Variation of main terrestrial carbon stocks at the landscape-scale are shaped by soil in a tropical rainforest.
作者： Armando Navarrete-Segueda , Miguel Martínez-Ramos , Guillermo Ibarra-Manríquez , Lorenzo Vázquez-Selem , Christina Siebe
DOI: 10.1016/J.GEODERMA.2017.10.023
关键词: Soil organic matter 、 Forestry 、 Tropical rainforest 、 Soil carbon 、 Forest ecology 、 Rainforest 、 Soil biodiversity 、 Soil chemistry 、 Soil science 、 Ecosystem 、 Environmental science
摘要: Abstract Economic incentives to offset carbon dioxide (CO2) emissions associated with deforestation and other human activities affecting forest ecosystems depend on robust estimates of changes in (C) stocks. Such stocks are difficult assess heterogeneous landscapes where the soil properties structure functionality vary space time. Here we show that geopedological mapping is useful quantify above- belowground C different land units Lacandon tropical rainforest, southeast Mexico. We used an ordination method recognize major gradients applied regression analyses identify relationships between AGB. Total differed among (287 478 Mg C ha− 1 limestone mountains fluvial terraces, respectively). Soil constrains like rooting depth (ranging from 0.13 1.34 m), available water storage capacity 32.3 161.4 L m− 2) Al saturation ion exchange complex (0 22.6% Alsat) were correlated aboveground biomass (AGB) stock by stem size density trees. organic (SOC) solum represented 22 46% total landscape units, which 28 45% was stored below 30 cm depth. Therefore, accurate assessment must consider not only variation contrasting properties, but also Our results indicate stratified sampling based geopedologic allocate at relatively low costs reasonable effort.
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