Spatial distribution of root biomass of<i>Pinus massoniana</i>plantation in Three Gorges Reservoir area, China

Ruimei, 程瑞梅 Cheng; Ruili, 王瑞丽 Wang; Wenfa, 肖文发 Xiao; Xiaohui, 封晓辉 Feng; Zebin, 刘泽彬 Liu; Xiaogai, 葛晓改 Ge; Xiaorong, 王晓荣 Wang; Weiyin, 张炜银 Zhang

doi:10.5846/stxb201104280561

Cited by 6 publications

(2 citation statements)

References 12 publications

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“…This can be explained by the fact that P. massoniana fine roots (diameter ≤ 2 mm) and their mediated plant P uptake mainly occur in top-soil (< 20 cm) rather than deep-soil (Brandtberg et al 2010;Zhu et al 2021). For example, Cheng et al (2012) reported that P. massoniana roots with diameters ≤ 2 mm and < 1 mm were mainly distributed in the 0 − 20 cm and 0 − 10 cm soil layers, respectively. In addition, the study reported by Yang et al (2021) also highlighted that plant root P uptake during forest stand development resulted in a decrease of soil P concentration in 0 − 20 cm layer but not in 20 − 30 cm layer, which also supported our inference.…”

Section: Top-soil Labile P Storage Decreased More Than That At Deep-s...mentioning

confidence: 99%

The P limitation of Pinus massoniana reforestation increases with stand maturity: Evidence from plants, leaf litter, and soil

Tie,

Peñuelas,

Huang

et al. 2023

Preprint

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Background and Aims : Soil phosphorus (P) regulates plant productivity. However, the medium to long-term time-scale effects of reforestation on the P recycle of plants, litter, and soil continuum, thus regulating soil P storage, especially deep-soil P fractions dynamics, are unclear. Methods We determined soil (0 ~ 100 cm) P fractions, root and leaf N/P ratio, leaf-litter P concentration, and biogeochemical drivers in 32-, 45-, and 60-year-old Pinus massoniana reforestations in southwest China. Results The storages of soil labile, moderately labile, and occluded P in the 45- and 60-year stands were lower than the 32-year stand. The concentrations of NaHCO3-Pi, NaHCO3-Po, and total labile P in top-soil were lower while those in sub- and bottom-soil were not significantly in the 45- and 60-year stands compared to the 32-year stand. The concentrations of all soil layer NaOH-Po and total moderately labile P were lower in the 45- and 60-year stands than the 32-year stand. The concentrations of all soil layers C.HCl-Pi and total occluded P were lower in the 60-year stand than the 32-year stand. The leaf N/P ratio and top-soil C/P ratio and acid phosphatase were higher and the leaf-litter P concentration was lower in the older stands. Conclusions P. massoniana secreted more acid phosphatase and increased leaf P resorption to compensate for the drop in soil P-availability with stand age, which in turn decreased leaf-litter P input and thus resulted in a depletion of soil P. Overall, our results highlighted that P limitation increased with stand maturity in P. massoniana reforestations.

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Section: Top-soil Labile P Storage Decreased More Than That At Deep-s...mentioning

confidence: 99%

The P limitation of Pinus massoniana reforestation increases with stand maturity: Evidence from plants, leaf litter, and soil

Tie,

Peñuelas,

Huang

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…P. massoniana is an important species in southern China and is also the most widely distributed forest type in the Three Gorges Reservoir area [35]. Few studies have investigated the dynamics of the fine roots of P. massoniana under natural or human management conditions in the Three Gorges Reservoir area [19,36]. We hypothesized that thinning will affect the fine root biomass.…”

Section: Introductionmentioning

confidence: 99%

Short-Term Effects of Low Intensity Thinning on the Fine Root Dynamics of Pinus massoniana Plantations in the Three Gorges Reservoir Area, China

Shen

Wang

Cheng

et al. 2017

Forests

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Abstract:Fine roots play an important role in plant growth as well as carbon (C) and nutrient cycling in terrestrial ecosystems. Fine roots are important for understanding the contribution of forests to the global C cycle. Knowledge about this topic is still limited, especially regarding the effects of different forest management practices. This study investigated the seasonal dynamics of fine roots (<2 mm) in masson pine (P. massoniana) plantations for one year after low intensity thinning by using a sequential soil coring method. The fine roots showed pronounced seasonal dynamics, with a peak of fine root biomass (FRB) occurring in September. Significant differences were noted in the seasonal dynamics of FRB for the different diameter size sub-classes (≤0.5 mm, 0.5-1 mm and 1-2 mm); also FRB was inversely related to soil depth. Moreover, the FRB (≤0.5 mm and 0.5-1 mm except 1-2 mm) in the thinning plots was greater than that in the control only in the upper soil layer (0-10 cm). Furthermore, the FRB varied significantly with soil temperature, moisture and nutrients depended on the diameter sub-class considered. Significant differences in the soil temperature and moisture levels were noted between low-intensity thinned and control plots. Soil nutrient levels slightly decreased after low-intensity thinning. In addition, there was a more sensitive relationship between the very fine roots (diameter < 0.5 mm) and soil nutrients. Our results showed an influence of low-intensity thinning on the fine root dynamics with a different magnitude according to fine root diameter sub-classes. These results provide a theoretical basis to promote the benefits of C cycling in the management of P. massoniana forests.

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Phosphorus limitation of Pinus massoniana reforestation increases with stand development: evidence from plant, leaf litter, and soil

Tie,

Peñuelas,

Huang

et al. 2024

Plant Soil

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Spatial distribution of root biomass ofPinus massonianaplantation in Three Gorges Reservoir area, China

Cited by 6 publications

References 12 publications

The P limitation of Pinus massoniana reforestation increases with stand maturity: Evidence from plants, leaf litter, and soil

The P limitation of Pinus massoniana reforestation increases with stand maturity: Evidence from plants, leaf litter, and soil

Short-Term Effects of Low Intensity Thinning on the Fine Root Dynamics of Pinus massoniana Plantations in the Three Gorges Reservoir Area, China

Phosphorus limitation of Pinus massoniana reforestation increases with stand development: evidence from plant, leaf litter, and soil

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