[1]谷丽萍,郭永清*,泽桑梓,等. 云南干热河谷不同密度麻疯树人工林土壤活性有机碳特征[J].西北林学院学报,2014,29(02):26-31.[doi:doi:10.3969/j.issn.1001-7461.2014.02.05]
　GU Li-ping,GUO Yong-qing*,ZE Sang-zi,et al. Characteristics of Soil Active Organic Carbon in Jatropha curcas Plantations with Different Densities in Dry-hot Valley Area of Yunnan Province[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2014,29(02):26-31.[doi:doi:10.3969/j.issn.1001-7461.2014.02.05]
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 云南干热河谷不同密度麻疯树人工林土壤活性有机碳特征()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第29卷
期数:
2014年02期
页码:
26-31
栏目:
出版日期:
2014-03-30

文章信息/Info

Title:
 Characteristics of Soil Active Organic Carbon in Jatropha curcas Plantations with Different Densities in Dry-hot Valley Area of Yunnan Province
文章编号:
1001-7461（2014）-02-0026-06
作者:
 谷丽萍1; 郭永清1*; 泽桑梓1; 杨旭1; 李江1; 陈伟1; 阮宏华2
 (1.云南省林业科学院，云南 昆明650201；2.南京林业大学，江苏 南京210037)
Author(s):
 GU Li-ping1; GUO Yong-qing1*; ZE Sang-zi1; YANG Xu1; LI Jiang1; CHEN Wei1; RUAN Hong-hua2
 （1. Yunnan Academy of Forestry，Kunming，Yunnan 650201，China；2. Nanjing Forestry University，Nanjing，Jiangsu 210037，China）
关键词:
 ; 干热河谷; 麻疯树; 土壤有机碳; 林分密度
Keywords:
 ; dry-hot valley;  Jatropha curcas;  soil organic carbon;  stand densit
分类号:
S718.56
DOI:
doi:10.3969/j.issn.1001-7461.2014.02.05
文献标志码:
A
摘要:
 采用田间试验与室内实验相结合的方法，研究云南省红河流域干热河谷区3种不同密度（低密度1 112株/hm2、中密度1 668株/hm2和高密度3 335株/hm2）麻疯树人工林0~40 cm土壤总有机碳、微生物生物量碳、水溶性有机碳和易氧化碳的分布特征及差异。结果表明：土壤总有机碳与3种活性有机碳含量均随着土层深度的增加而逐渐降低。在0~40 cm土层，土壤总有机碳含量的分布范围为10.57～20.51 g/kg；土壤微生物生物量碳含量的分布范围为856.10～159.41 mg/kg；水溶性有机碳含量的分布范围为259.55～736.92 mg/kg；易氧化碳含量的分布范围为3.56～1.63 mg/g。在0~40 cm土层，高密度人工林土壤总有机碳、水溶性有机碳和易氧化碳含量最高，而低密度人工林土壤微生物生物量碳含量最高。土壤水溶性有机碳是土壤有机碳的重要组成部分，所占比例均超过了10%，而微生物生物量碳和易氧化碳所占的比例较低。在本研究的范围内，从土壤固碳增汇能力强弱的角度考虑，建议采用高密度方式种植麻疯树人工林。
Abstract:
 Field and indoor experiments were carried out to analyze the soil active organic carbon of Jatropha curcas plantations with 3 densities （1 112, 1 668, and 3 335 trees/hm2） in dry-hot valley area of Yunnan Province, China. The distribution and difference of soil total organic carbon (TOC), microbial biomass carbon (MBC), dissolved organic carbon (DOC) and readily oxidized carbon (ROC) in 0-40 cm of soil layer were tested. The results showed that the contents of TOC and 3 active organic carbons decreased with the increase of soil layer. The distribution of TOC with 3 different densities ranged from 10.569±0.115 to 20.513±0.381 g/kg, those of SMBC, DOC and ROC were 856.10±65.796-159.41±8.947 mg/kg,259.55±11.645-736.92±19.102 mg/kg and 3.56±0.13-1.63±0.11 mg/g, respectively. The maximum values of TOC, DOC and ROC were observed in the plantation with the density of 3 335 trees/hm2, while that of MBC was in the density of 1 112 trees/hm2. The proportion of DOC in 3 densities was more than 10 percent of total which was the important part of soil active organic carbon, while the proportions of MBC and ROC were relatively low. In the context of this study, high density (3 335 trees/hm2) should be taken in the field from the point of fixing carbon sink.

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备注/Memo

备注/Memo:
 收稿日期：2013-09-23 修回日期：2013-10-29
基金项目：国家科技支撑计划项目（2007BAD32B02-01）。
作者简介：谷丽萍，女，硕士，助理研究员，研究方向：森林生态和森林培育。E-mail:glpsxsc@163.com
*通信作者：郭永清，男，博士，研究方向：森林生态和森林碳汇。E-mail:gyq2001@163.com
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