10، 30 تا 40، 70 تا 80 و 100 تا 110 متر به سمت داخل جنگل و صفر تا 10 متر به سمت داخل شالیزار جانمایی شد. بهمنظور کاهش تغییرات نمونهبرداری خاک در داخل جنگل، کلیه نمونهبرداریها با سه تکرار در اطراف درختان غالب توده که حداقل 10 متر از یکدیگر فاصله داشتند، انجام شد. در هر یک از فواصل مذکور در فصل رویش، شدت نور با استفاده از دستگاه فتومتر در یک فاصله ثابت از سطح زمین بر حسب ولت بر مترمربع اندازهگیری شد. نتایج حاصل از آزمون t جفتی نشان داد که موجودی کربن عمق فوقانی خاک چه در جنگل و چه در شالیزار دارای مقادیر بیشتری نسبت به عمق تحتانی خاک میباشند. با توجه به نتایج تجزیهواریانس یکطرفه، ذخایر مخزن کربن آلی خاک در عمقهای مختلف در فواصل مختلف داخل جنگل تغییرات معنیداری نداشتند. جالب توجه بود که بین ذخایر کربن آلی اعماق مختلف خاک شالیزار و جنگل اختلاف معنیداری وجود نداشت. از طرفی نتایج آزمون همبستگی پیرسون نشان داد که فقط بین ذخایر کربن آلی سطوح فوقانی خاکهای اراضی جنگلی، شالیزار و شدت نور دریافتی رابطه وارونه وجود دارد (0/37- = r). | ||
| کلیدواژهها | ||
| پلت؛ ترسیب کربن؛ خاک غرقابی؛ شدت نور؛ مرز جنگل- شالیزار | ||
| عنوان مقاله [English] | ||
| Variation within soil organic carbon pool in the forest-paddy field edges (Case study: Nour Forest Park) | ||
| نویسندگان [English] | ||
| Ali Asghar Vahedi1؛ Alireza Bijani-nejad2 | ||
| 1Ph.D. Forestry, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran | ||
| 2M.Sc. Forestry, Islamic Azad University of Chalus, Chalus, Iran | ||
| چکیده [English] | ||
| Soil organic carbon pools (SOCP) in forests play important roles in terms of biomass productivity level as well as mitigating the climate change effects. Land-use changes cause a potential loss of SOCPs in the forest. Hence, variation of SOCPs around the forest-paddy field transition zone in northern Iran was the main aim of this study. The study was conducted within the natural forest park forest of Nour in Mazandaran province, in which the weak drainage and long periods of soil waterlogging during the rainy season are considered as crucial threats. In two remnant forest fragments with similar stand type (Maple-Ironwood), extend (10 ha) and location (adjacent to the paddy fields), soil samples were collected from two depths of 0- 20 and 20-40 cm at five distances from the farm edge into the inner forest (10 m in the paddy field and 0–10, 30–40, 70–80 and 100–110 m towards the forest interior). All the samples were collected near to the dominant Acer velutinum trees, with a minimum distance of 10 m to each other. In addition, light intensity was measured based on v per m2 in the growing season by photo-light meter measuring device in constant vertical distance from the ground. The result of paired t-test showed significantly higher carbon budget in upper soil depth compared to the lower depth in both forest and paddy fields (P < 0.01). The result of one-way ANOVA indicated no significant differences among different distances to the forest stands (P>0.05). Surprisingly we observed no significant difference between the SOCPs in forest and paddy field. Besides, a significant inverse Pearson’s correlation between light intensity and SOCP was only observed for the upper soil depth in forest and paddy field (r=-0.37, P < 0.05). | ||
| کلیدواژهها [English] | ||
| Acer velutinum, Carbon sequestration, soil water logging, Light intensity, forest-paddy field transition | ||
| مراجع | ||
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- Bakhshi, H., Namiranian, M., Makhdoom, M. and Zahedi, Gh., 2013. Application of fuzzy modeling to assess the impacts of recreation on bulk density as a physical factor (Case study: Nour forest park). Iranian Journal of Forest, 5: 11-19 (In Persian). - Chung, S.O., Jung, K.Y. and Sudduth, K.A., 2011. Estimation of Korean paddy field soil properties using optical reflectance. Journal of Biosystems Engineering, 36(1): 33-39. - Davidson, E.A. and Ackerman, I.L., 1993. Changes in soil carbon inventories following cultivation of previously untilled soils. Biogeochemistry, 20: 161-193. - De Deyn, G.B., Cornelissen, J.H.C., Bardgett, R.D., 2008. Plant functional traits and soil carbon sequestration in contrasting biomes. Ecology Letters, 11: 516-531. - DeGryze, S., Six, J., Paustian, K., Morris, S.J., Paul, E.A. and Merckx, R., 2004. Soil organic carbon pool changes following land-use conversions. Global Change Biology, 10: 1120-1132. - Fernández-Valiente, E. and Quesada, A., 2004. A shallow water ecosystem: rice-fields. The relevance of cyanobacteria in the ecosystem. Limnetica, 23: 95-108. - Hedde, M., Aubert, M., Decaens, T. and Bureau, F., 2008. Dynamics of soil carbon in a beechwood chronosequence forest. Forest Ecology and Management, 255: 193-202. - Hollingsworth, T.N., Schuur, E.A.G., Schuur, F.S. and Walker, M.D., 2008. Plant Community Composition as a Predictor of Regional Soil Carbon Storage in Alaskan Boreal Black Spruce Ecosystems. Ecosystems, 4: 629-642. - Ingram, J.S.I. and Fernandes, E.C.M., 2001. Managing Carbon sequestration in soils: concepts and terminology. Agriculture, Ecosystems and Environment, 87: 111-117. - Jandl, R., Lindner, M., Vesterdal, L., Bauwens, B., Baritz, R., Hagedorn, F., Johnson, D.W., Minkkinen, K., and Byrne, K.A., 2007. How strongly can forest management influence soil carbon sequestration? Geoderma, 137: 253-268. - Jime´nez, J.J., Lal, R., Leblanc, H.A. and Russo, R.O., 2007. Soil organic carbon pool under native tree plantations in the Caribbean lowlands of Costa Rica. Forest Ecology and Management, 241: 134-144. - Johnson, D., Knoepp, J., Swank, W., Shan, J., Morris, L., van Lear, D. and Kapeluck, P., 2002. Effects of forest management on soil carbon: results of some long-term resampling studies. Environmental Pollution, 116: 201-208. - Kirby, K.R. and Potvin, C., 2007. Variation in carbon storage among tree species: Implications for the management of a small-scale carbon sink project. Forest Ecology and Management, 246: 208-221. - Lal, R., 2005. Forest soils and carbon sequestration. Forest Ecology and Management, 220: 242-258. - Mahmoudi Taleghani, E., Zahedi Amiri, Gh., Adeli, E. and Sagheb-Talebi, Kh., 2007. Assessment of carbon sequestration in soil layers of managed forest. Iranian Journal of Forest and Poplar Research, 15(3): 241-252 (In Persian). - Manrique, S., Franco, J., Nunez, V. and Seghezzo, L., 2011. Potential of native forests for the mitigation of greenhouse gases in Salta, Argentina. Biomass and Bioenergy, 35: 2184-2193. - McCarl, B.A., Metting, F.B. and Rice, C., 2007. Soil carbon sequestration. Climatic Change, 80: 1-3. - Nave, L.E., Vance, E.D., Swanston, C.W. and Curtis, P.S., 2010. Harvest impacts on soil carbon storage in temperate forests. Forest Ecology and Management, 259: 857-866. - Niknahad Gharmakher, H. and Maramaei, M., 2011. Effects of land use changes on soil properties (Case Study: the Kechik catchment). Journal of Soil Management and Sustainable Production, 2: 81-96. - Peichl, M. and Arain, M.A., 2006. Above- and belowground ecosystem biomass and carbon pools in an age-sequence of temperate pine plantation forests. Agricultural and Forest Meteorology, 140: 51-63. - Post, W.M. and Kwon, K.C., 2000. Soil carbon sequestration and land-use change: processes and potential. Global Change Biology, 6: 317-328. - Rodrıguez-Loinaz, G., Onaindia, M., Amezaga, I., Mijangos, I. and Garbisu, C., 2008. Relationship between vegetation diversity and soil functional diversity in native mixed-oak forests Soil. Biology & Biochemistry, 40: 49-60. - Rouhi-Moghaddam, E., Hosseini, S.M., Ebrahimi, E., Tabari, M. and Rahmani, A., 2008. Comparison of growth, nutrition and soil properties of pure stands of Quercus castaneifolia and mixed with Zelkova carpinifolia in the Hyrcanian forests of Iran. Forest Ecology and Management, 255: 1149-1160. - Rubio, A., Gavilan, R.G., Montes, F., Gutiérrez-Giron, A., Daz-Pines, E. T. and Mezquida, E., 2011. Biodiversity measures applied to stand-level management: Can they really be useful? Ecological Indicators, 11: 545-556. - Rustad, L.E., 2006. From transient to steady-state response of ecosystems to atmospheric CO2-enrichment and global climate change: conceptual challenges and need for an integrated approach. Plant Ecology, 182: 43-62. - Schlesinger, W.H., 1990. Evidence from chronosequence studies for a low carbon storage potential of soils. Nature, 348: 232-234. - Toledo-Aceves, T. and Garcıa-Oliva, F., 2008. Effects of forest-pasture edge on C, N and P associated with Caesalpinia eriostachys, a dominant tree species in a tropical deciduous forest in Mexico. Ecological Research, 23: 271-280. - Vahedi, A.A., 2012. Relationship between plants diversity and carbon sequestration in the Hyrcanian forests of Iran (Case study: protected region in the third district of Glandrud-Nour). Ph.D. thesis, Science and Research Branch, Islamic Azad University, Tehran, Iran, 127p (In Persian).
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