Study on leaf litter decomposition of Loropetalum chinense and Pinus massoniana in karst areas and clastic rock areas in Maocun, Guilin

TU Chunyan; HUANG Binghui; YANG Hui; BAI Bing; MO Biqin; CAO Jianhua

doi:10.11932/karst20180308

Volume 37 Issue 3

Jun. 2018

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TU Chunyan, HUANG Binghui, YANG Hui, BAI Bing, MO Biqin, CAO Jianhua. Study on leaf litter decomposition of Loropetalum chinense and Pinus massoniana in karst areas and clastic rock areas in Maocun, Guilin[J]. CARSOLOGICA SINICA, 2018, 37(3): 379-387. doi: 10.11932/karst20180308

Citation:

TU Chunyan, HUANG Binghui, YANG Hui, BAI Bing, MO Biqin, CAO Jianhua. Study on leaf litter decomposition of Loropetalum chinense and Pinus massoniana in karst areas and clastic rock areas in Maocun, Guilin[J]. CARSOLOGICA SINICA, 2018, 37(3): 379-387. doi: 10.11932/karst20180308

Citation:

TU Chunyan, HUANG Binghui, YANG Hui, BAI Bing, MO Biqin, CAO Jianhua. Study on leaf litter decomposition of Loropetalum chinense and Pinus massoniana in karst areas and clastic rock areas in Maocun, Guilin[J]. CARSOLOGICA SINICA, 2018, 37(3): 379-387. doi: 10.11932/karst20180308

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Study on leaf litter decomposition of Loropetalum chinense and Pinus massoniana in karst areas and clastic rock areas in Maocun, Guilin

doi: 10.11932/karst20180308

1.
College of Life Science, Guangxi Normal University/Institute of Karst Geology,CAGS/Key Laboratory of Karst Dynamics, MNR＆GZAR/The International Research Center on Karst(IRCK)under the Auspices of UNESCO
2.
nstitute of Karst Geology,CAGS/Key Laboratory of Karst Dynamics, MNR＆GZAR/College of Environmental Science and Engineering, Guilin University of Technology
3.
Institute of Karst Geology,CAGS/Key Laboratory of Karst Dynamics, MNR＆GZAR/The International Research Center on Karst(IRCK)under the Auspices of UNESCO

Publish Date: 2018-06-25

Abstract

Abstract

The purpose of this work was to explore the impact of the karst ecological environment on the decomposition of tree litter, and the role of litter decomposition in karst ecosystems in global carbon balance. We utilized field litter bag method to determine the decomposition rate and nutrient release of two species, Loropetalum chinense and Pinus massoniana, both in karst areas and clasolite areas. The results show that (1) the litter decomposition rates of Loropetalum chinense and Pinus massoniana in karst areas are generally lower than that in clasolite areas. (2)The litter decomposition rate coefficient (k) has a significant negative correlation with the carbon content of initial leaf litter nutrient(P<0.05) and a extremely significant negative correlation with the lignin content(P<0.01). (3)In the decomposition process, the release patterns of different nutrients are various. The nutrient element carbon in the leaf litter shows a continuous decrease during the whole decomposition process. (4) The carbon release rate of the two species in karst areas is lower than that in clasolite areas, which extends the carbon cycle to a certain extent and plays a positive role in global climate change.
- karst area,
- clastic rock area,
- Loropetalum chinense,
- Pinus massoniana,
- leaf litter decomposition,
- nutrient release

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References(45)

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Study on leaf litter decomposition of Loropetalum chinense and Pinus massoniana in karst areas and clastic rock areas in Maocun, Guilin

doi: 10.11932/karst20180308

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Study on leaf litter decomposition of Loropetalum chinense and Pinus massoniana in karst areas and clastic rock areas in Maocun, Guilin

doi: 10.11932/karst20180308

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