Leaf litter carbon, nitrogen and phosphorus stoichiometry of Chinese fir (Cunninghamia lanceolata) across China

Tong, Ran; Zhou, Benzhi; Jiang, Lina; Ge, Xiaogai; Cao, Yong; Shi, Jiuxi

doi:10.1016/j.gecco.2021.e01542

Cited by 19 publications

(16 citation statements)

References 46 publications

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“…Litter C:N and C:P can also reflect the supply of N and P in the soil [14,46]. Studies have shown that there a critical value for nutrient release in the litter.…”

Section: Stoichiometric Characteristics Of Forest Ecosystem In Daiyun...mentioning

confidence: 99%

C:N:P Stoichiometry of Plant, Litter and Soil along an Elevational Gradient in Subtropical Forests of China

Chen

Jiang

et al. 2022

Forests

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The internal correlation of plant, litter and soil stoichiometric characteristics and their responses to the environment are helpful for revealing nutrient cycling mechanisms. However, few studies have assessed the nutrient relationship between plant, litter and soil and nutrient stock along elevational gradients, which limit the understanding of nutrient relationships in the ecosystem. To gain insight into the forces of nutrient stock and its stoichiometric ecological characteristics along the elevational gradients in forest ecosystem, we investigated the carbon (C), nitrogen (N) phosphorus (P) contents and stoichiometric ratios of dominant plants, litter and soil layers at different elevations (900–1600 m) in Daiyun Mountain. The results showed the following: (1) C, N and P contents showed an increasing order as plant > litter > soil in each elevation of Daiyun Mountain. Dominant plants were limited by N each elevation. C, N and P contents of plants at high elevation were higher than those at low elevation and significant correlations were found between plant and litter TN, TP and air and soil temperature (negative), which conforms to the Temperature-Plant Physiological Hypothesis (TPPH). (2) Significant correlations were found between plant C:N and litter C:N (positive); between litter C:P and soil N:P (positive); and between litter C:P and soil C:N (negative). (3) Elevation and slope were essential environmental factors to the stoichiometric ratio of plant and litter, and pH was the main factor that correlated negatively to soil stoichiometry ratio. Litter provided a link between plant and soil, and there was a coupling among plant, litter and soil nutrients. The results could provide a theoretical basis for understanding the nutrient cycling for the subtropical forest ecosystem of China.

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“…Litter C:N and C:P can also reflect the supply of N and P in the soil [14,46]. Studies have shown that there a critical value for nutrient release in the litter.…”

Section: Stoichiometric Characteristics Of Forest Ecosystem In Daiyun...mentioning

confidence: 99%

C:N:P Stoichiometry of Plant, Litter and Soil along an Elevational Gradient in Subtropical Forests of China

Chen

Jiang

et al. 2022

Forests

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“…In 2019, Chinese fir plantations take up an area of around 10.96 × 10 6 ha in China, which continues to increase with time (Yang et al, 2019). Because of special climatic and geographical conditions, Guangxi has become a Province with the largest planted area of Chinese fir in all of China (Tong et al, 2021). Nonetheless, low productivity of Chinese fir has been a problem for a long time in Guangxi.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of soil aggregate‐related C‐N‐P stoichiometric characteristics with stand age and soil depth in Chinese fir plantations

Tang

Wang

2022

Land Degrad Dev

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Soil C‐N‐P stoichiometry offers an effective way to explore the balance, limitation, cycling, and distribution of chemical elements in Chinese fir plantations. This research aimed to explore how soil organic C (Corg), total N (Ntot), and total P (Ptot) contents and stocks, together with their stoichiometric ratios vary with stand age (3, 9, 17, and 26 years) as well as soil layer (0–10, 10–20, 20–30, and 30–40 cm) at aggregate scales in Chinese fir plantations from Guangxi, China. For Chinese fir plantations of diverse ages, soil aggregate stability, Corg, Ntot, and Ptot contents and stocks, together with C/N, C/P, and N/P ratios, remarkably declined when soil depth increased. Stand age could influence C‐N‐P stoichiometric characteristics in soil, but such effect was more obvious in soil depth of 0–30 cm in comparison to that of 30–40 cm. In 0–30 cm soil layer, Corg and Ntot contents and stocks, together with C/P and N/P ratios, first rose and then reduced during Chinese fir planting; meanwhile, the highest levels could be observed in the 17‐year‐old Chinese fir plantations. However, Ptot content and stock, together with C/N ratio, were not related to the stand age. Overall, the present research helped to understand soil C, N, and P dynamics within a chronosequence of Chinese fir plantations. Also, it provided supplementary information for soil ecological stoichiometry in global terrestrial ecosystems.

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“…Chinese fir plantations, which are considered as one of the most broadly distributed forest types in China (Tong et al 2021), have significantly contributed to the development of the forest economy and the improvement of net primary productivity (Yang et al 2021). In 2019, the area of Chinese fir plantations in China reached 10.96 million ha and this figure has been on the increase continuously over time (Yang et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Distribution of organic carbon fractions in soil aggregates in Chinese fir plantations with different stand ages

Huang

Zhang

et al. 2021

Ecol Process

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Background Revealing the variations in soil aggregate-related organic carbon (OC) and labile organic carbon (LOC) fractions in a chronosequence of Chinese fir plantations plays an important role in better understanding the impact of soil carbon sink or source on the Chinese fir plantation ecosystem. In this study, soil samples in a depth of 0–20 cm were collected from Chinese fir plantations at different stand ages (0, 9, 17, and 26 years old) in Guangxi, China. With the optimal moisture sieving method adopted, the soil aggregates of 4 different sizes were obtained, including > 2-mm, 2–1-mm, 1–0.25-mm, and < 0.25-mm aggregates. Soil OC and LOC fractions were measured in the aggregates of different sizes. The LOC fractions included readily oxidizable carbon (ROC), particulate organic carbon (POC), microbial biomass carbon (MBC), water-soluble organic carbon (WOC), and mineralized organic carbon (MOC). Results Soil aggregate stability, as indicated by the mean weight diameter (MWD), was the highest in the 17-year-old Chinese fir plantations and was significantly positively related (p < 0.05) to the concentrations of OC and LOC fractions (except for the ROC and MOC), with the POC in particular. As for all stand ages of Chinese fir plantations, the concentrations of soil OC and LOC fractions were significantly increased as the aggregate size decreased. Consequently, there were more OC and LOC fractions distributed in the < 0.25-mm aggregates. During the stand development, the concentrations of soil OC and LOC fractions first increased and then decreased, with the highest levels detected in the 17-year-old Chinese fir plantations, indicating that the 17-year-old Chinese fir plantations were conducive to the accumulation of soil OC and LOC fractions. Conclusion After 17 years of planting, promoted soil carbon (especially for the POC) accumulation contributes significantly to enhancing soil aggregate stability for the Chinese fir plantations in Guangxi, China.

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Leaf litter carbon, nitrogen and phosphorus stoichiometry of Chinese fir (Cunninghamia lanceolata) across China

Cited by 19 publications

References 46 publications

C:N:P Stoichiometry of Plant, Litter and Soil along an Elevational Gradient in Subtropical Forests of China

C:N:P Stoichiometry of Plant, Litter and Soil along an Elevational Gradient in Subtropical Forests of China

Dynamics of soil aggregate‐related C‐N‐P stoichiometric characteristics with stand age and soil depth in Chinese fir plantations

Distribution of organic carbon fractions in soil aggregates in Chinese fir plantations with different stand ages

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