|Table of Contents|

Effects of Alnus cremastogyne-Cupressus funebris strip reform on soil C:N:P stoichiometry of Cupressus funebris forests in a hilly area of central Sichuan Basin(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

2020 02
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Effects of Alnus cremastogyne-Cupressus funebris strip reform on soil C:N:P stoichiometry of Cupressus funebris forests in a hilly area of central Sichuan Basin
WU Lijun1 LI Weizhong2 XUE Wei2 YANG Yulian1 LIN Hao1 & WU Qinggui1 2?
1 Ecological Security and Protection Key Laboratory of Sichuan Province, Mianyang Normal University, Mianyang 621000, China 2 College of Forestry, Northwest A&F University, Yangling 712100, China
Cupressus funebris reconstruction of low-benefit stands C:N:P stoichiometry water-holding capacity central Sichuan hilly region

The high-density Cupressus funebris protected forest in the central Sichuan hilly region is characterized by a single forest structure, degraded soil fertility, and low biodiversity. To determine the effects of strip reform on the soil physical properties and distribution patterns of soil carbon (C), nitrogen (N), and phosphorus (P), a typical sampling method was used to analyze the soil physical properties, organic carbon (OC), total nitrogen (TN), total phosphorus (TP), and C:N:P ecological stoichiometry from 0–20 cm (M1) and 20–40 cm (M2) depths in pure C. funebris forest and mixed plantations with Alnus cremastogyne and C. funebris by strip reform. The results showed that strip reform increased OC by 46.80% in M1 and 77.01% in M2 and decreased TP by 67.98% in M1 and 60.20% in M2. There was no significant difference in TN for both M1 and M2 after strip reform, whereas the soil C:N, C:P, N:P, total porosity, capillary porosity, natural water content, and maximum water-holding capacity in both M1 and M2 were increased after the strip reform treatment. With the deepening soil layer, in the plantation with strip reform, soil OC, TN, C:P, N:P, and maximum water-holding capacity decreased significantly; C:N and bulk density increased significantly; and TP showed no significant change. In contrast, soil OC, TN, and TP significantly decreased with the deepening soil layer, whereas there was no significant changes in C:N:P, bulk density, total porosity, capillary porosity, non-capillary porosity, natural water content, and maximum water capacity in the pure C. funebris forest. In addition, after strip reform, the effects of soil bulk density, porosity, and maximum water-holding capacity on C, N, and P content and the stoichiometric ratio was weakened and intensified the restriction of P in the topsoil. Therefore, it is better to apply phosphate fertilizer in the mixed plantation after strip reform to alleviate the lack of element P in situ.


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Last Update: 2020-04-25