کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4380636 1617703 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Changes in carbon and nitrogen storage along a restoration gradient in a semiarid sandy grassland
ترجمه فارسی عنوان
تغییرات ذخیره سازی کربن و نیتروژن در طول یک گرادیان ترمیم در یک علفزار شبه نیمه خشک
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی


• We found a significant increase in C and N along the restoration gradient of sandy grassland.
• The highest proportion of C and N sequestration in the system is in the soil.
• Habitat restoration in sandy grasslands is associated with changes in ecosystem C and N.
• Species richness is associated with higher C and N storage in this sandy grassland system.

Understanding carbon (C) and nitrogen (N) pools in degraded ecosystems is useful to predict future C and N sequestration potential during restoration. Here we examined the distribution of C and N pools in plant–soil system at four successional stages: mobile dune, semi-fixed dune, fixed dune and grassland. The four stages reflect the successional sequence during sandy grassland restoration in Horqin Sandy Land, Northern China. C and N storage in plant biomass, litter and soil increased significantly with advancing sandy grassland restoration. With the conversion from mobile dune to semi-fixed dune, fixed dune and grassland, total ecosystem C and N storage increased by 1.9, 4.8, 7.1 and 3.3, 15.7, 20.6 times, respectively. More than 80% of C and N storage were stored in soil in sandy grassland restoration. C or N storage in plant and root biomass, litter and soil was positively correlated to species richness. Soil C and N storage was positively correlated to the C and N in plant and root biomass. These results suggest that sandy grassland restoration has a high potential to sequester C and N in the soil. Increasing plant production and species diversity via restoration likely enhance the C and N sequestration in sandy grassland ecosystems.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Oecologica - Volume 69, November 2015, Pages 1–8
نویسندگان
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