基于Meta分析贵州喀斯特森林植物叶片营养元素特征

Characteristics of Nutrient Elements in Plant Leaves at Karst Forest of Guizhou Province Based on Meta-analysis

[目的]全面分析喀斯特森林植物叶片营养元素特征,为喀斯特生境植被恢复和石漠化治理提供理论依据。[方法]以现有文献为基础,采用Meta分析方法分析贵州喀斯特森林植物叶片营养元素含量特征。[结果]在贵州喀斯特植物中,营养元素的变化从Cu(0.018 g/kg)到Ca(28.28 g/kg),黄色石灰土生境中植物叶片的N、K显著高于黑色石灰土;低坡位生境下的植物叶片Ca、K含量显著高于高坡位,原生林的植物叶片N、K含量显著低于次生林和人工林;相反,原生林中植物叶片的P含量显著高于次生林。[结论]贵州喀斯特地区森林植物叶片营养元素含量存在多样性,相关研究主要集中在树木等功能群中,今后需要加大对苔藓、蕨类和草本植物营养元素的相关研究。

[Objective]The characteristics of nutrient elements in plant leaves at Karst forest were comprehensively analyzed to provide theoretical basis for vegetation restoration and rocky desertification management in Karst habitat.[Method]The contents of nutrient elements in plant leaves at karst forest were analyzed by Meta-analysis based on the published articles with Karst forest.[Result]The contents of nutrients ranged from copper(0.018 g/kg) to calcium(28.28 g/kg),and contents of nitrogen and potassium in plants leaves grown in yellow lime soil were significantly higher than those grown in black lime soil.The contents of calcium and potassium in plants leaves grown lower slopes were significantly higher than that grown higher slopes,and the contents of nitrogen and potassium in plants leaves grown in old-forests were significantly lower than that grown in secondary-forests and plantations.In contrast,the contents of phosphorus in plants leaves grown in primary-forests were significantly higher than that grown in secondary-forests.[Conclusion]The contents of nutrient elements in the leaves at Guizhou Karst area were variation.Most research mainly focused on the tree functional groups.In the future,more research should be conducted on the mosses,ferns and herbs.