[1]CHEN Hongwu,YANG Chenxu,TANG Lijie.Ecological Stoichiometric Characteristics in Leaf Under Different Vegetation Types of Jungar Banner Opencast Coal Mining Area[J].Research of Soil and Water Conservation,2016,23(06):9-14.
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Ecological Stoichiometric Characteristics in Leaf Under Different Vegetation Types of Jungar Banner Opencast Coal Mining Area
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 06
Page number:
9-14
Column:
Public date:
2016-12-28
- Title:
- Ecological Stoichiometric Characteristics in Leaf Under Different Vegetation Types of Jungar Banner Opencast Coal Mining Area
- CLC:
- Q945.12
- DOI:
- -
- Abstract:
- We characterized the contents and eco-stoichiometric proportions of carbon (C), nitrogen (N) and phosphorus (P) in leaves of three dominant species of plants, i. e. Pinus tabuliformis, Hippophae rhamnoides, Medicago sativa Linn., at different restoration stages in Jungar Banner colliery reclamation area and further to explore relationships of plant homeostasis of degraded ecosystems with vegetation type and NP limiting rate and plant nutrition status in an attempt to provide some reasonable suggestions and references for selection of plants and evaluation of the effect of reclamation of colliery reclamation area. Results showed that the average contents of carbon, nitrogen and phosphorus in leaves of the plants were 488.33,24.87,1.39 g/kg, respectively. The carbon content in the leaves of the three plants increased with the increase of the recovery time, among them, the carbon content of Pinus tabuliformis leaf was significantly higher than that of Hippophae rhamnoides and Medicago sativa Linn.(p < 0.05), the nitrogen content of Hippophae rhamnoides and Medicago sativa Linn. leaf was significantly higher than that of Pinus tabuliformis(p < 0.05).The average values of C:N, C:P and N:P in leaves of the plants were 26.76, 374.72, 18.32, respectively. The three types of vegetation followed an order:shrubbery > forest > grass, indicating that N is the major limiting factor for growth of Pinus tabuliformis, P is the major limiting factor for growth of Hippophae rhamnoides and Medicago sativa Linn.. The nitrogen contents in leaves of the plants were extremely significantly negatively related with the P content, C:N, C:P and N:P ratio(p < 0.01). The findings of this study can help fully further understand rules and mechanisms of the interactions of carbon, nitrogen and phosphorus in different components of the reclamation area in the Jungar Banner colliery.
- References:
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1900-01-01