Plant community distribution induced by microtopography due to soil cracks developed on overgrazed alpine meadows on the Tibetan Plateau

2021 ◽  
Author(s):  
Yujie Niu ◽  
Siwei Yang ◽  
Huimin Zhu ◽  
Jianwei Zhou ◽  
Bin Chu ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Plant Community ◽  
The Tibetan Plateau ◽  
Alpine Meadows ◽  
Soil Cracks

The effects of land degradation on plant community assembly: Implications for the restoration of the Tibetan Plateau

2020 ◽  
Vol 31 (18) ◽  
pp. 2819-2829
Author(s):  
Jiufu Luo ◽  
Li Ma ◽  
Guijing Li ◽  
Dongzhou Deng ◽  
Dechao Chen ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Plant Community ◽  
Land Degradation ◽  
Community Assembly ◽  
The Tibetan Plateau ◽  
Plant Community Assembly

Growing Season Ecosystem Respirations and Associated Component Fluxes in Two Alpine Meadows on the Tibetan Plateau

2008 ◽  
Vol 50 (3) ◽  
pp. 271-279 ◽  
Author(s):  
Qi-Wu Hu ◽  
Qin Wu ◽  
Guang-Min Cao ◽  
Dong Li ◽  
Rui-Jun Long ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Growing Season ◽  
The Tibetan Plateau ◽  
Alpine Meadows

Overgrazing leads to soil cracking that later triggers the severe degradation of alpine meadows on the Tibetan Plateau

2019 ◽  
Vol 30 (10) ◽  
pp. 1243-1257 ◽  
Author(s):  
Yujie Niu ◽  
Huimin Zhu ◽  
Siwei Yang ◽  
Sujie Ma ◽  
Jianwei Zhou ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
The Tibetan Plateau ◽  
Alpine Meadows ◽  
Soil Cracking

Solar radiation regulates the leaf nitrogen and phosphorus stoichiometry across alpine meadows of the Tibetan Plateau

2019 ◽  
Vol 271 ◽  
pp. 92-101 ◽  
Author(s):  
Jian Sun ◽  
Biying Liu ◽  
Yong You ◽  
Weipeng Li ◽  
Miao Liu ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Solar Radiation ◽  
Leaf Nitrogen ◽  
The Tibetan Plateau ◽  
Nitrogen And Phosphorus ◽  
Alpine Meadows ◽  
Leaf Nitrogen And Phosphorus

Soil cracking induced by overgrazing triggers the severe degradation or initiates the natural recovery of overgrazed alpine meadows on the Tibetan plateau?

2020 ◽  
Author(s):  
Yujie Niu ◽  
Huimin Zhu ◽  
Siwei Yang ◽  
Jianwei Zhou ◽  
Bin Chu ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Soil Properties ◽  
Soil Compaction ◽  
Terrestrial Ecosystems ◽  
Small Scale ◽  
The Tibetan Plateau ◽  
Eastern Tibetan Plateau ◽  
Alpine Meadows ◽  
Patch Scale ◽  
Soil Cracking

<p>Soil cracking is an important feature of degraded terrestrial ecosystems, which cuts the closed and intact land, alters microtopography and also influences the dynamics of soil nutrients, water and heat, then further affect species distributions. Despite their importance, the patterns and causes of cracks related to overgrazing on alpine rangeland have rarely been reported previously, and the effects of cracks on soil properties and plant distributions are poorly understood. Therefore, we used a comprehensive cross-scale approach to investigate the distribution of crack-soil areas at the eastern Tibetan plateau (217 survey sites), then selected the grazing-induced parameter that was closely related to the cracks at a small scale, and quantified the effects of microtopography (raised areas and healed cracks) induced by cracking on the soil properties, and community composition at crack-mosaic patch from 2013-2018, then to evaluate the further roles of soil cracking on alpine rangelands. The results showed that cracks only formed in the alpine meadow after overstocking. The increased soil compaction under overgrazing was closely related to soil cracking. On crack patch scale, the healed cracks facilitated nutrient and water enrichment due to the increasing surface roughness, then improved the plant communities. To some extent, healed crack mosaics are good for the conservation of water and nutrients. We provide key and easy-to-measure indicators to prevent overgrazing and cracking: a residual biomass greater than 65 g/m<sup>2</sup> and a height greater than 6 cm, and the soil compaction should be lower than 1044.26 ± 188.88 kPa. We should pay more attention to crack phenomena to prevent severe degradation. Overgrazed alpine meadows should be treated in the early phase of cracking and it may be able to return to optimum conditions in healthy rangelands. Otherwise, soil cracking becomes the most critical turning point in the process of alpine rangeland severe degradation.</p>

Effect of nitrification inhibitor on plant biomass and N2O emission rates in alpine meadows on the Tibetan Plateau

2020 ◽  
Vol 36 (5) ◽  
pp. 410-418
Author(s):  
Yangong Du ◽  
Ying Xin ◽  
Kai Shu ◽  
Guangmin Cao ◽  
Huakun Zhou ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Plant Biomass ◽  
Nitrification Inhibitor ◽  
N2o Emission ◽  
The Tibetan Plateau ◽  
Emission Rates ◽  
Alpine Meadows

Stochastic and deterministic processes together determine alpine meadow plant community composition on the Tibetan Plateau

Oecologia ◽  
2012 ◽  
Vol 171 (2) ◽  
pp. 495-504 ◽  
Author(s):  
Zhongling Yang ◽  
Hui Guo ◽  
Jiayang Zhang ◽  
Guozhen Du
Keyword(s):  
Tibetan Plateau ◽  
Community Composition ◽  
Plant Community ◽  
Alpine Meadow ◽  
The Tibetan Plateau ◽  
Plant Community Composition ◽  
Deterministic Processes

The effect of land management on carbon and nitrogen status in plants and soils of alpine meadows on the Tibetan plateau

2005 ◽  
Vol 16 (5) ◽  
pp. 405-415 ◽  
Author(s):  
W. Y. Wang ◽  
Q. J. Wang ◽  
Ch. Y. Wang ◽  
H. L. Shi ◽  
Y. Li ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Land Management ◽  
The Tibetan Plateau ◽  
Nitrogen Status ◽  
Alpine Meadows ◽  
Carbon And Nitrogen

Fertilization influences the nematode community through changing the plant community in the Tibetan Plateau

2017 ◽  
Vol 78 ◽  
pp. 7-16 ◽  
Author(s):  
Jing Hu ◽  
GuoRong Chen ◽  
Wail M. Hassan ◽  
Han Chen ◽  
Junyong Li ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Plant Community ◽  
Nematode Community ◽  
The Tibetan Plateau
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