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黔北喀斯特不同演替阶段森林土壤的有机碳储量

Organic Carbon Storage of Forest Soil in Different Succession Stages of Karst in Northern Guizhou

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[目的]为喀斯特区域的生态政策和生态补偿提供重要的科技支撑.[方法]采用空间代替时间的方法分析人工林和不同森林演替阶段的土壤固碳能力.[结果]与森林演替顶级阶段相比,人工林土壤固碳潜力较大;与年龄相近的演替初期生态系统比较,人工林能够快速地增加较深层(10 ~50 cm)土壤有机碳的含量;随着森林年龄的增加,表层(0 ~ 10 ca)土壤有机碳呈增加趋势,演替初级阶段土壤中的有机碳占37.96%,演替中期的占32.73%,演替顶级的占31.02%;人工林0~10 cm土层有机碳占26.26%.[结论]实施退耕还林进行人工造林能够较快地增加土壤有机碳的含量,而且能够增加较深土层的有机碳的含量.
[Objective] This study aimed to provide an important scientific support for ecological policies and compensation of karst region.[Method] A method of using spatial succession sequences instead of time was adopted in this study.[Result] Compared with the maxiumum stage of forest succession,the potential of soil carbon sequestration in plantation is great.Compared with the early successional ecosystem,plantation can rapidly increase soil organic carbon content in soil deeper from 10 cm to 50 cm.In the initial stage of succession,organic carbon accounted for 37.96 % in surface soil,32.73 %,and in middle succession stage,31.02 % in succession climax and 26.26 % in plantation forest.[Conclusion] A method of conversion of cropland to forest and artificial afforestation can increase the amount of organic carbon,especially the deep soil.

Succession stagesSoil organic carbonForestKarstForest plantation

张宝成、李世杰、白艳芬、郭颖、向仰州

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遵义师范学院生命科学学院,贵州遵义563002

贵州省林业调查规划设计院,贵州贵阳550003

遵义师范学院公共管理学院,贵州遵义563002

演替阶段 土壤有机碳 森林 喀斯特 人工林

国家自然科学基金中国科学院战略性先导科技专项贵州省教育厅项目遵义师范学院博士启动基金贵州省千层次创新型人才

31660106XDA05000000黔教合KY字2014260遵师BS201406和BS201407遵市科合人才20164

2017

西南农业学报
四川,云南,贵州,广西,西藏及重庆省(区,市)农科院

西南农业学报

CSTPCDCSCD北大核心
影响因子:0.679
ISSN:1001-4829
年,卷(期):2017.30(11)
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