[1]ZHANG Xinying,NING Qiurui,LI Shouzhong,et al.Stoichiometric Characteristics of Pinus massoniana Plantation in the Subtropical Red Soil Erosion Region[J].Research of Soil and Water Conservation,2017,24(02):156-161.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 02
Page number:
156-161
Column:
Public date:
2017-04-28
- Title:
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Stoichiometric Characteristics of Pinus massoniana Plantation in the Subtropical Red Soil Erosion Region
- Author(s):
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ZHANG Xinying1, NING Qiurui1,2, LI Shouzhong1,2, JIANG Liangchao1,2, LIU Rong1, ZHANG Haoze1, TAO Jingjing1
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1. School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;
2. Cultivation Base of State Key Laboratory of Humid Subtropical Mountain Ecology, Fuzhou 350007, China
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- Keywords:
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Pinus massoniana; leaf age; stoichiometric characteristics; subtropical
- CLC:
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S718.5
- DOI:
-
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- Abstract:
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In order to understand the distribution pattern of carbon (C), nitrogen (N), phosphorus (P) and the stoichiometric characteristics of Pinus massoniana in the the erosion-prone areas, we selected needles of four different ages from a masson pine plantation (12 sampling sites), and analyzed their C:N:P contents and characteristics of C:N:P stoichiometry. The results showed that the average contents of C, N and P in leaves ranged from 482.15±9.35 to 512.7±6.56 mg/g, from 7.35±0.75 to 10.49±1.34 mg/g, and from 0.21±0.04 to 0.71±0.21 mg/g, respectively. With an increase of needle age, the C content increased slowly and the coefficient of variation was 2.8%, the N, P contents decreased significantly(p < 0.05). Leaf age had the significant impact on the C, N, and P contents. Ratios of N to P ranged from 15.42±3.08 to 36.43±8.08. The ratio of N to P increased gradually with the increase of leaf age. In the region where masson pine was more severely limited in P, leaf age was correlated with the change of nutrient limiting factors. While the P content was positively correlated with N content in the needles of Pinus massoniana, there was the significant negative correlation between C and P contents. The synergy changes between N and P contents were significant. This study on C, N, P stoichiometry and its variation in the pine needles of different ages provided the theoretical basis for the better understanding of the nutrient utilization characteristics and mechanisms in the pioneer plants in areas subject to water and soil losses.