Decomposition and nutrient dynamics of stumps and coarse roots of Eucalyptus plantations in southern China
Abstract Key message Primary remains of Eucalyptus (E. urophylla × E. grandis) plantations following clear-cutting are the stumps and coarse roots. A chrono-sequence approach revealed that the biomass of coarse roots is higher than that of stumps, while they have a smaller rate of biomass loss than...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
BMC
2023-07-01
|
| Series: | Annals of Forest Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s13595-023-01201-y |
| _version_ | 1797752528378527744 |
|---|---|
| author | Xiangsheng Deng Xiang Liang Lu Shen Haiyu Liu Mei Yang Min Zeng Mengqiang Liang Fei Cheng |
| author_facet | Xiangsheng Deng Xiang Liang Lu Shen Haiyu Liu Mei Yang Min Zeng Mengqiang Liang Fei Cheng |
| author_sort | Xiangsheng Deng |
| collection | DOAJ |
| description | Abstract Key message Primary remains of Eucalyptus (E. urophylla × E. grandis) plantations following clear-cutting are the stumps and coarse roots. A chrono-sequence approach revealed that the biomass of coarse roots is higher than that of stumps, while they have a smaller rate of biomass loss than stumps. This implies that coarse roots serve as long-term stock for nutrients (carbon, nitrogen, and phosphorus). Context A significant quantity of stumps and coarse roots persist in the forest floor following the clear-cutting of Eucalyptus plantations in China. The decomposition of these stumps and coarse roots is a crucial aspect of the nutrient stocks in plantation ecosystems. Aims We described the stock and decomposition dynamics of stumps and coarse roots on Eucalyptus plantations, as well as the nutrient loss rate associated with them. Methods We used a chrono-sequence of 0–6-year-old clear-cutting stands of Eucalyptus plantations in southern China. The biomass and nutrient stocks of these samples were assessed at different times of decomposition. Results The highest biomass of stump-root system was 33.8 Mg·ha−1, with nutrient stocks were 16.3 Mg·ha−1, and 63.0 kg·ha−1, and 6710.9 g·ha−1, for C, N, and P. The coarse roots accounted for 81–96% of the biomass of the stump-root system. The loss rate of biomass and nutrients from stumps was higher than that of coarse roots. This suggests that the decomposition of coarse roots could serve as a long-term source of nutrients, thereby improving the nutrient status of the plantations. Conclusion Stumps and coarse roots serve as significant nutrient stocks that decay at varying rates. The loss of nutrients must be considered while analyzing the decomposition dynamics following clear-cutting in Eucalyptus plantations. |
| first_indexed | 2024-03-12T17:05:45Z |
| format | Article |
| id | doaj.art-196b7e60c0ad42b4bf4a3336570792ee |
| institution | Directory Open Access Journal |
| issn | 1297-966X |
| language | English |
| last_indexed | 2024-03-12T17:05:45Z |
| publishDate | 2023-07-01 |
| publisher | BMC |
| record_format | Article |
| series | Annals of Forest Science |
| spelling | doaj.art-196b7e60c0ad42b4bf4a3336570792ee2023-08-06T11:28:01ZengBMCAnnals of Forest Science1297-966X2023-07-0180111110.1186/s13595-023-01201-yDecomposition and nutrient dynamics of stumps and coarse roots of Eucalyptus plantations in southern ChinaXiangsheng Deng0Xiang Liang1Lu Shen2Haiyu Liu3Mei Yang4Min Zeng5Mengqiang Liang6Fei Cheng7Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi UniversityGuangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi UniversityGuangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi UniversityGuangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi UniversityGuangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi UniversityGuangxi State-Owned GuangMing Mountain Forestry FarmGuangxi State-Owned GuangMing Mountain Forestry FarmGuangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi UniversityAbstract Key message Primary remains of Eucalyptus (E. urophylla × E. grandis) plantations following clear-cutting are the stumps and coarse roots. A chrono-sequence approach revealed that the biomass of coarse roots is higher than that of stumps, while they have a smaller rate of biomass loss than stumps. This implies that coarse roots serve as long-term stock for nutrients (carbon, nitrogen, and phosphorus). Context A significant quantity of stumps and coarse roots persist in the forest floor following the clear-cutting of Eucalyptus plantations in China. The decomposition of these stumps and coarse roots is a crucial aspect of the nutrient stocks in plantation ecosystems. Aims We described the stock and decomposition dynamics of stumps and coarse roots on Eucalyptus plantations, as well as the nutrient loss rate associated with them. Methods We used a chrono-sequence of 0–6-year-old clear-cutting stands of Eucalyptus plantations in southern China. The biomass and nutrient stocks of these samples were assessed at different times of decomposition. Results The highest biomass of stump-root system was 33.8 Mg·ha−1, with nutrient stocks were 16.3 Mg·ha−1, and 63.0 kg·ha−1, and 6710.9 g·ha−1, for C, N, and P. The coarse roots accounted for 81–96% of the biomass of the stump-root system. The loss rate of biomass and nutrients from stumps was higher than that of coarse roots. This suggests that the decomposition of coarse roots could serve as a long-term source of nutrients, thereby improving the nutrient status of the plantations. Conclusion Stumps and coarse roots serve as significant nutrient stocks that decay at varying rates. The loss of nutrients must be considered while analyzing the decomposition dynamics following clear-cutting in Eucalyptus plantations.https://doi.org/10.1186/s13595-023-01201-yStumpsCoarse rootsDecompositionBiomassNutrientStocks |
| spellingShingle | Xiangsheng Deng Xiang Liang Lu Shen Haiyu Liu Mei Yang Min Zeng Mengqiang Liang Fei Cheng Decomposition and nutrient dynamics of stumps and coarse roots of Eucalyptus plantations in southern China Annals of Forest Science Stumps Coarse roots Decomposition Biomass Nutrient Stocks |
| title | Decomposition and nutrient dynamics of stumps and coarse roots of Eucalyptus plantations in southern China |
| title_full | Decomposition and nutrient dynamics of stumps and coarse roots of Eucalyptus plantations in southern China |
| title_fullStr | Decomposition and nutrient dynamics of stumps and coarse roots of Eucalyptus plantations in southern China |
| title_full_unstemmed | Decomposition and nutrient dynamics of stumps and coarse roots of Eucalyptus plantations in southern China |
| title_short | Decomposition and nutrient dynamics of stumps and coarse roots of Eucalyptus plantations in southern China |
| title_sort | decomposition and nutrient dynamics of stumps and coarse roots of eucalyptus plantations in southern china |
| topic | Stumps Coarse roots Decomposition Biomass Nutrient Stocks |
| url | https://doi.org/10.1186/s13595-023-01201-y |
| work_keys_str_mv | AT xiangshengdeng decompositionandnutrientdynamicsofstumpsandcoarserootsofeucalyptusplantationsinsouthernchina AT xiangliang decompositionandnutrientdynamicsofstumpsandcoarserootsofeucalyptusplantationsinsouthernchina AT lushen decompositionandnutrientdynamicsofstumpsandcoarserootsofeucalyptusplantationsinsouthernchina AT haiyuliu decompositionandnutrientdynamicsofstumpsandcoarserootsofeucalyptusplantationsinsouthernchina AT meiyang decompositionandnutrientdynamicsofstumpsandcoarserootsofeucalyptusplantationsinsouthernchina AT minzeng decompositionandnutrientdynamicsofstumpsandcoarserootsofeucalyptusplantationsinsouthernchina AT mengqiangliang decompositionandnutrientdynamicsofstumpsandcoarserootsofeucalyptusplantationsinsouthernchina AT feicheng decompositionandnutrientdynamicsofstumpsandcoarserootsofeucalyptusplantationsinsouthernchina |