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تأثیر توسکای ییلاقی (Alnus subcordata) ، بلندمازو (Quercus castaneifolia) و زربین (Cupressus sempervirens var. horizontalis) بر مشخصه‌های لاشبرگ، خاک و تصاعد دی‌اکسید کربن | ||
| تحقیقات جنگل و صنوبر ایران | ||
| مقاله 13، دوره 25، شماره 2 - شماره پیاپی 68، تیر 1396، صفحه 310-319 اصل مقاله (336.82 K) | ||
| نوع مقاله: علمی- پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijfpr.2017.111775 | ||
| نویسندگان | ||
| یحیی کوچ* 1؛ محمدکاظم پارساپور2 | ||
| 1استادیار، گروه جنگل‌داری، دانشکده منابع طبیعی، دانشگاه تربیت مدرس، نور، ایران | ||
| 2دانشجوی دکتری جنگلشناسی و اکولوژی جنگل، دانشکده منابع طبیعی، دانشگاه تربیت مدرس، نور، ایران | ||
| چکیده | ||
| پوشش‌های گیاهی مختلف اثرات متفاوتی بر لاشبرگ و خاک اکوسیستم‌ها دارند. پژوهش پیش‌رو با هدف بررسی تأثیر درختان توسکای ییلاقی (Alnus subcordata C. A. Mey.)، بلندمازو (Quercus castaneifolia C. A. Mey.) و زربین (Cupressus sempervirens L. var. horizontalis (Mill.) Gord.) بر مشخصه‌های لاشبرگ، خاک و تصاعد دی‌اکسید کربن در محدوده طرح جنگل‌داری نیرنگ- خانیکان نوشهر انجام شد. نمونه‌برداری از لایه آلی (لاشبرگ) و معدنی (صفر تا 15 سانتیمتری) خاک به‌صورت منظم- تصادفی انجام شد. مشخصه‌های کیفی لاشبرگ (کربن و نیتروژن)، جرم مخصوص ظاهری، بافت، رطوبت، اسیدیته، کربن آلی، نیتروژن کل و تصاعد دی‌اکسید کربن (در دما و رطوبت‌های مختلف) در آزمایشگاه اندازه‌گیری شد. نتایج نشان داد که بیشترین مقدار مشخصه‌های نیتروژن لاشبرگ، سیلت و اسیدیته خاک به توسکای ییلاقی اختصاص داشت، در حالی‌که بیشترین مقدار مشخصه‌های نسبت کربن به نیتروژن لاشبرگ، رطوبت، کربن آلی، نسبت کربن به نیتروژن خاک و تصاعد دی‌اکسید کربن در بخش زیرین توده زربین مشاهده شد. مقدار بیشتر درصد شن نیز به توده بلندمازو تعلق داشت. در تمام درختان مورد مطالعه، بیشترین مقدار تصاعد دی‌اکسید کربن در شرایط رطوبت عرصه مشاهده شد و با افزایش دما مقدار تصاعد افزایش یافت. نتایج این پژوهش بر این امر دلالت داشت که جنگلکاری با گونه سوزنی‌برگ زربین در سطوح وسیع می‌تواند منجر به افزایش مقدار تصاعد دی‌اکسید کربن از خاک شود که باید از دیدگاه گرمایش جهانی، در مدیریت اکوسیستم‌ها مورد توجه قرار گیرد. | ||
| کلیدواژه‌ها | ||
| جنگلکاری؛ دما؛ رطوبت؛ کربن؛ نیتروژن | ||
| عنوان مقاله [English] | ||
| Effect of Caucasian alder (Alnus subcordata C. A. Mey.), Chestnut-leaved oak (Quercus castaneifolia C. A. Mey.) and horizontal cypress (Cupressus sempervirens L. var. horizontalis (Mill.) Gord.) plantation on litter, soil and CO2 emission characters | ||
| نویسندگان [English] | ||
| Yahya Kooch1؛ Mohammad Kazem Parsapour2 | ||
| 1Assistant Prof., Faculty of Natural Resources, Tarbiat Modares University, Noor, Iran | ||
| 2Ph.D. Student Silviculture and Forest Ecology, Faculty of Natural Resources, Tarbiat Modares University, Noor, Iran | ||
| چکیده [English] | ||
| Different plant covers have various effects on ecosystem litter and soil characters. This research aims to study the effect of different forest covers (Alnus subcordata C. A. Mey., Quercus castaneifolia C. A. Mey. and Cupressus sempervirens L. var. horizontalis (Mill.) Gord.) on litter, soil and CO2 emission characters in the forest management plan of Nowshahr Neirang-Khanikan. Soil samples were taken from the organic (litter) and mineral (0-15cm) layers using randomly systematic method. Litter quality characters (carbon and nitrogen), soil bulk density, texture, water content, pH, organic carbon, total nitrogen and CO2 emission (in different water content and temperature regimes) were measured in the laboratory. Results showed that the highest values of litter nitrogen, silt, pH were found in alder plantation, whereas greater amounts of C/N of litter, water content, organic carbon, C/N of soil and CO2 emission were found under cypress stand. The highest amount of sand was detected under oak stand. The maximum of CO2 emission were occurred in field capacity moisture regime and higher temperature in whole of studied plantations. The results of this research indicate that afforestation with needle-leaved species, Cupressus sempervirens var. horizontalis, can be effective on the increasing CO2 emission from soil that must be considered in ecosystem management from the global warming point of view. | ||
| کلیدواژه‌ها [English] | ||
| afforestation, Carbon, nitrogen, temperature, water content | ||
| مراجع | ||
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