Eight Mile Lake Research Watershed, Thaw Gradient: NDVI 2013-2018
In this larger study, we are asking the question: Is old carbon that comprises the bulk of the soil organic matter pool released in response to thawing of permafrost? We are answering this question by using a combination of field and laboratory experiments to measure radiocarbon isotope ratios in so...
| Main Authors: | , , , , |
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| Format: | Dataset |
| Language: | English |
| Published: |
Environmental Data Initiative
2019
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.6073/pasta/43b1d8a60dfc50f97bcafa4d1b238a63 https://portal.edirepository.org/nis/mapbrowse?packageid=knb-lter-bnz.636.10 |
| Summary: | In this larger study, we are asking the question: Is old carbon that comprises the bulk of the soil organic matter pool released in response to thawing of permafrost? We are answering this question by using a combination of field and laboratory experiments to measure radiocarbon isotope ratios in soil organic matter, soil respiration, and dissolved organic carbon, in tundra ecosystems. The objective of these proposed measurements is to develop a mechanistic understanding of the SOM sources contributing to C losses following permafrost thawing. We are making these measurements at an established tundra field site near Healy, Alaska in the foothills of the Alaska Range. Field measurements center on a natural experiment where permafrost has been observed to warm and thaw over the past several decades. This area represents a gradient of sites each with a different degree of change due to permafrost thawing. As such, this area is unique for addressing questions at the time and spatial scales relevant for change in arctic ecosystems. The Normalized Difference Vegetation Index (NDVI) was measured using a specialized handheld camera at individual plots throughout the growing seasons. |
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