岩溶区不同石漠等级土壤-凋落物-植物生态化学计量特征

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中图分类号：TQ127.1 文献标志码：A文章编号：1001-5922（2025）06-0116-04

Abstract：In order to study the ecological stoichiometric characteristics of soil-litter-plant carbon，nitrogen and phosphorus in different rocky desert grades in karst area， the C，N，P and C/N，C / P，N/P ecological stoichiometric ratios of soil， litter and plant in different rocky desert grades were analyzed，and the correlation between soil，litter， plant C，N，P，C/N，C/F and N/P was studied. The results show that the average values of c，N and P elements in karst area are 36.43g/kg ， 1.42g/kg and 1.205g/kg ，respectively. Correlation analysis showed that soil carbon-nitro⁃ gen ratio was significantly negatively correlated with soil phosphorus， litter carbon-nitrogen ratio was significantly negatively correlated with litter nitrogen，litter carbon-phosphorus ratio was significantly negatively correlated with soil phosphorus，and was significantly positively correlated with soil carbon-nitrogen ratio. In summary，nitrogen fer⁃ tilizer can be appropriately sown in moderate rocky desertification areas，which can not only accelerate plant growth，but also increase the decomposition rate of litter and soil，and provide guarantee for vegetation restoration in karst rocky desertification areas.

Key words：karst area；different rocky desert grades；ecological stoichiometry

近年来，岩溶生态化学计量学领域的研究取得了显著进展[1]，张紫霞等[2]研究发现不同类型岩溶湿地表层沉积物C/N-S、C/P-S和N/P-S在不同时期变化规律呈上升趋势。（剩余6046字）