1
|
Saha S, Huang L, Khoso MA, Wu H, Han D, Ma X, Poudel TR, Li B, Zhu M, Lan Q, Sakib N, Wei R, Islam MZ, Zhang P, Shen H. Fine root decomposition in forest ecosystems: an ecological perspective. FRONTIERS IN PLANT SCIENCE 2023; 14:1277510. [PMID: 38023858 PMCID: PMC10643187 DOI: 10.3389/fpls.2023.1277510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 10/16/2023] [Indexed: 12/01/2023]
Abstract
Fine root decomposition is a physio-biochemical activity that is critical to the global carbon cycle (C) in forest ecosystems. It is crucial to investigate the mechanisms and factors that control fine root decomposition in forest ecosystems to understand their system-level carbon balance. This process can be influenced by several abiotic (e.g., mean annual temperature, mean annual precipitation, site elevation, stand age, salinity, soil pH) and biotic (e.g., microorganism, substrate quality) variables. Comparing decomposition rates within sites reveals positive impacts of nitrogen and phosphorus concentrations and negative effects of lignin concentration. Nevertheless, estimating the actual fine root breakdown is difficult due to inadequate methods, anthropogenic activities, and the impact of climate change. Herein, we propose that how fine root substrate and soil physiochemical characteristics interact with soil microorganisms to influence fine root decomposition. This review summarized the elements that influence this process, as well as the research methods used to investigate it. There is also need to study the influence of annual and seasonal changes affecting fine root decomposition. This cumulative evidence will provide information on temporal and spatial dynamics of forest ecosystems, and will determine how logging and reforestation affect fine root decomposition.
Collapse
Affiliation(s)
- Sudipta Saha
- College of Forestry, Northeast Forestry University, Harbin, China
| | - Lei Huang
- College of Forestry, Northeast Forestry University, Harbin, China
| | - Muneer Ahmed Khoso
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, Department of Life Science, Northeast Forestry University, Harbin, China
| | - Haibo Wu
- College of Forestry, Northeast Forestry University, Harbin, China
- Key Laboratory of Sustainable Forest Ecosystem Management, Ministry of Education, Northeast Forestry University, Harbin, China
| | - Donghui Han
- College of Forestry, Northeast Forestry University, Harbin, China
| | - Xiao Ma
- College of Forestry, Northeast Forestry University, Harbin, China
| | - Tika Ram Poudel
- Feline Research Center of National Forestry and Grassland Administration, College of Wildlife and Protected Area, Northeast Forestry University, Harbin, China
| | - Bei Li
- College of Forestry, Northeast Forestry University, Harbin, China
| | - Meiru Zhu
- College of Forestry, Northeast Forestry University, Harbin, China
| | - Qiurui Lan
- College of Forestry, Northeast Forestry University, Harbin, China
| | - Nazmus Sakib
- College of Forestry, Northeast Forestry University, Harbin, China
| | - Ruxiao Wei
- College of Forestry, Northeast Forestry University, Harbin, China
| | - Md. Zahirul Islam
- Key Laboratory of Sustainable Forest Ecosystem Management, Ministry of Education, Northeast Forestry University, Harbin, China
| | - Peng Zhang
- College of Forestry, Northeast Forestry University, Harbin, China
- Key Laboratory of Sustainable Forest Ecosystem Management, Ministry of Education, Northeast Forestry University, Harbin, China
| | - Hailong Shen
- College of Forestry, Northeast Forestry University, Harbin, China
- State Forestry and Grassland Administration Engineering Technology Research Center of Korean Pine, Harbin, China
| |
Collapse
|
2
|
Seeber J, Tasser E, Rubatscher D, Loacker I, Lavorel S, Robson TM, Balzarolo M, Altimir N, Drösler M, Vescovo L, Gamper S, Barančok P, Staszewski T, Wohlfahrt G, Cernusca A, Sebastia MT, Tappeiner U, Bahn M. Effects of land use and climate on carbon and nitrogen pool partitioning in European mountain grasslands. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 822:153380. [PMID: 35077786 DOI: 10.1016/j.scitotenv.2022.153380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 01/20/2022] [Accepted: 01/20/2022] [Indexed: 05/08/2023]
Abstract
European mountain grasslands are increasingly affected by land-use changes and climate, which have been suggested to exert important controls on grassland carbon (C) and nitrogen (N) pools. However, so far there has been no synthetic study on whether and how land-use changes and climate interactively affect the partitioning of these pools amongst the different grassland compartments. We analyzed the partitioning of C and N pools of 36 European mountain grasslands differing in land-use and climate with respect to above- and belowground phytomass, litter and topsoil (top 23 cm). We found that a reduction of management intensity and the abandonment of hay meadows and pastures increased above-ground phytomass, root mass and litter as well as their respective C and N pools, concurrently decreasing the fractional contribution of the topsoil to the total organic carbon pool. These changes were strongly driven by the cessation of cutting and grazing, a shift in plant functional groups and a related reduction in litter quality. Across all grasslands studied, variation in the impact of land management on the topsoil N pool and C/N-ratio were mainly explained by soil clay content combined with pH. Across the grasslands, below-ground phytomass as well as phytomass- and litter C concentrations were inversely related to the mean annual temperature; furthermore, C/N-ratios of phytomass and litter increased with decreasing mean annual precipitation. Within the topsoil compartment, C concentrations decreased from colder to warmer sites, and increased with increasing precipitation. Climate generally influenced effects of land use on C and N pools mainly through mean annual temperature and less through mean annual precipitation. We conclude that site-specific conditions need to be considered for understanding the effects of land use and of current and future climate changes on grassland C and N pools.
Collapse
Affiliation(s)
- Julia Seeber
- Department of Ecology, University of Innsbruck, Sternwartestrasse 15, 6020 Innsbruck, Austria; Institute for Alpine Environment, Eurac Research, Drususallee 1, 39100 Bozen/Bolzano, Italy
| | - Erich Tasser
- Institute for Alpine Environment, Eurac Research, Drususallee 1, 39100 Bozen/Bolzano, Italy
| | - Dagmar Rubatscher
- Department of Ecology, University of Innsbruck, Sternwartestrasse 15, 6020 Innsbruck, Austria
| | - Ingrid Loacker
- Department of Ecology, University of Innsbruck, Sternwartestrasse 15, 6020 Innsbruck, Austria
| | - Sandra Lavorel
- Laboratoire d'Ecologie Alpine, CNRS, Université Grenoble Alpes, Université Savoie-Mont Blanc, 38000 Grenoble, France
| | - T Matthew Robson
- Organismal and Evolutionary Biology, Viikki Plant Science Centre (ViPS), University of Helsinki, 00014 Helsinki, Finland
| | - Manuela Balzarolo
- PLECO (Plants and Ecosystems), Department of Biology, University of Antwerp, 2610 Wilrijk, Belgium
| | - Nuria Altimir
- Laboratory of Functional Ecology and Global Change (ECOFUN), Forest Sciences Centre of Catalonia (CTFC), Solsona, Spain; Institute for Atmospheric and Earth System Research (INAR), University of Helsinki, 00014 Helsinki, Finland
| | - Matthias Drösler
- Institute of Ecology and Landscape University of Applied Sciences Weihenstephan-Triesdorf Am Hofgarten 1, 85354 Freising, Germany
| | - Loris Vescovo
- Sustainable ecosystems & bioresources department, Research and Innovation Center, Fondazione Edmund Mach, San Michele all'Adige 38010, TN, Italy
| | - Sonja Gamper
- Department of Ecology, University of Innsbruck, Sternwartestrasse 15, 6020 Innsbruck, Austria
| | - Peter Barančok
- Institute of Landscape Ecology, Slovak Academy of Sciences, Štefánikova 3, P.O.Box 254, 814 99 Bratislava, Slovakia
| | - Tomasz Staszewski
- Institute for Ecology of Industrial Areas, 6 Kossutha St., 40-844 Katowice, Poland
| | - Georg Wohlfahrt
- Department of Ecology, University of Innsbruck, Sternwartestrasse 15, 6020 Innsbruck, Austria
| | - Alexander Cernusca
- Department of Ecology, University of Innsbruck, Sternwartestrasse 15, 6020 Innsbruck, Austria
| | - M-Teresa Sebastia
- Laboratory of Functional Ecology and Global Change (ECOFUN), Forest Sciences Centre of Catalonia (CTFC), Solsona, Spain; Group GAMES, Department of Horticulture, Botany and Landscaping, School of Agrifood and Forestry Science and Engineering, University of Lleida, Lleida, Spain
| | - Ulrike Tappeiner
- Department of Ecology, University of Innsbruck, Sternwartestrasse 15, 6020 Innsbruck, Austria; Institute for Alpine Environment, Eurac Research, Drususallee 1, 39100 Bozen/Bolzano, Italy
| | - Michael Bahn
- Department of Ecology, University of Innsbruck, Sternwartestrasse 15, 6020 Innsbruck, Austria.
| |
Collapse
|