Distribution of soil carbon and nitrogen in two typical forests in the semiarid region of the Loess Plateau, China

Song, B. Y.; Yan, Mengying; Hou, Hao; Guan, Jiunian; Shi, Weiyu; Li, Guoqing; Du, Sheng

doi:10.1016/j.catena.2016.04.004

Cited by 47 publications

(17 citation statements)

References 42 publications

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“…This may be due to the high stand density (2,830 ± 256 plants ha −1 ) of the P. tabulaeformis plantation, which could maximize tree and litter biomass. The SOC contents in this study were also lower than those found Song et al’s (2016) study which was conducted in the northern Loess Plateau with loess soil in two near-mature forest types. This result suggests that SOC contents are subject to large variations and tend to increase with developing years.…”

Section: Discussioncontrasting

confidence: 84%

“…These trends are consistent with other studies (Zhang et al, 2010; Li & Shao, 2014). The SOC storage in the 0–100 cm soil layer of the two plantations at different ages was similar to the estimates of 88.97 and 71.41 Mg ha −1 for Quercus and R. pseudoacacia forests of the approximate stand age on the Loess Plateau (Song et al, 2016). Moreover, our estimates were higher than the results of 26.3 Mg ha −1 for woodland in the semiarid catchment of the Loess Plateau, lying north of our site with a dryer climate (Li et al, 2013).…”

Section: Discussionsupporting

confidence: 74%

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Dynamics of carbon and nitrogen storage in two typical plantation ecosystems of different stand ages on the Loess Plateau of China

Wang

Liu

Feixue

et al. 2019

PeerJ

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In China’s Loess Plateau, afforestation and reforestation are considered the foremost practices for sequestering carbon and conserving soil and water. In order to evaluate the carbon storage changes of tree, soil, and litter, and the soil total nitrogen (STN) in two typical artificial forests in the region, we conducted plot surveys for different ages of both artificial forest types. Soil samples were collected at different depths from 0–100 cm. The results indicated that forest ecosystem carbon storage increased with tree development. The rates of mean annual carbon sequestration of Pinus tabulaeformis and Robinia pseudoacacia plantation ecosystems were 3.31 and 3.53 Mg ha−1 year−1, respectively. The rate of mean annual carbon sequestration of R. pseudoacacia plantation ecosystems was higher by 6.65% than that of P. tabulaeformis plantation ecosystems. The soil organic carbon (SOC) and STN decreased at deeper soil depths in both plantations at different stand ages, significantly decreasing in the 0–60 cm of soil (P < 0.05), and the highest SOC content and storage were in the top 0–20 cm of soil. The temporal patterns for SOC and STN changes at different soil sampling depths from 0 to 100 cm all showed an initial decrease during the early stage of restoration, and then an increase that coincided with the development of the two plantation forests. At 0–100 cm depth, the SOC storage was in the range of 40.95–106.79 and 45.13–113.61 Mg ha−1 for the P. tabulaeformis forest and R. pseudoacacia forest, respectively. The STN storage in the 0–100 cm soil layer with the stand age development ranged from 4.16 to 8.34 Mg ha−1 in the R. pseudoacacia plantation and 4.19–7.55 Mg ha−1 in the P. tabulaeformis forest. The results showed a significant positive correlation between SOC and STN. This study suggests that we should pay more attention to changes in soil carbon and nitrogen sequestration during long-term vegetation restoration.

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Section: Discussioncontrasting

confidence: 84%

Section: Discussionsupporting

confidence: 74%

Dynamics of carbon and nitrogen storage in two typical plantation ecosystems of different stand ages on the Loess Plateau of China

Wang

Liu

Feixue

et al. 2019

PeerJ

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“…The ability to store carbon and the rate of accumulation and supply of N and P that limit plant growth are closely associated 16 . The stoichiometries of C, N, and P are powerful tools for determining their coupling mechanisms and nutrient limitations in terrestrial ecosystems, and numerous studies have reported the individual stoichiometries for leaves, litter, and soil 11 , 17 – 20 . However, the potential nutrient cycles of the C, N, and P stoichiometries in the leaf-litter-soil system are far from complete, and the coupling relationships among leaf, litter, and soil remain poorly understood.…”

Section: Introductionmentioning

confidence: 99%

The coupling of leaf, litter, and soil nutrients in warm temperate forests in northwestern China

Zhang

Peng

et al. 2017

Sci Rep

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The nutrient ecological stoichiometry of plants and soil is important for the growth and dynamics of species, but the stoichiometric relationships among leaf, litter, and soil remain poorly understood. We analyzed the carbon (C), nitrogen (N), and phosphorus (P) stoichiometry of the leaves, litter, and soil for 31 species at 140 sites in warm temperate forests in northwestern China to document the patterns of nutrient traits and their relationships with climatic factors. The average concentrations of C, N, and P in the combined forests were 462.97, 18.04, and 1.32 g kg−1 for leaves, 365.12, 12.34, and 0.87 g kg−1 for litter, and 15.72, 1.29, and 0.54 g kg−1 for soil, respectively. The concentrations differed significantly among the leaves, litter, and soil. Leaf and soil nutrients were not significantly correlated, whereas leaf and litter nutrients and litter and soil nutrients were significantly correlated, indicating that litter provided a link between leaves and soil and demonstrating the nutrient associations among leaves, litter, and soil. Soil nutrients were strongly correlated with climatic factors, and precipitation had a larger impact than temperature on the plants and soil. This study will help to predict the growth and dynamics of species under environmental changes.

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“…Liaodong oak (Quercus liaotungensis) and Chinese pine (Pinus tabulaeformis) are widely distributed in northern China (Zhao and Zhou 2006;Wang and Zhang 2011), and both tree species have important ecological functions, such as soil and water conservation and carbon sequestration (Guo et al 2008;Cao et al 2012;Song et al 2016). In addition, Chinese pine is also an important timber species.…”

Section: Introductionmentioning

confidence: 99%

Mixing effect on stand yield ofPinus tabulaeformisandQuercus liaotungensisis modulated by site quality and stand density in the Loess Plateau, China

Xiaozhou

Zhang

2020

Journal of Plant Interactions

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Interactions between plants are complicated: they can change resource availability, the proportion of resources acquired and the efficiency of resource use. This can eventually lead to changes in stand yield, but the driving mechanisms remain controversial. This study aimed to clarify the effects of mixing on stand yield. We established 120 mixed and pure plots of Chinese pine (Pinus tabulaeformis) and Liaodong oak (Quercus liaotungensis) in the Loess Plateau, China. Based on the inventory data in 2009 and 2016, we compared the differences in yields between mixed and pure stands. Our results indicated that the mixing of pine and oak resulted in over-yielding, but there was no transgressive over-yielding and pure pine stands consistently produced the highest yields. The over-yielding was due to facilitation between pine and oak, especially the improvement of light conditions in the understory, and an increase in the light use-efficiency of young pine and the availability of light to young oak. Mixing did not reduce competition: pine was dominant in interspecific competition and inhibited the growth of oak. The mixing effect was affected by site quality and stand density: improvements in site quality reduced over-yielding, while increases in stand density increased over-yielding.

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Distribution of soil carbon and nitrogen in two typical forests in the semiarid region of the Loess Plateau, China

Cited by 47 publications

References 42 publications

Dynamics of carbon and nitrogen storage in two typical plantation ecosystems of different stand ages on the Loess Plateau of China

Dynamics of carbon and nitrogen storage in two typical plantation ecosystems of different stand ages on the Loess Plateau of China

The coupling of leaf, litter, and soil nutrients in warm temperate forests in northwestern China

Mixing effect on stand yield ofPinus tabulaeformisandQuercus liaotungensisis modulated by site quality and stand density in the Loess Plateau, China

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