کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4759416 | 1421362 | 2017 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Carbon budgets in fertile grey alder (Alnus incana (L.) Moench.) stands of different ages
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Leaf litter accounted for the largest (44-61%) annual organic C input to soil, the fine roots contributed with 12-32% and the herbaceous understorey (aboveground + belowground), with 14-26% to it. Annual cumulative soil heterotrophic respiration (Rh) in the studied stands ranged between 2.6 and 5.8 t C haâ1 yrâ1; C leaching was negligible, being 10-30 kg C haâ1 yrâ1. The C sequestration to soil depended on previous land use; in the first forest generation, i.e. a stand growing on previous agricultural land, the annual Corg input into soil exceeded Rh, which indicated C accumulation in soil. Although grey alder stands are generally C accumulating ecosystems, the annual biomass production of the studied stands was highly variable; thus annual NEP depended on the effect of the year rather than on stand age. The current study demonstrates that use of repeated time-series measurements applied for stands of different development stages can provide more detailed estimation of C accumulation in forest ecosystems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Forest Ecology and Management - Volume 396, 15 July 2017, Pages 55-67
Journal: Forest Ecology and Management - Volume 396, 15 July 2017, Pages 55-67
نویسندگان
V. Uri, M. Kukumägi, J. Aosaar, M. Varik, H. Becker, K. Soosaar, G. Morozov, K. Ligi, A. Padari, I. Ostonen, K. Karoles,