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| 黄土丘陵区柠条人工林土壤有机碳动态及其影响因子 | |
| 引用本文： | 曲卫东,陈云明,王琳琳,张飞,张学伍.黄土丘陵区柠条人工林土壤有机碳动态及其影响因子[J].中国水土保持科学,2011,9(4):72-77. |
| 作者姓名： | 曲卫东 陈云明 王琳琳 张飞 张学伍 |
| 作者单位： | 1. 西北农林科技大学资源环境学院,712100,陕西杨凌 2. 中国科学院水利部水土保持研究所,712100,陕西杨凌 3. 榆林市绿巨人水利设计有限责任公司,719000,陕西榆林 4. 华东勘测设计研究院,310014,杭州 |
| 基金项目： | 中国科学院百人计划项目“黄土高原半干旱区群落水分平衡与调控机理”(kzcx2-yw-BR-02); 陕西省科学院科技计划重点项目“陕北黄土丘陵区植被恢复及动植物多样性保护关键技术”(2008k-04) |
| 摘 要： | 以黄土丘陵区柠条人工林为研究对象,采用野外调查与室内分析相结合的方法,探讨柠条生长过程中土壤有机碳储量的变化规律。结果表明:1)土壤有机碳主要分布在0～20 cm土层,占0～50 cm土层总储量的49%～63%;2)相对于对照地,柠条林地土壤有机碳储量随柠条生长年限的增加先减小再升高最后趋于稳定,10、26、40、50 a柠条林地土壤总有机碳储量分别为1.555、3.236、2.775、2.444 kg/m2,26 a林地土壤有机碳储量最高,随林龄增大其变化趋于稳定;3)相关性分析结果表明,土壤有机碳质量分数与土壤密度之间呈显著负相关关系,各林地土壤密度随柠条生长年限的增加而减小,说明柠条可以通过改变土壤性质间接增加土壤总有机碳储量,土壤有机碳质量分数与根系生物量、土壤全氮质量分数之间呈极显著正相关关系,说明柠条的根系生长和固氮特性有助于有机碳的积累。 |
| 关 键 词： | 柠条 造林 土壤有机碳密度 土壤有机碳积累 |
Dynamics of soil organic carbon in Caragana microphylla forest and its relationship with environment factors in loess hilly region |
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| Qu Weidong,Chen Yunming,Wang Linlin,Zhang Fei,Zhang Xuewu.Dynamics of soil organic carbon in Caragana microphylla forest and its relationship with environment factors in loess hilly region[J].Science of Soil and Water Conservation,2011,9(4):72-77. | |
| Authors: | Qu Weidong Chen Yunming Wang Linlin Zhang Fei Zhang Xuewu |
| Affiliation: | Qu Weidong1,Chen Yunming2,Wang Linlin3,Zhang Fei4,Zhang Xuewu1 (1.College of Resources and Environment,Northwest A&F University,712100,Yangling,Shaanxi,2.Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,3.Yulin Green Superman Water Conservancy Design Co.,Ltd,719000,Yulin,4.East China Investigation and Design Institute Under CHECC,310014,Hangzhou: China) |
| Abstract: | The variation rule of soil organic carbon density in the growing process of man-made forest was studied by taking Caragana microphylla plantation in loess hilly region as the research object with field survey and laboratory analysis.The results indicated as follows: 1) Soil organic carbon are mainly distributed in the 0-20cm soil layer,which accounted for 49% to 63% of total soil organic carbon content in 0-50cm soil layer.2) Compared with the control,the soil organic carbon density of C.microphylla plantat... |
| Keywords: | Caragana microphylla afforestation soil organic carbon density soil organic carbon accumulation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
