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تأثیر شبیهسازی کاهش بارش بر کربن آلی و کربن زیتوده میکروبی خاک در جنگل مدیریتشده و جنگل دخالتنشده | ||
| تحقیقات جنگل و صنوبر ایران | ||
| مقاله 9، دوره 27، شماره 3 - شماره پیاپی 77، آذر 1398، صفحه 335-348 اصل مقاله (1.15 M) | ||
| نوع مقاله: علمی- پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijfpr.2019.127005.1850 | ||
| نویسندگان | ||
| فاطمه رفیعی* 1؛ هاشم حبشی2؛ رامین رحمانی2 | ||
| 1نویسنده مسئول، دکتری بیولوژی خاک جنگل، دانشکده علوم جنگل، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران | ||
| 2دانشیار، دانشکده علوم جنگل، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران | ||
| چکیده | ||
| کاهش بارش بهعنوان یکی از مهمترین پیامدهای ناشی از پدیده تغییر اقلیم در آینده است. پژوهش پیشرو با هدف بررسی پویایی زمانی کربن آلی و کربن زیتوده میکروبی خاک در شرایط شبیهسازی کاهش بارش در یک توده راش- ممرز مدیریتشده با شیوه تکگزینی و مقایسه آن با یک توده دخالتنشده انجام شد. پس از انتخاب تودههای مذکور در سری یک طرح جنگلداری دکتر بهرامنیا (جنگل شصتکلاته گرگان)، در هریک از آنها، 24 ریزقطعهنمونه در سطوح صفر (شاهد)، 25، 50 و 75 درصد کاهش بارش درنظر گرفته شد. مقایسه الگوی تغییرات زمانی این دو مشخصه مهم خاک بیانگر تغییرپذیری بیشتر بخش میکروبی کربن خاک نسبت به تغییر شرایط محیطی بود. علاوهبر تغییرات زمانی معنیدار که برای کربن زیتوده میکروبی خاک در طول دوره یکساله مشاهده شد، تغییرات در دو بخش روشنه و زیر تاجپوشش نیز متفاوت بود. نتایج این پژوهش بیانگر تأثیر معنیدار کاهش 50 و 75 درصدی بارش بر کربن میکروبی و آلی خاک و تشابه این مشخصه در دو تیمار 25 درصد و شاهد بود. همچنین، در هر دو توده دخالتنشده و مدیریتشده با شیوه تکگزینی، الگوی تغییرات ایجادشده در این مشخصهها در شرایط کنونی و شبیهسازی کاهش بارش، مشابه و بدون اختلاف معنیدار بود. براساس نتایج این پژوهش، در صورت تحقق پیشبینیهای گزارششده درمورد کاهش بارش در شرایط اقلیمی آینده، ادامه طرحهای جنگلداری و عملیات بهرهبرداری بهشیوه گزینشی در توده راش آمیخته به ایجاد تغییرات معنیدار در مقدار و الگوی زمانی کربن آلی و زیتوده میکروبی خاک منجر نخواهد شد. بنابراین، اجرای شیوه گزینشی در مدیریت جنگلهای راش شرقی توصیه میشود. | ||
| کلیدواژهها | ||
| تغییرات زمانی؛ تغییر اقلیم؛ تکگزینی؛ راش شرقی | ||
| عنوان مقاله [English] | ||
| The effect of simulation of rainfall reduction on soil organic carbon and microbial biomass carbon in managed and unmanaged forest | ||
| نویسندگان [English] | ||
| Fatemeh Rafiee1؛ hashem habashi2؛ Ramin Rahmani2 | ||
| 1Corresponding author, Ph.D. of Forest Soil Biology, Faculty of Forest Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran | ||
| 2Associate Prof., Faculty of Forest Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran | ||
| چکیده [English] | ||
| One of the most important consequences of climate change is the anticipated reduction of rainfall in the future. This study aimed to investigate the dynamics of organic carbon and microbial biomass carbon in the simulated condition of the rainfall reduction in the beech-hornbeam managed stands, followed by its comparison with unmanaged stand. Following site selection of district one of Dr. Bahramnia Forest Management Plan (Shastkalate experimental Forest), 24 sub-samples in each stand were considered as the control treatments as well as treatments of 25, 50 and 75 percent decrease in precipitation. A comparison of the temporal variation of these two important soil characteristics indicated that the soil microbial carbon was more variable to changing environmental conditions. In addition to the significant temporal variations of soil microbial biomass carbon, annual changes in the gaps and below-canopy were also different. The results showed that the effects of 50 and 75 percent of precipitation reduction on soil organic and microbial carbon were significantly different from both 25% and control treatments that showed similar conditions. Changes in these markers in the current condition and the decrease shown by simulated rainfall revealed no significant difference and were similar in the control and managed stands with the selection system. Therefore, and provided the decrease of precipitation in future climatic conditions, forestry plans and harvesting operations with selection systems in mixed beech stands would not lead to significant changes in the amount and temporal pattern of soil organic carbon and microbial biomass carbon. Therefore, it is recommended to apply the selection system for the management of the eastern beech forests of Iran. | ||
| کلیدواژهها [English] | ||
| Climate change, oriental beech, selection system, temporal variations | ||
| مراجع | ||
|
- Abrari Vajari, K., 2016. Interactions between canopy gaps created by single-tree selection method and humus layer thickness (Case study: Alandan forest, Sari, Mazandaran province). Iranian Journal of Forest and Poplar Research, 24(3): 541-548. - Arunachalam, A. and Arunachalam, K., 2000. Influence of gap size and soil properties on microbial biomass in a subtropical humid forest of north-east India. Plant and Soil, 223(1-2): 185-193. - Bastida, F., García, C., von Bergen, M., Moreno, J.L., Richnow, H.H. and Jehmlich, N., 2015. Deforestation fosters bacterial diversity and the cyanobacterial community responsible for carbon fixation processes under semiarid climate: a metaproteomics study. Applied Soil Ecology, 93: 65-67. - Bastida, F., López-Mondéjar, R., Baldrianb, P., Andrés-Abellán, M., Jehmlich, N., Torres, I.F., …. and López-Serrano, F.R., 2019. When drought meets forest management: Effects on the soil microbial community of a Holm oak forest ecosystem. Science of The Total Environment, 662: 276-286. - Borken, W., Savage, K., Davidson, E.A. and Trumbore, S.E., 2006. Effects of experimental drought on soil respiration and radiocarbon efflux from a temperate forest soil. Global Change Biology, 12(2): 177-193. - Chen, X., Zhang, D., Liang, G., Qiu, Q., Liu, J., Zhou, G., …. and Yan, J., 2015. Effects of precipitation on soil organic carbon fractions in three subtropical forests in southern China. Journal of Plant Ecology, 9(1): 10-19. - Curiel Yuste, J., Fernandez-Gonzalez, A.J., Fernandez-Lopez, M., Ogaya, R., Penuelas, J., Sardans, J. and Lloret, F., 2014. Strong functional stability of soil microbial communities under semiarid Mediterranean conditions and subjected to long-term shifts in baseline precipitation. Soil Biology and Biochemistry, 69: 223-233. - Dang, P., Gao, Y., Liu, J., Yu, S. and Zhao, Z., 2018. Effects of thinning intensity on understory vegetation and soil microbial communities of a mature Chinese pine plantation in the Loess Plateau. Science of the Total Environment, 630: 171-180. - Geng, S.M., Yan, D.H., Zhang, T.X., Weng, B.S., Zhang, Z.B. and Qin, T.L., 2015. Effects of drought stress on agriculture soil. Natural Hazards, 75(2): 1997-2011. - Ghorbani, Kh., 2015. Spatial and seasonal pattern in climate change, temperatures across Iran. Journal of Water and Soil Conservation, 21(5): 257-270 (In Persian). - Gou, X., Tan, B., Wu, F., Yang, W., Xu, Z., Li, Z. and Zhang, X., 2015. Seasonal dynamics of soil microbial biomass C and N along an elevational gradient on the eastern Tibetan Plateau, China. PLoS One, 10(7): e0132443. - Hueso, S., García, C. and Hernández, T., 2012. Severe drought conditions modify the microbial community structure, size and activity in amended and unamended soils. Soil Biology and Biochemistry, 50: 167-173. - Jafari Haghighi, M., 2003. Methods of Soil Analysis: Sampling and Important Physical & Chemical Analysis. Nedaye Zoha Press, Sari, 240p (In Persian). - Jenkinson, D.S. and Powelson, D.S., 1976. The effects of biocidal treatments on metabolism in Soil—V: A method for measuring soil biomass. Soil Biology and Biochemistry, 8(3): 209-213. - Jensen, K.D., Beier, C., Michelsen, A. and Emmett, B.A., 2003. Effects of experimental drought on microbial processes in two temperate heathlands at contrasting water conditions. Applied Soil Ecology, 24(2): 165-176. - Li, G., Kim, S., Park, M. and Son, Y., 2017. Short-term effects of experimental warming and precipitation manipulation on soil microbial biomass, substrate utilization patterns, and community composition. Pedosphere, 27(4): 714-724. - Lu, H., Liu, S., Wang, H., Luan, J., Schindlbacher, A., Liu, Y. and Wang, Y., 2017. Experimental throughfall reduction barely affects soil carbon dynamics in a warm-temperate oak forest, central China. Scientific Reports, 7: 15099. - Miao, Y., Han, H., Du, Y., Zhang, Q., Jiang, L., Hui, D. and Wan, S., 2017. Nonlinear responses of soil respiration to precipitation changes in a semiarid temperate steppe. Scientific Reports, 7: 45782. - Muscolo, A., Sidari M. and Mercurio, R., 2007. Variation in soil chemical properties and microbial biomass in artificial gaps in silver fir stands. European Journal Forest Research, 126(1): 59-65. - Ochoa-Hueso, R., Collins, S.L., Delgado-Baquerizo, M., Hamonts, K., Pockman, W.T., Sinsabaugh, R.L., …. and Power, S.A., 2018. Drought consistently alters the composition of soil fungal and bacterial communities in grasslands from two continents. Global Change Biology, 24(7): 2818-2827. - Rafiee, F., Habashi H., Rahmani, R., Sagheb-Talebi, Kh., 2019. Temperature sensitivity of soil carbon dioxide efflux in beech-hornbeam stand (Case study: Shast-kalateh Forest, Gorgan), Iranian Journal of Forest and Poplar Research, 27(1), 112-123 (In Persian). - Salmani, H., Rostami Khalaj, M., Saber Chenari, K., Rouhani, H. and Zare, M., 2014. Investigating the impacts of climate change on extreme events: A case study of the upper Gorganrood watershed, Golestan province, northern Iran. International Bulletin of Water Resources and Development, 2(1): 41-53 (In Persian). - Sardans, J. and Peñuelas, J. 2005. Drought decreases soil enzyme activity in a Mediterranean Quercus ilex L. forest. Soil Biology and Biochemistry, 37(3): 455-461. - Schindlbacher, A., Wunderlich, S., Borken, W., Kitzler, B., Zechmeister-Boltenstern, S. and Jandl, R., 2012. Soil respiration under climate change: prolonged summer drought offsets soil warming effects. Global Change Biology, 18(7): 2270-2279. - Singh, K., Singh, B. and Singh, R.R., 2013. Effect of land rehabilitation on physicochemical and microbial properties of a sodic soil. Catena, 109: 49-57. - Suchewaboripont, V., Ando, M., Iimura, Y., Yoshitake, S. and Ohtsuka, T., 2015. The effect of canopy structure on soil respiration in an old-growth beech-oak forest in central Japan. Ecological Research, 30(5): 867-877. - Tejada, M., Garcia, C., Gonzalez, J.L. and Hernandez, M.T., 2006. Use of organic amendments a strategy for saline soil remediation: Influence on the physical, chemical and biological properties of soil. Soil Biology and Biochemistry, 38(6): 1413-1421. - Xu, B., Wang, J., Wu, N., Wu, Y. and Shi, F., 2018. Seasonal and interannual dynamics of soil microbial biomass and available nitrogen in an alpine meadow in the eastern part of Qinghai-Tibet Plateau, China. Biogeosciences, 15(2): 567-579. - Yang, N., Zou, D., Yang, M. and Lin, Z., 2016. Variations in soil microbial biomass carbon and soil dissolved organic carbon in the re-vegetation of hilly slopes with purple soil. PLoS One, 11(12): e0166536. - Yue, W., Xu, L., Ding, G.D., Guanglei, G., Yuanyuan, Z. and Minghan, Y., 2017. Seasonal changes in soil microbial biomass carbon and nitrogen of different vegetation types in the Mu Us Sandland, northwestern China. Nature Environment and Pollution Technology, 16(4): 1051-1058. | ||
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