In 1923, after Alaska became a U.S. territory and decades before statehood (1959), President Harding declared the western Arctic as a Naval Petroleum Reserve by Executive Order to provide energy reserves to the U.S. Navy. Between 1944 and 1982, 136 wells and core tests were drilled in th...
Ice core-derived records provide a history of climatic variability through proxy data such as net annual accumulation, oxygen isotopic composition, annual dust concentration, and glaciochemical fluxes. These properties preserved in ice cores from southeast Alaska and west central Greenland provide new ...
Temperate peatlands and heathlands contain globally important carbon stores that are becoming increasingly susceptible to wildfires under climate and land use change (Page and Baird2016; Kirkland et al2023). Peatlands store 550 gigatons of organic soil carbon globally, and approximately 0.19–0.88 milli...
This overall accuracy is slightly higher than the rates of 80%–89% achieved in other large-area mapping projects around the world [14,28,31,41,42] and comparable with the rate of 95% achieved for Alaska [16]. For the coastal Great Lakes maps, a few wetland classes had individual accu...
Mapping Vegetated Wetlands of Alaska Using L-Band Radar Satellite Imagery. Can. J. Remote Sens. 2009, 35, 54–72. [Google Scholar] [CrossRef] Stubbs, Q.; Yeo, I.Y.; Lang, M.G.; Townshend, J.; Sun, L.X.; Prestegaard, K.; Jantz, C. Assessment of Wetland Change on the Del...
aThe canoe, carved from cedar, was discovered under a thick layer of moss and is surrounded by trees that are several hundred years old, said the Alaska Native Corporation that owns the land, 独木舟,雕刻从雪松,被发现了在青苔之下厚实的层数和由是几百年的树围拢,说拥有土地的阿拉斯加国内公司,[tra...
A polar bear swims underwater in the St-Felicien Wildlife Zoo in Quebec on Oct. 31. According to Environment Canada, Canada is home to around 15,000 of the estimated 20,000 polar bears in the world. The United States (Alaska), Russia, Greenland and Norway are the other four countries ...
aA polar bear swims underwater in the St-Felicien Wildlife Zoo in Quebec on Oct. 31. According to Environment Canada, Canada is home to around 15,000 of the estimated 20,000 polar bears in the world. The United States (Alaska), Russia, Greenland and Norway are the other four countries...
Characteristics of soil water⁃ soluble organic C and N under different land uses in Alaska. Soil Science, 2012, 177: 683-694Zhao, A., Zhang, M. and He, Z. (2012) Characteristics of Soil Water-Soluble Or- ganic C and N under Different Land Uses in Alaska. Soil Science, 177, 683...
In this study, field moist and air dried soils sampled from subarctic Alaska under three land use managements (i. e. forest, agriculture; and grassland converted from agricultural use and under a Conservation Reserve Program-CRP) were extracted with deionized (DI) water, and separated by ...