Product Guide
網址： http://doi.pangaea.de/10013/epic.48919.d001
This metadata information is an excerpt of the paper by Muster et al. (2016) which describes the compilation of the Permafrost Region Pond and Lake Database (PeRL). Ponds and lakes are abundant in Arctic permafrost lowlands. They play an important role in Arctic wetland ecosystems by regulating carbon and water fluxes and providing freshwater habitats. However, ponds, i.e., waterbodies surface areas smaller than 1.0E+04 m², have not been inventoried globally.
PeRL presents the results of a circum-arctic effort to map ponds and alkes from modern (2002-2013) highresolution aerial and satellite imagery with a resolution of 5 m or less that resolves waterbodies down to a surface area of 1.0E+02 m². The database also includes historical imagery from 1948 to 1965
with a resolution of 6 m or smaller.
PeRL includes 69 circum-arctic maps covering a wide range of environmental conditions from tundra to boreal regions and from continuous to discontinuous permafrost zones which present a baseline for high-resolution pond and lake change detection.
Waterbody maps are linked to regional permafrost landscape maps which provide information on permafrost extent, ground ice volume, geology and lithology. Regional permafrost landscape units in Arctic lowlands (<300 m) are used to extrapolate waterbody distribution statistics from the site to the
landscape scale.
PeRL presents pond and lake estimates for a total area of 1.4E+06 km² across the Arctic, some 18 % of the Arctic lowland land surface area. PeRL waterbodies with sizes of 1 km² down to 100 m² contributed up to 21 % to the total water fraction. Waterbody density ranged from 1.0 km-2 to
94 km-2. Ponds are the dominant waterbody type in all landscapes with 45 % to 99 % of the total waterbody number.
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其他資訊
| 欄位 | 值 |
|---|---|
| 最後更新資料 | 2016年12月12日 |
| 最後更新的後設資料 | 2021年11月1日 |
| 建立 | 2016年12月12日 |
| 格式 | |
| 授權 | Creative Commons Attribution 3.0 Unported |
| Datastore active | False |
| Datastore contains all records of source file | False |
| Has views | False |
| Id | 273a02d6-3f05-49e1-b2d6-0fa267a2f4ac |
| Package id | 5649011b-0e76-42cd-892b-4f8907288f69 |
| Position | 4 |
| State | active |
| Tracking summary | {'total': 42, 'recent': 1} |
Attention! The specified license is that of the dataset. Licenses from other sources, e.g. publications or figures related to the dataset, may be subject to other licenses.