Mineralisation and Changes in the Fractions of Soil Organic Matter in Soils of the Permafrost Region, Qinghai‐Tibet Plateau, China
ABSTRACT To determine the relationship between soil organic matter (SOM) decomposition and chemistry in the permafrost region of the Qinghai‐Tibet Plateau (QTP), 300‐day laboratory incubations at 25°C and chemical fractionation were performed to characterise the mineralisation dynamics of organic ca...
Published in: | Permafrost and Periglacial Processes |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2013
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/ppp.1796 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1796 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1796 |
id |
crwiley:10.1002/ppp.1796 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/ppp.1796 2024-09-15T18:29:45+00:00 Mineralisation and Changes in the Fractions of Soil Organic Matter in Soils of the Permafrost Region, Qinghai‐Tibet Plateau, China Wu, Xiaodong Fang, Hongbing Zhao, Lin Wu, Tonghua Li, Ren Ren, Zhengwei Pang, Qiangqiang Ding, Yongjian 2013 http://dx.doi.org/10.1002/ppp.1796 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1796 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1796 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 25, issue 1, page 35-44 ISSN 1045-6740 1099-1530 journal-article 2013 crwiley https://doi.org/10.1002/ppp.1796 2024-07-23T04:12:01Z ABSTRACT To determine the relationship between soil organic matter (SOM) decomposition and chemistry in the permafrost region of the Qinghai‐Tibet Plateau (QTP), 300‐day laboratory incubations at 25°C and chemical fractionation were performed to characterise the mineralisation dynamics of organic carbon from soils under five vegetation conditions. The respiration rates in wet meadows were the highest, followed by the Kobresia pygmaea meadow and K . robusta meadow. After the incubation period, all four fractions of SOM – non‐polarity soluble, water soluble, holocellulose and lignin contents – showed some decline, and the SOM decreased by 16–20 per cent in soils of the steppe, meadow and wet meadow. These results suggest that a large proportion of the organic matter in soils of the permafrost region in the QTP is mineralisable. Based on the changes in chemical fractions of organic matter, it could be determined that soils with higher water‐soluble fractions had higher rates of carbon mineralisation, while the mechanisms involved in the respiration of different chemical fractions are complicated. Copyright © 2013 John Wiley & Sons, Ltd. Article in Journal/Newspaper permafrost Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 25 1 35 44 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
ABSTRACT To determine the relationship between soil organic matter (SOM) decomposition and chemistry in the permafrost region of the Qinghai‐Tibet Plateau (QTP), 300‐day laboratory incubations at 25°C and chemical fractionation were performed to characterise the mineralisation dynamics of organic carbon from soils under five vegetation conditions. The respiration rates in wet meadows were the highest, followed by the Kobresia pygmaea meadow and K . robusta meadow. After the incubation period, all four fractions of SOM – non‐polarity soluble, water soluble, holocellulose and lignin contents – showed some decline, and the SOM decreased by 16–20 per cent in soils of the steppe, meadow and wet meadow. These results suggest that a large proportion of the organic matter in soils of the permafrost region in the QTP is mineralisable. Based on the changes in chemical fractions of organic matter, it could be determined that soils with higher water‐soluble fractions had higher rates of carbon mineralisation, while the mechanisms involved in the respiration of different chemical fractions are complicated. Copyright © 2013 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Wu, Xiaodong Fang, Hongbing Zhao, Lin Wu, Tonghua Li, Ren Ren, Zhengwei Pang, Qiangqiang Ding, Yongjian |
spellingShingle |
Wu, Xiaodong Fang, Hongbing Zhao, Lin Wu, Tonghua Li, Ren Ren, Zhengwei Pang, Qiangqiang Ding, Yongjian Mineralisation and Changes in the Fractions of Soil Organic Matter in Soils of the Permafrost Region, Qinghai‐Tibet Plateau, China |
author_facet |
Wu, Xiaodong Fang, Hongbing Zhao, Lin Wu, Tonghua Li, Ren Ren, Zhengwei Pang, Qiangqiang Ding, Yongjian |
author_sort |
Wu, Xiaodong |
title |
Mineralisation and Changes in the Fractions of Soil Organic Matter in Soils of the Permafrost Region, Qinghai‐Tibet Plateau, China |
title_short |
Mineralisation and Changes in the Fractions of Soil Organic Matter in Soils of the Permafrost Region, Qinghai‐Tibet Plateau, China |
title_full |
Mineralisation and Changes in the Fractions of Soil Organic Matter in Soils of the Permafrost Region, Qinghai‐Tibet Plateau, China |
title_fullStr |
Mineralisation and Changes in the Fractions of Soil Organic Matter in Soils of the Permafrost Region, Qinghai‐Tibet Plateau, China |
title_full_unstemmed |
Mineralisation and Changes in the Fractions of Soil Organic Matter in Soils of the Permafrost Region, Qinghai‐Tibet Plateau, China |
title_sort |
mineralisation and changes in the fractions of soil organic matter in soils of the permafrost region, qinghai‐tibet plateau, china |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1002/ppp.1796 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1796 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1796 |
genre |
permafrost Permafrost and Periglacial Processes |
genre_facet |
permafrost Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 25, issue 1, page 35-44 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.1796 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
25 |
container_issue |
1 |
container_start_page |
35 |
op_container_end_page |
44 |
_version_ |
1810471186927190016 |