Proceedings of the International Conference on Logistics, Engineering, Management and Computer Science

Analysis on SOM and Available Nutrient of Mountain Red Earth in Karst Area

Authors
Mengjing Xiao, Jiaxue Wang, Lie Zhang, Qian Zhao
Corresponding Author
Mengjing Xiao
Available Online July 2015.
DOI
10.2991/lemcs-15.2015.330How to use a DOI?
Keywords
Karst; Mountain red earth; SOM; Available nutrient; Rocky desertification
Abstract

Mountain red earth is a kind of relic ancient clay remained on the Yunnan Plateau formed under the influence of paleo climate, but this soil has experienced degradation recently. To understand the mechanism and effects of such degradation, this study examined the mountain red earth based on the analysis of soil organic matter (SOM) and available nutrient. Particularly, soil samples were taken from area covered with pine, shrub land, grassland or uncovered red soil respectively in the karst area of east Yunnan. The results indicated that the highest SOM contents was grassland (5.00%), while bare land was the lowest (1.44%), average contents of vegetated land(4.48%) was 3.11 times of bare land; the highest Available K (AK) contents was shrub land (26.26mg/kg), while bare land was the lowest (1.36 mg/kg), average contents of vegetated land (22.39 mg/kg) was 2.75 times of bare land; the highest Available P (AP) contents was grass land (5.15 mg/kg), while bare land was the lowest (1.36 mg/kg), average contents of vegetated land(3.80 mg/kg) was2.79times of bare land. In addition, there was a significant and positive correlation of the contents of SOM with AK and AP. Thus, the red bare soil can be considered as the last stage to the rocky desertification. All these suggest one possible and viable way to improve the structural condition of a layer of red bare soil by increasing the contents of SOM.

Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the International Conference on Logistics, Engineering, Management and Computer Science
Series
Advances in Intelligent Systems Research
Publication Date
July 2015
ISBN
978-94-6252-102-5
ISSN
1951-6851
DOI
10.2991/lemcs-15.2015.330How to use a DOI?
Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Mengjing Xiao
AU  - Jiaxue Wang
AU  - Lie Zhang
AU  - Qian Zhao
PY  - 2015/07
DA  - 2015/07
TI  - Analysis on SOM and Available Nutrient of Mountain Red Earth in Karst Area
BT  - Proceedings of the International Conference on Logistics, Engineering, Management and Computer Science
PB  - Atlantis Press
SP  - 1643
EP  - 1646
SN  - 1951-6851
UR  - https://doi.org/10.2991/lemcs-15.2015.330
DO  - 10.2991/lemcs-15.2015.330
ID  - Xiao2015/07
ER  -