[Effects of human engineering activities on permafrost active layer and its environment in northern Qinghai-Tibetan plateau]

[Effects of human engineering activities on permafrost active layer and its environment in northern Qinghai-Tibetan plateau] Research Abstract Details 

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[Effects of human engineering activities on permafrost active layer and its environment in northern Qinghai-Tibetan plateau] Abstract Text:

Zhenggang Guo,Qingbo Wu,Fujun Niu,Zhenggang Guo,Qingbo Wu,Fujun Niu,

With disturbed and undisturbed belts during the construction of Qinghai-Tibet highway as test objectives, this paper studied the effects of human engineering activities on the permafrost ecosystem in northern Qinghai-Tibetan plateau. The results showed that the thickness of permafrost active layer was smaller in disturbed than in undisturbed belt, and decreased with increasing altitude in undisturbed belt while no definite pattern was observed in disturbed belt. Different vegetation types had different effects on the thickness of permafrost active layer, being decreased in the order of steppe > shrub > meadow. In the two belts, altitude was the main factor affecting the vertical distribution of soil moisture, but vegetation type was also an important affecting factor if the altitude was similar. Due to the human engineering activities, soil temperature in summer was lower in disturbed than in undisturbed belt.

[Effects of human engineering activities on permafrost active layer and its environment in northern Qinghai-Tibetan plateau] Publishing Authors By Initials

Z Guo,Q Wu,F Niu,Z Guo,Q Wu,F Niu,

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[Effects of human engineering activities on permafrost active layer and its environment in northern Qinghai-Tibetan plateau] Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Ying yong sheng tai xue bao = The journal of appli

VOLUME: 17

Page Numbers: 2136-40

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ISSN: 1001-9332

DAY: 2

MONTH: Nov

YEAR: 2006

[Effects of human engineering activities on permafrost active layer and its environment in northern Qinghai-Tibetan plateau] Information

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LANGUAGE: chi

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AFFILIATION: Key Laboratory of Grassland Agro-Ecosystem of Agriculture Ministry, College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730020, China. zhenggangguo200@yahoo.com.cn

Country: China

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MEDLINETA: Ying Yong Sheng Tai Xue Bao

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