Variation in foliar δ15N among oriental oak (Quercus variabilis) stands over eastern China: Patterns and interactions

Kang, Hongzhang; Liu, Chunjiang; Yu, Wenjuan; Wu, Lili; Chen, Dongmei; Sun, Xiao; Ma, Xiaoping; Hu, Haibo; Zhu, Xiaobing

doi:10.1016/j.gexplo.2011.02.002

Cited by 19 publications

(12 citation statements)

References 35 publications

(74 reference statements)

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“…Differences due to plant species appear to be small in eastern China. The range of foliage δ 15 N was 5.1‰ in our study, while the range of foliage δ 15 N for a single tree species was also 5.0‰ in a narrower region in eastern China 14 .…”

Section: Discussionsupporting

confidence: 40%

“…For example, negative foliage δ 15 N data are found in the tropical rainforests of China and Malaysia1213. Furthermore, both positive14 and negative8 relationships are found between plant δ 15 N and MAT and MAP in regional studies of eastern Asia. Because of the influence of the eastern Asian monsoon, the climate differs from that in Europe and North America, with apparent latitudinal gradients of temperature and precipitation are found along the North–South Transect of Eastern China (NSTEC)15.…”

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confidence: 99%

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Regional patterns of 15N natural abundance in forest ecosystems along a large transect in eastern China

Sheng

Fang

et al. 2014

Sci Rep

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The regional determining factors underlying inter- and intra-site variation of 15N natural abundance in foliage, O horizon and mineral soil were investigated in eastern China.15N natural abundance values for these forest ecosystems were in the middle of the range of values previously found for global forest ecosystems. In contrast to commonly reported global patterns, temperate forest ecosystems were significantly more15N-enriched than tropical forest ecosystems, and foliage δ15N was negatively correlated with increasing mean annual temperature and net soil N mineralisation in eastern China. Tight N cycling in forest ecosystems and the use of atmospheric N deposition by trees might underlie the δ15N distribution patterns in eastern China. The existence of mycorrhizal fungi and root distribution profiles in the soil may also influence the15N natural abundance patterns in forest ecosystems of eastern China.

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Section: Discussionsupporting

confidence: 40%

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confidence: 99%

Regional patterns of 15N natural abundance in forest ecosystems along a large transect in eastern China

Sheng

Fang

et al. 2014

Sci Rep

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“…In addition, leaf δ 15 N in trees were not more enriched than in shrubs at their corresponding upper limits (i.e., treeline and shrubline), although the shrublines are higher than the treelines. It has been suggested that higher leaf N concentrations tend to higher leaf δ 15 N [48,49]. For instance, from the synthesis of the global patterns of N isotope compositions, a large proportion of the variation in leaf δ 15 N was explained by leaf N concentrations, although only occurring above a mean annual temperature (MAT) of −0.5 • C [11].…”

Section: Variation Of δ 15 N and N Between Life Formsmentioning

confidence: 99%

Leaf and Soil δ15N Patterns Along Elevational Gradients at Both Treelines and Shrublines in Three Different Climate Zones

Wang

Jiang

Ren

et al. 2019

Forests

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The natural abundance of stable nitrogen (N) isotope (δ15N) in plants and soils can reflect N cycling processes in ecosystems. However, we still do not fully understand patterns of plant and soil δ15N at alpine treelines and shrublines in different climate zones. We measured δ15N and N concentration in leaves of trees and shrubs and also in soils along elevational gradients from lower altitudes to the upper limits of treelines and shrublines in subtropical, dry- and wet-temperate regions in China. The patterns of leaf δ15N in trees and shrubs in response to altitude changes were consistent, with lower values occurring at higher altitude in all three climate zones, but such patterns did not exist for leaf Δδ15N and soil δ15N. Average δ15N values of leaves (−1.2‰) and soils (5.6‰) in the subtropical region were significantly higher than those in the two temperate regions (−3.4‰ and 3.2‰, respectively). Significant higher δ15N values in subtro4pical forest compared with temperate forests prove that N cycles are more open in warm regions. The different responses of leaf and soil δ15N to altitude indicate complex mechanisms of soil biogeochemical process and N sources uptake with environmental variations.

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“…The typical climate of this region is humid subtropical monsoon with a mean annual temperature of 16.5°C and a mean annual rainfall of 1421 mm. The soil type of the studied forest stands was classified as ultisols with a loamy texture [28].…”

Section: Study Sitementioning

confidence: 99%

Prolonging Rotation of Chinese Fir to over 25 Years Could Maintain a Better Soil Status in Subtropical China

Miao

Kang

et al. 2019

Forests

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Although Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) is an important species for wood production in subtropical China, it serious declines in soil nutrients and timber productivity in plantations have been reported, probably caused by successive rotation and inappropriate cutting time. Although the significant effect of stand age on soil properties has been widely recognized, research on soil enzymes and microbial communities is relatively rare. In this study, assuming that short rotation period is one important reason for soil degradation, we measured soil physicochemical properties, microbial community composition, and enzyme activity in 3-, 15-, 25- and 45-year Chinese fir forests in Jiangxi province of China. Soil organic carbon (SOC) content decreased from 3-year to 25-year stands and then increased in 45-year stands. Despite the significant relationship between SOC and the abundance of total phospholipid fatty acids (PLFAs), no notable changes in the abundance of PLFAs were detected with increasing tree ages, except for the abundances of arbuscular mycorrhizal fungi (AMF) which were significantly higher in 25-year stands. However, the ratios of gram-positive to gram-negative bacteria (G+/G−) and fungi to bacteria (F/B) both decreased with increasing stand age. 45-year stands showed the highest activities of both phosphatase and β-glucosidase. Total potassium (TK) content and net N mineralization rate both had significant links with soil microbial community structure. Collectively, our study emphasized that stand age could significantly affect soil physicochemical properties and the microbial community. In general, 25-year stands showed poorer soil status compared to that of 45-year stands. Thus, the cutting age of Chinese fir should be increased to over 25 years to maintain a better soil status.

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Variation in foliar δ15N among oriental oak (Quercus variabilis) stands over eastern China: Patterns and interactions

Cited by 19 publications

References 35 publications

Regional patterns of 15N natural abundance in forest ecosystems along a large transect in eastern China

Regional patterns of 15N natural abundance in forest ecosystems along a large transect in eastern China

Leaf and Soil δ15N Patterns Along Elevational Gradients at Both Treelines and Shrublines in Three Different Climate Zones

Prolonging Rotation of Chinese Fir to over 25 Years Could Maintain a Better Soil Status in Subtropical China

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