کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4380493 1304003 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Biogeochemical cycle of Sulfer in the Calamagrostis angustifolia wetland ecosystem in the Sanjiang Plain, China
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Biogeochemical cycle of Sulfer in the Calamagrostis angustifolia wetland ecosystem in the Sanjiang Plain, China
چکیده انگلیسی

To better understand the Sulfur (S) cycle in the wetland ecosystem, the S cycle and its compartmental distribution within an atmosphere-plant-soil system were studied using a compartment model in the Calamagrostis angustifolia wetland in the Sanjiang Plain, Northeast China. The results showed that the soil was the main S storage and flux hinge in which 97.78% S was accumulated. In the plant subsystem, the root was the main S storage, and it remained at 79.60% of the total S contents, which in the Calamagrostis angustifolia wetland ecosystem showed that the parts above the ground took up 0.75 g S/m2, the S re-transferring biomass to the root was 0.24 g S/m2, and to the litter was 0.51 g S/m2; the root took up 3.76 g S/m2 and the S transferring biomass to the soil took up 3.07 g S/m2; the litter S biomass was 0.75 g S/(m2·a) and the S transferring biomass to the soil was more than 0.52 g S/(m2·a). The emission amount of H2S from the Calamagrostis angustifolia wetland ecosystem to the atmosphere was 1.42 mg S/m2, whereas carbonyl sulfide (COS) was absorbed by the Calamagrostis angustifolia wetland from the atmosphere and the absorption amount was 1.83 mg S/m2. The S input biomass from the rain to the ecosystem was 4.85mg S/m2 during the growing season. The difference between input and output amounts was 5.26 mg S/m2, which indicated that S was accumulated in the ecosystem and would lead to wetland acidification in the future.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Ecologica Sinica - Volume 27, Issue 6, June 2007, Pages 2199-2207