|Table of Contents|

Carbon，Nitrogen and Phosphorus Stoichiometry of Caragana korshinskii Shrub Under Different Ages in the Typical Desert Steppe

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2023年04
Page:
71-78
Research Field:
Publishing date:

Info

Title:
Carbon，Nitrogen and Phosphorus Stoichiometry of Caragana korshinskii Shrub Under Different Ages in the Typical Desert Steppe
Author(s):
YAN Li; WANG Lei; ZHANG Yichao
(College of Forestry，Inner Mongolia Agricultural University，Hohhot，Inner Mongolia 010019)
Keywords:
Caragana korshinskii Kom.; carbon; nitrogen and phosphorus; stoichiometric characteristics; stand age
PACS:
-
DOI:
10.11937/bfyy.20222124
Abstract:
Taking different ages (3,5,7,and 10 years) of Caragana Korshinskii shrub in a typical desert grassland area of Chahar as test materials,the effects of age on the stoichiometry of carbon,nitrogen and phosphorus of caragana Korshinskii leaves,branches,and grass growing under shrubs were studied by using the method of space instead of time.The ecological stoichiometric characteristics of C,N,P of Caragana korshinskii were investigated, in order to provide reference for plant nutrient balance in desert areas and vegetation restoration in desert areas.The results showed that,1) the C,N,and P contents of Caragana korshinskii leaves,branches,and grass growing under shrubs showed different trends with the increase of stand age,but all reached the maximum value at 10 years of stand age.2) With the extension of stand age,C/N,C/P,and N/P in leaves,branches and grass growing under shrubs of Caragana korshinskii decreased,and the plants in the study area were limited by P.3) The C,N,P storage of Caragana korshinskii and grass growing under shrub significantly increased with the extension of stand age,and all reached the maximum value in the 10th year.4) The C,N,and P storage of Caragana korshinskii branches,leaves,and grass growing under shrubs were significantly positively correlated despite stand ages.To sum up,The prolongation of stand age increased the carbon,nitrogen and phosphorus reserves of plants,and the appropriate increase of stand age was beneficial to improve the stoichiometric balance and nutrient levels of shrub and grass plants.

References:

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Last Update: 2023-03-21