[1]崔静,陈云明,曹扬,等.黄土丘陵区人工柠条林土壤有机碳组分和碳库管理指数演变[J].水土保持研究,2013,20(01):52-56.
　CUI Jing,CHEN Yun-ming,CAO Yang,et al.Evolution Characteristics of Soil Organic Carbon Components and Carbon Management Index in Caragana microphylla Plantations in Loess Hilly Region[J].Research of Soil and Water Conservation,2013,20(01):52-56.
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黄土丘陵区人工柠条林土壤有机碳组分和碳库管理指数演变

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 20 期数: 2013年01期 页码: 52-56 栏目: 出版日期: 2013-02-28
Title:
Evolution Characteristics of Soil Organic Carbon Components and Carbon Management Index in Caragana microphylla Plantations in Loess Hilly Region
作者:
崔静1, 陈云明2,3, 曹扬2, 王琼芳1, 黄佳健4, 王琳琳5
1. 西北农林科技大学 资源环境学院, 陕西 杨凌 712100;
2. 西北农林科技大学 黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西 杨凌 712100;
3. 西北农林科技大学 水土保持研究所, 陕西 杨凌 712100;
4. 云南今禹生态 工程咨询有限公司, 昆明 650244
Author(s):
CUI Jing1, CHEN Yun-ming2,3, CAO Yang2, WANG Qiong-fang1, HUANG Jia-jian4, WANG Lin-lin5
1. College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A & F University, Yangling, Shaanxi 712100, China;
3. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China;
4. Yunnan Jinyu Ecological Engineering Consultation Co., Ltd, Kunming 650244, China
关键词:
黄土丘陵区; 柠条; 土壤有机碳; 碳库管理指数
Keywords:
loess hilly region; Caragana microphylla; soil organic carbon; carbon management index
分类号:
S153.6+21
摘要:
采用时空替代法，探讨了黄土丘陵区人工柠条林地在10，17，30，34，40，50 a时间序列上0—40 cm土层内土壤碳组分和碳库管理指数的演变特征。结果表明：（1）随着林龄的增加，柠条林地中土壤总有机碳和活性有机碳含量增加，均为10 a时含量最低，40～50 a时趋于稳定。但二者出现的峰值年限不同，总有机碳在34 a时含量最高，达4.29 g/kg，而活性有机碳含量在40 a时最高，为0.83 g/kg；（2）柠条林地碳库管理指数随林龄增加整体呈上升趋势，在0—20 cm土层随生长年限的增加明显提高，比10 a柠条林地高出54.2%～153.0%，而在20—40 cm土层其增幅不明显，甚至在17～30 a期间比10 a时下降了8.0%～16.9%；（3）相关分析表明，活性有机碳与总有机碳之间存在极显著正相关关系，并且与土壤肥力指标也呈显著或极显著相关；碳库指数和碳库管理指数与土壤碳组分、其他主要肥力指标之间也显著相关。研究表明，在黄土丘陵区植被恢复过程中，柠条种植可增加土壤的有机碳含量，改善土壤肥力。碳库指数与碳库管理指数可以作为反映黄土丘陵区植被恢复的监测因子。
Abstract:
Based on the spatiotemporal substitution method, the evolution characteristics of soil organic carbon components and carbon management index was investigate in Caragana microphylla plantations with age sequence of 10 a, 17 a, 30 a, 34 a, 40 a and 50 a in the loess hilly region. The results showed that: the contents of soil organic carbon and soil labile organic carbon both increased with the growth years of C. microphylla, and had similar variation trend with the lowest content in the 10-year plantations and the steady level in 40 to 50-year plantations. But the peak content of soil organic carbon and soil labile organic carbon appeared in different ages, the highest soil organic carbon content was found in the 34-year plantations, with the value of 4.29 g/kg, while the highest soil labile organic carbon content presented in the 40-year plantations, with the value of 0.83 g/kg. Soil carbon management index increased with the C. microphylla growth. At the depth of 0—20 cm, the carbon management index of C. microphylla plantations had significantly increased from 54.2% to 153.0% compared with that in the 10-year plantations, but at the depth of 20—40 cm, soil carbon management index did not increased greatly, and it even decreased from 8.0% to 16.9% during the 17-year and 30-year plantations. Correlation analysis showed that there was a very significant positive correlation between soil total organic carbon content and soil labile organic carbon content, and soil carbon components also had significant or very significant relationship with soil fertility index. Carbon pool index and carbon management index had significant relationship with soil carbon components and soil fertility indexes. The results indicated that planting C. microphylla will improve the soil fertility. Carbon pool index and carbon management index can be used as monitoring factors to reflect vegetation recovery in loess hilly region.

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备注/Memo

收稿日期:2012-07-01;改回日期:2012-08-28。
基金项目:中国科学院战略性先导科技专项“暖温带落叶阔叶混交林区域森林固碳现状、速率和潜力研究”（XDA05050203）；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）
作者简介:崔静(1986-),女,山西运城人,硕士研究生,主要研究方向:水土保持与荒漠化防治。E-mail:cui.jing1987@163.com
通讯作者:陈云明(1967-),男,陕西澄城人,博士,研究员,主要研究方向:生态恢复与水文。E-mail:ymchen@ms.iswc.ac.cn

更新日期/Last Update: 1900-01-01