连栽杨树人工林碳储量变化

Carbon Storage Variation of Continuous Planting Popular Plantation

摘要:

摘要：为研究连栽杨树人工林林木和土壤碳储量变化规律，了解杨树人工林碳汇能力，笔者对江汉平原1代和2代杨树人工林的林木生物量和碳储量、土壤碳含量和碳储量进行了测定，结果表明：1代和2代杨树人工林林木碳储量分别为30.83 t/hm2和24.63 t/hm2；土壤碳储量（0～20 cm）分别为39.29 t/hm2和29.09 t/hm2；与第1代林相比，2代林总碳储量下降23.39%。土壤有机碳储量与速效K、磷酸酶、脲酶和蔗糖酶呈显著正相关；与全N和速效N含量呈极显著正相关。

Abstract:

Abstracts:In order to study variation of tree and soil carbon storage of continuous popular plantation, and understand the carbon sink capacity of popular plantation, the tree biomass and carbon storage, soil carbon content and storage of first and second generation popular plantation were measured in Jianghan Plain by authors. The results indicated that tree carbon storage of first and second generation popular plantation were 30.83 t/hm2 and 24.63 t/hm2, soil carbon storage (0～20 cm) were 39.29 t/hm2 and 29.09 t/hm2. The total carbon storage of second generation popular plantation decrease 23.39%,compared with first generation popular plantation. There was significant positive correlation between soil carbon storage and available K, phosphataese, urease and sucrase. And the soil carbon storage was high significantly positive correlated with total N and available N.