Carbon storage and flux for alpine tundra ecosystems in Changbai Mountains, Northeast China

2007 ◽  
Vol 18 (2) ◽  
pp. 109-113
Author(s):  
Yong-xiang Wang ◽  
Jing Wei ◽  
Ping Jiang ◽  
Gang Wu ◽  
Hong-chang Wang
Keyword(s):  
Carbon Storage ◽  
Northeast China ◽  
Alpine Tundra ◽  
Changbai Mountains ◽  
Tundra Ecosystems

scholarly journals Soil Mesofauna Respond to the Upward Expansion of Deyeuxia purpurea in the Alpine Tundra of the Changbai Mountains, China

Plants ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 615
Author(s):  
Yan Tao ◽  
Zhongqiang Wang ◽  
Chen Ma ◽  
Hongshi He ◽  
Jiawei Xu ◽  
...  
Keyword(s):  
Northeast China ◽  
Taxonomic Composition ◽  
Alpine Tundra ◽  
Changbai Mountains ◽  
Herbaceous Plant ◽  
Native Plant ◽  
Soil Mesofauna ◽  
Faunal Communities ◽  
Low Altitude ◽  
Different Levels

Deyeuxia purpurea, a low-altitude species, has been expanding upwards into alpine tundra, and this upward expansion is causing serious ecological consequences. However, few studies have been performed regarding its effects on soil faunal communities. We examine how the upward expansion of D. purpurea affects the abundance, richness, and diversity of soil mesofauna, and evaluate how different taxa of soil mesofauna respond to the upward expansion of D. purpurea in the alpine tundra of Changbai Mountains, northeast China. A total of 128 soil mesofaunal samples were collected from four treatments, namely high upward expansion (HU), medium upward expansion (MU), low upward expansion (LU), and native plant habitats (NP). The results revealed that the abundance of soil mesofauna was increased with the rise of D. purpurea upward expansion, and the taxonomic composition varied with the different levels of D. purpurea upward expansion in the alpine tundra of the Changbai Mountains. No unique taxa were collected in the native plant habitats, and the upward expansion of D. purpurea promoted the colonization of predatory invertebrates. Isotomidae and Gamasida responded positively to the herbaceous plant upward expansion, and thus they were considered to be a positive indicator of upward expansion. Hypogastruridae and Enchytraeidae responded relatively negatively, while Oribatida, Actinedida, and Pseudachorutidae had ambivalent responses to the upward expansion. Overall, the abundance of soil mesofauna can indicate the levels of the upward expansion of D. purpurea. Soil mesofaunal guild characteristics were altered by the upward expansion. The different taxa of soil mesofauna responded to herbaceous plants’ upward expansion to various degrees. Therefore, this study provide evidence supporting the fact that the abundance of soil mesofauna can indicate the levels of upward expansion of D. purpurea, but the responses of soil mesofauna to the upward expansion of D. purpurea differ among their taxa.

scholarly journals The Impact of Human Pressure and Climate Change on the Habitat Availability and Protection of Cypripedium (Orchidaceae) in Northeast China

Plants ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 84
Author(s):  
Huanchu Liu ◽  
Hans Jacquemyn ◽  
Xingyuan He ◽  
Wei Chen ◽  
Yanqing Huang ◽  
...  
Keyword(s):  
Climate Change ◽  
Northeast China ◽  
Habitat Destruction ◽  
Changbai Mountains ◽  
Suitable Habitat ◽  
Human Pressure ◽  
Terrestrial Orchids ◽  
The Future ◽  
Suitable Habitats ◽  
The Impact

Human pressure on the environment and climate change are two important factors contributing to species decline and overall loss of biodiversity. Orchids may be particularly vulnerable to human-induced losses of habitat and the pervasive impact of global climate change. In this study, we simulated the extent of the suitable habitat of three species of the terrestrial orchid genus Cypripedium in northeast China and assessed the impact of human pressure and climate change on the future distribution of these species. Cypripedium represents a genus of long-lived terrestrial orchids that contains several species with great ornamental value. Severe habitat destruction and overcollection have led to major population declines in recent decades. Our results showed that at present the most suitable habitats of the three species can be found in Da Xing’an Ling, Xiao Xing’an Ling and in the Changbai Mountains. Human activity was predicted to have the largest impact on species distributions in the Changbai Mountains. In addition, climate change was predicted to lead to a shift in distribution towards higher elevations and to an increased fragmentation of suitable habitats of the three investigated Cypripedium species in the study area. These results will be valuable for decision makers to identify areas that are likely to maintain viable Cypripedium populations in the future and to develop conservation strategies to protect the remaining populations of these enigmatic orchid species.

Estimating organic carbon storage in temperate wetland profiles in Northeast China

Geoderma ◽  
2008 ◽  
Vol 146 (1-2) ◽  
pp. 311-316 ◽  
Author(s):  
Wen-Ju Zhang ◽  
He-Ai Xiao ◽  
Cheng-Li Tong ◽  
Yi-Rong Su ◽  
Wan-sheng Xiang ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Carbon Storage ◽  
Northeast China ◽  
Temperate Wetland ◽  
Organic Carbon Storage

scholarly journals Are low altitude alpine tundra ecosystems under threat? A case study from the Parc National de la Gaspésie, Québec

2014 ◽  
Vol 9 (9) ◽  
pp. 094001 ◽  
Author(s):  
Catherine Dumais ◽  
Pascale Ropars ◽  
Marie-Pier Denis ◽  
Geneviève Dufour-Tremblay ◽  
Stéphane Boudreau
Keyword(s):  
Alpine Tundra ◽  
Low Altitude ◽  
Tundra Ecosystems
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