海拔对神农架表层土壤活性有机碳含量的影响

doi:10.11707/j.1001-7488.20140823

林业科学 ›› 2014, Vol. 50 ›› Issue (8): 162-167.doi: 10.11707/j.1001-7488.20140823

海拔对神农架表层土壤活性有机碳含量的影响

卢慧^1,2,3, 丛静^1,4, 薛亚东¹, 杨敬元⁵, 陈克龙², 李迪强¹, 张于光¹

1. 中国林业科学研究院森林生态环境与保护研究所国家林业局森林生态重点实验室北京 100091;
2. 青海师范大学西宁 810008;
3. 中央民族大学生命与环境科学学院北京 100081;
4. 中南大学资源加工与生物工程学院长沙 410083;
5. 湖北神农架国家级自然保护区管理局神农架 442421

收稿日期:2013-05-14 修回日期:2014-07-08 出版日期:2014-08-25 发布日期:2014-07-31
基金资助:
中央公益型科研院所基本科研业务费专项资金项目（CAFRIFEEP201101）；湖北神农架国家级自然保护区本底资源调查子项目；国家自然保护区生物标本资源共享子平台（2005DKA21404）。

Effects of Elevation on Surface Layer Soil Active Organic Carbon Content in Shennongjia Nature Reserve

Lu Hui^1,2,3, Cong Jing^1,4, Xue Yadong¹, Yang Jingyuan⁵, Chen Kelong², Li Diqiang¹, Zhang Yuguang¹

1. Key Laboratory of Forest Ecology and Environment of State Forestry Administration Institute of Forest Ecology, Environment and Protection, CAF Beijing 100091;
2. Qinghai Normal University Xining 810008;
3. College of Life and Environment Sciences, Minzu University of China Beijing 100081;
4. School of Mineral Processing and Bioengineering, Central South University Changsha 410083;
5. Hubei Shennongjia National Nature Reserve Administration Shennongjia 442421

Received:2013-05-14 Revised:2014-07-08 Online:2014-08-25 Published:2014-07-31
Contact: 张于光

摘要/Abstract

关键词: 神农架, 海拔, 活性有机碳, 水溶性有机碳, 易氧化有机碳, 微生物量碳

Abstract:

In this study, five typical vegetation types were selected along the elevational gradient in Shennongjia Nature Reserve, including shrubs, coniferous forest, mixed forest between coniferous and deciduous broad-leaved forest, deciduous broad-leaved forest, and evergreen broad-leaved forest. The content of soil organic carbon (SOC), water dissolved organic carbon (WDOC), labile organic carbon (LOC),and microbial biomass carbon (MBC) and their allocation proportions to SOC were analyzed. Furthermore, the Pearson relationship was analyzed between soil active organic carbon and plant diversity or soil physiochemical properties. The results showed that the soil organic carbon in the surface layer increased with the elevation increased, except for the deciduous broad-leaved forest. Distribution characteristics of MBC and LOC content along elevation gradient were obvious,but WDOC content was independent of the elevation gradient. The contents of the three kinds of active organic carbon in different elevational gradients were in the order of: LOC >MBC >WDOC. The allocation ratios of MBC, LOC and WDOC to SOC did not significantly alter with elevational gradient. Pearson relationship showed that SOC and MBC had a significant negative correlation with the diversity of trees and shrubs (P<0.05), while LOC and WDOC content had no significant correlation with plant diversity. In addition, SOC and MBC were significantly positively correlated with the content of soil moisture, total nitrogen, available nitrogen, total phosphorus and total sulfur (P<0.01). LOC had a significant and positive correlation with the content of soil moisture, total nitrogen, available nitrogen and total sulfur (P<0.01). There was a significant correlation between LOC and total phosphorus (P<0.05). The results revealed that these factors had a dominating impact on SOC, LOC and MBC. WDOC content had no obvious correlation with soil factors.

Key words: Shennongjia, elevation, active organic carbon, water dissolved organic carbon, labile organic carbon, microbial biomass carbon

中图分类号:

S718.51⁺6

卢慧, 丛静, 薛亚东, 杨敬元, 陈克龙, 李迪强, 张于光. 海拔对神农架表层土壤活性有机碳含量的影响[J]. 林业科学, 2014, 50(8): 162-167.

Lu Hui, Cong Jing, Xue Yadong, Yang Jingyuan, Chen Kelong, Li Diqiang, Zhang Yuguang. Effects of Elevation on Surface Layer Soil Active Organic Carbon Content in Shennongjia Nature Reserve[J]. Scientia Silvae Sinicae, 2014, 50(8): 162-167.

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海拔对神农架表层土壤活性有机碳含量的影响

Effects of Elevation on Surface Layer Soil Active Organic Carbon Content in Shennongjia Nature Reserve

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