کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4380802 1617702 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mixing effects on litter decomposition rates in a young tree diversity experiment
ترجمه فارسی عنوان
اثرات مخلوط کردن بر میزان تجزیه بستر در آزمایش تنوع درختان جوان
کلمات کلیدی
FORBIO؛ عملکرد اکوسیستم تنوع زیستی؛ جنگل معتدل؛ جنگل پس از کشاورزی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی


• We assessed leaf litter decomposition in a young experimental forest.
• Monospecific and mixed litter were put in litterbags in situ for up to 60 weeks.
• Litter quality affected the decomposition rates for the five study tree species.
• Some of the mixed litter showed synergistic effects in decomposition.
• Decomposition rates were affected more by litter composition than by diversity.

Litter decomposition is an essential process for biogeochemical cycling and for the formation of new soil organic matter. Mixing litter from different tree species has been reported to increase litter decomposition rates through synergistic effects. We assessed the decomposition rates of leaf litter from five tree species in a recently established tree diversity experiment on a post-agriculture site in Belgium. We used 20 different leaf litter compositions with diversity levels ranging from 1 up to 4 species. Litter mass loss in litterbags was assessed 10, 20, 25, 35, and 60 weeks after installation in the field. We found that litter decomposition rates were higher for high-quality litters, i.e., with high nitrogen content and low lignin content. The decomposition rates of mixed litter were more affected by the identity of the litter species within the mixture than by the diversity of the litter per se, but the variability in litter decomposition rates decreased as the litter diversity increased. Among the 15 different mixed litter compositions in our study, only three litter combinations showed synergistic effects. Our study suggests that admixing tree species with high-quality litter in post-agricultural plantations helps in increasing the mixture's early-stage litter decomposition rate.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Oecologica - Volume 70, January 2016, Pages 79–86
نویسندگان
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