花椒不同种植密度下土壤活性有机碳变化规律  

Changes of Soil Active Organic Carbon under Different Planting Densities of Zanthoxylum bungeanum

作　　者：吴富雨 李元会 文嫱 邹德强 王腊梅 刘志斌 贺婷婷 WU Fu-yu;LI Yuan-hui;WEN Qiang(Ganzi Institute of Forestry and Science,Ganzi,Sichuan 623200)

机构地区：[1]四川省甘孜州林业科学研究所,四川甘孜626001 [2]四川省甘孜州康定木材检查站,四川甘孜626000 [3]四川省阿坝州茂县林草局,四川阿坝623200

出　　处：《安徽农业科学》2021年第14期119-121,共3页Journal of Anhui Agricultural Sciences

基　　金：甘孜州地方财政资金项目“花椒病虫害防治技术研究”。

摘　　要：[目的]检验退耕还林工程改造效果,探讨四川省甘孜州地区植树造林和生态恢复对生态系统碳汇/源功能的影响。[方法]以甘孜州泸定县田坝乡种植的花椒地为研究区域,研究退耕还林3年后不同种植密度下(0.5 m×0.5 m、0.5 m×1.0 m、1.0 m×1.0 m)各土层(0~15、15~30、30~45 cm)土壤总有机碳和活性有机碳的含量。[结果]随着土层厚度的增加,上层土壤有机碳和活性有机碳含量最高,中层次之,下层最低;不同种植密度下土壤有机碳和活性有机碳之间有差异均高于对照,且0.5 m×0.5 m种植密度下最大。[结论]高密度种植花椒更有利于区域生态恢复、提升生态系统的碳汇/源功能,并有利于提升其产业价值。[Objective]In order to test the effects of the conversion of farmland to forests and discuss the impact of afforestation and ecological restoration on the carbon sink/source function of the ecosystem in this area.[Method]Taking the prickly ash field planted in Tianba Township,Luding County,Ganzi as the study area,after returning farmland to forest 3 years later,the contents of total organic carbon(TOC)and active organic carbon(AOC)in different soil layers(0-15,15-30,30-45 cm)under different planting densities(0.5 m×0.5 m,0.5 m×1.0 m,1.0 m×1.0 m)were studied.[Result]The result showed that with the increase of soil thickness,the contents of organic carbon and active organic carbon in the upper layer were the highest,followed by the middle layer,and the lowest in the lower layer.The difference between soil organic carbon and active organic carbon under different planting densities was higher than that of the control,and the difference was the largest under 0.5 m×0.5 m planting density.[Conclusion]High-density planting of Zanthoxylum was more conducive to ecological restoration in the region,improving the carbon sink/source function of the ecosystem,and increasing its industrial value.

关 键 词：花椒 种植密度 土壤有机碳 土壤活性有机碳 生态恢复 

分 类 号：S153.6[农业科学—土壤学]