[1]QIAO Yuning,DONG Congguo,HUANG Min,et al.Ecological Stoichiometric Characteristics of Robinia pseudoacacia in Different Vegetation Zones on the Loess Plateau[J].Research of Soil and Water Conservation,2020,27(04):31-38,46.
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Ecological Stoichiometric Characteristics of Robinia pseudoacacia in Different Vegetation Zones on the Loess Plateau
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 04
Page number:
31-38,46
Column:
目次
Public date:
2020-06-20
- Title:
- Ecological Stoichiometric Characteristics of Robinia pseudoacacia in Different Vegetation Zones on the Loess Plateau
- Keywords:
- ecological stoichiometry; vegetation zone; Robinia pseudoacacia plantation; leaf-litter-soil system; climatic factors
- CLC:
- S792.27; S714.8
- DOI:
- -
- Abstract:
- To understand stoichiometric characteristics of Robinia pseudoacacia plantation in different vegetation zones, clarify the impact of climatic factors, forest, forest steppe and steppe zones on the Loess Plateau were selected to study C, N and P contents of the leaf, litter and soil of Robinia pseudoacacia plantation and analyze stoichiometric ratios by combining field investigations and laboratory analyses, meanwhile, analyze the relationship between climatic factors and various elements. The results show that:(1)there are significant differences in contents of C, N and P of different components, and the contents decreases in the order: leaf>litter>soil; in addition, the nutrients of each vegetation zone are different, among which the nutrient contents of leaf and soil in forest & steppe zone are the highest level;(2)in the same vegetation zone, C/P and N/P of leaf and litter are significantly higher than those of the soil, and stoichiometric ratios of components in different vegetation zones are different;(3)the nutrient contents of each vegetation zone have a certain correlation between leaf, litter and soil, indicating that nutrient continues to flow in the ecosystem;(4)contents of C, N and P of leaf decrease with the increase of annual precipitation(MAP)and annual average temperature(MAT), litter is on the contrary, nutrient contents show the significant positive correlation with MAP and MAT, respectively, while litter presents the opposite trend, and soil nutrients decrease with the increase of annual average solar radiation. These results can provide the reference for exploring the spatial coupling mechanism of the nutrient of Robinia pseudoacacia plantation on the Loess Plateau.
- References:
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Last Update:
2020-07-09