期刊
WETLANDS ECOLOGY AND MANAGEMENT
卷 24, 期 2, 页码 113-127出版社
SPRINGER
DOI: 10.1007/s11273-016-9482-2
关键词
Peatland; Paramo; Carbon; Accumulation rates; Tuberas
资金
- Antisana Ecological Reserve
- Cayambe-Coca National Park
- Sustainable Wetlands Adaptation and Mitigation program (SWAMP)
- USDA Forest Service
- Lawrence Livermore National Laboratory
- Michigan Technological University
- Universidad San Francisco de Quito
- Antisana Ecological Reserve
- Cayambe-Coca National Park
- Sustainable Wetlands Adaptation and Mitigation program (SWAMP)
- USDA Forest Service
- Lawrence Livermore National Laboratory
- Michigan Technological University
- Universidad San Francisco de Quito
The paramo is a high altitude tropical Andean ecosystem that contains peatlands with thick horizons of carbon (C) dense soils. Soil C data are sparse for most of the paramo, especially in peatlands, which limits our ability to provide accurate regional and country wide estimates of C storage. Therefore, the objective of our research was to quantify belowground C stocks and accumulation rates in paramo peatland soils in two regions of northeastern Ecuador. Peatland soil cores were collected from Antisana Ecological Reserve and Cayambe-Coca National Park. We measured soil C densities and C-14 dates to estimate soil accumulation rates. The mean peatland soil depth across both regions was 3.8 m and contained an estimated mean C storage of 1282 Mg ha(-1). Peatlands older than 3000 cal. year BP had a mean long-term C accumulation rate of 26 g m(-2) year(-1), with peatlands younger than 500 cal. year BP displaying mean recent rates of C accumulation of 134 g m(-2) year(-1). These peatlands also receive large inputs of mineral material, predominantly from volcanic deposition, that has created many interbedded non-peat mineral soil horizons that contained 48 % of the soil C. Because of large C stocks in Ecuadorian mountain peatlands and the potential disturbance from land use and climate change, additional studies are need to provide essential baseline assessments and estimates of C storage in the Andes.
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