Shichang Kang, Wanqin Guo, Tonghua Wu, Xinyue Zhong, Rensheng Chen, Min Xu, Jinlei Chen, Ruimin Yang
Advances in Earth Science, 2020 35 (1): 17
“Belt and Road” regions include Asia, Europe and eastern and northern Africa, with a wide spatial distribution. The cryosphere is undergoing rapid changes in the Belt and Road regions with global warming, and has an important impact on water resources, ecosystems and Arctic waterways in these regions. This article reviewed recent cryospheric changes and associated impacts on water resources in the Belt and Road regions during the last decades. The main cognitions are as follows: ① Most glaciers are shrinking and glacier mass balances are most negative, but there are regional differences in the changes of glaciers. ② Global temperature rise has resulted in permafrost degradation, including a . . .
Zhixin Hao, Maowei Wu, Xuezhen Zhang, Yang Liu, Jingyun Zheng
Advances in Earth Science, 2020 35 (1): 25
Revealing the multi-scale variation characteristics of the drought/flood patterns for the past millennium has been a hot spot in climate change research in recent years. It has significance for understanding and predicting the temporal and spatial differences of precipitation changes in the context of future climate warming. Based on publications on the peer-reviewed journals, here, we summarized and compared the combinations between cold/warm periods and dry/wet spatial patterns at multi-scales in China over the past millennium. The main conclusions are: although there are differences in China's dry/wet patterns in different cold and warm periods for the past millennium, the ensemble mean s. . .
Advances in Earth Science, 2019 34 (12): 1233
The discovery of deep sea coral forests in the spring of 2018 filled a significant gap in the benthos research and even in carbon cycling in the South China Sea. Previously, the researches of deep-sea benthos were restricted to the sediment-covered soft bottom due to the technical limitations, and the rocky hard bottom was believed to be barren of life. Using submersible technique in the mid-1990s, deep-water coral reefs were first discovered in the Atlantic Ocean, which opened a new research direction in marine sciences. Two groups of deep sea corals have been recognized: scleractinian hexacorals and gorgonian octocorals. The aragonite skeleton of the former group build up deep sea coral re. . .
Zhengcai Zhang, Kaijia Pan, Aimin Liang, Zhibao Dong, Xingcai Li
Advances in Earth Science, 2019 34 (9): 900
Gobi is one of the most important landscapes in northwest China, and it is also one of the dust sources in north China and even in central Asia. Based on the different land surface characteristics on the gobi surface, sand and dust emission process and mechanism are obviously different with other landscapes, such as sandy desert. Dust emission process and mechanism on the gobi surface were analyzed in this paper. Wind power system, geomorphology pattern and underlying characteristics were considered for their effect on the sand and dust emission process. Then, the mechanism of land surface characteristics on threshold wind velocity was analyzed. Finally, based on the previous studies on dust. . .
Tao Zhou, Zhuang Jiang, Lei Geng
Advances in Earth Science, 2019 34 (9): 935
Oxidized reactive nitrogen in the atmosphere mainly consists of nitrogen oxides (NO X =NO+NO2, NO3) and nitric acid. The atmospheric cycling of NO X influences the formation of ozone and hydroxyl radicals that are important for atmospheric oxidation capacity. Nitric acid, the final product of NO X oxidation, not only is an important component of particulate pollutants, but also has a direct impact on the ecosystem through dry and wet deposition. The stable nitrogen isotope (δ15N) shows the potential to study reactive nitrogen cycle, and to trace the emission, transport and deposition of reactive nitrogen from local to global scales. Here, we reviewed previous studies using δ15N to investig. . .