Results 51 to 60 of about 3,816 (189)

Quaternary Permafrost in China: Framework and Discussions

Quaternary, 2020
The framework of Quaternary permafrost in China was reconstructed for the first time on the basis of available periglacial, glacial, and other proxies. During the Early Pleistocene (2.68–0.80 Ma BP), permafrost advanced southwards to 47–50° N in northern
Huijun Jin, Jef Vandenberghe, Dongliang Luo, Stuart A. Harris, Ruixia He, Xuemei Chen, Xiaoying Jin, Qingfeng Wang, Ze Zhang, Valentin Spektor, Qingbai Wu, Shaoling Wang   +11 more
doaj   +1 more source

Degradation of Seasonally Frozen Ground in the Three–River Source Region and Its Correlation Impact Within Precipitation–Runoff Process

International Journal of Climatology, EarlyView.
This study reveals how climate change alters the water cycle in the Three Rivers Source region by degrading its important ‘solid groundwater’ (seasonally frozen ground). We found that runoff response varies by watershed and the role of permafrost decreases sharply, making water supply more dependent on rainfall and becoming increasingly vulnerable ...
Chenchen Ren, Xiangde Xu, Jieru Ma, Bingrong Zhou, Na Dong, Wenyue Cai, Chunzhu Wang   +6 more
wiley   +1 more source

Can DNA from wet, temperate soils be used for palaeoecological reconstruction?

Journal of Quaternary Science, EarlyView.
ABSTRACT Sedimentary ancient DNA in well‐dated contexts (sedaDNA) has great potential as a palaeoecological proxy. A few studies have attempted palaeoecological reconstructions using sedaDNA from soil; these studies have been mainly restricted to cold and/or dry soils.
Nick A. Cutler, Doreen Yu‐Tuan Huang, Richard T. Streeter, Andrew J. Dugmore   +3 more
wiley   +1 more source

Sensitivity of the impact of aeolian sand cover on permafrost degradation in the Qinghai–Xizang Plateau

Environmental Research Letters
Environmental transformations and intensifying desertification across the Qinghai–Xizang Plateau (QXP) are having a significant influence permafrost degradation, heightening the risks associated with carbon emissions, thermal hazards and infrastructural ...
Luyang Wang, Ziteng Fu, Guanli Jiang, Wenyan Du, Xinyu Men, Dongliang Luo, Qingbai Wu   +6 more
doaj   +1 more source

Impact of Road Network Development on the Spatiotemporal Soil Erosion in the Three‐River Source Region

Land Degradation &Development, EarlyView.
ABSTRACT As a vital water conservation region in China, the Three River Source Region (TRSR) plays a critical role in safeguarding regional ecological security and ensuring the sustainable utilization of water resources. In this study, the Revised Universal Soil Loss Equation (RUSLE) was employed to quantify soil erosion in the study area across three ...
Fei Liu, Longxi Cao, Lilei Wu, Yunqi Zeng   +3 more
wiley   +1 more source

Research progress and perspectives on ecological processes and carbon feedback in permafrost wetlands under changing climate conditions

Fundamental Research
Permafrost wetlands are closely related to potential greenhouse gas emissions under climate warming. In recent decades, climate change and human activities have induced extensive permafrost degradation, severely influencing the stability of wetlands in ...
Changchun Song, Alain N. Rousseau, Yanyu Song, Yang Ou, Ning Chen, Xianwei Wang, Li Sun, Yuedong Guo, Hao Zhang, Zhengang Zhang, Zhuohang Xin   +10 more
doaj   +1 more source

Zooarchaeology of Houses and Middens: Investigating Patterns of Assemblage Composition at Early Inuit Sites Across the North American Arctic

International Journal of Osteoarchaeology, EarlyView.
ABSTRACT This study examines faunal assemblages from paired semisubterranean houses and middens at 10 Early Inuit sites spanning the North American Arctic (ca. 1200–1500 ce) to evaluate whether local resource bases or other factors primarily structure zooarchaeological variability.
Lauren E. Y. Norman, T. Max Friesen, Sean P. A. Desjardins   +2 more
wiley   +1 more source

Microbial communities in submarine permafrost and their response to permafrost degradation and warming [PDF]

, 2020
The Arctic region is especially impacted by global warming as temperatures in high latitude regions have increased and are predicted to further rise at levels above the global average. This is crucial to Arctic soils and the shallow shelves of the Arctic Ocean as they are underlain by permafrost.
openaire   +3 more sources

Interplanetary frontiers: terraforming from an invasion science perspective

Oikos, EarlyView.
The pursuit of a multi‐planetary existence represents one of humanity's greatest frontiers. If applied justly, it offers an opportunity to extend its civilization's lifespan amid escalating sustainability crises on Earth. One approach increasingly gaining traction is terraforming, a hitherto theoretical ecological and evolutionary experiment revolving ...
Teun Everts, Ronaldo Sousa, Phillip J. Haubrock   +2 more
wiley   +1 more source

Modeled Subsidence of Permafrost Terrain 2025–2050: North‐Central Alaska

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT A large fraction of the Alaska terrain is underlain by regolith that contains excess ice (ice that in volume exceeds the natural pore space). Possible loss of excess ice would lead to ground subsidence, which in turn would disturb and destabilize the ground surface.
Jaakko Putkonen, Hayden Patterson, Robert Chance, Mary Soaper, Anai Caparó Bellido, Aymane Ahajjam, Andrew Wilcox, Sheridan Parker, Timothy Pasch   +8 more
wiley   +1 more source