凋落物输入改变对慈竹林土壤有机碳的影响

彭琳; 王晓君; 黄从德; 李开志

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凋落物输入改变对慈竹林土壤有机碳的影响

试验研究

- 凋落物输入改变对慈竹林土壤有机碳的影响
- Effects of Litter Input Change on Soil Organic Carbon in Dendrocalamus Affinnis Forest
- 水土保持通报 2014年33卷第1期页码：129-132
- 作者机构：
  
  四川农业大学林学院,四川,雅安,625014
- 作者简介：
- 基金信息：
  
  国家"十二五"科技支撑项目"长江上游低山丘陵区生态综合整治技术与示范"(2011BAC09B05);四川省"十二五"农作物育种攻关项目"突破性经济林(竹)新品种选育"(2011NZ0098-10)
- DOI：
  中图分类号：
- 纸质出版：2014
- 稿件说明：
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彭琳, 王晓君, 黄从德, 等. 凋落物输入改变对慈竹林土壤有机碳的影响[J]. 水土保持通报, 2014,33(1):129-132.

PENG Lin, WANG Xiao-jun, HUANG Cong-de, et al. Effects of Litter Input Change on Soil Organic Carbon in Dendrocalamus Affinnis Forest[J]. Bulletin of Soiland Water Conservation, 2014, 33(1): 129-132.
彭琳, 王晓君, 黄从德, 等. 凋落物输入改变对慈竹林土壤有机碳的影响[J]. 水土保持通报, 2014,33(1):129-132. DOI：

PENG Lin, WANG Xiao-jun, HUANG Cong-de, et al. Effects of Litter Input Change on Soil Organic Carbon in Dendrocalamus Affinnis Forest[J]. Bulletin of Soiland Water Conservation, 2014, 33(1): 129-132. DOI：

摘要

通过野外试验

研究了凋落物输入改变对慈竹林土壤有机碳的影响。设置10%

50%和70%这3种去除凋落物量和分别添加15%

25%的绵竹、杉木凋落物处理及对照。结果发现

去除凋落后慈竹林土壤有机碳含量明显减少(p<0.05)

而且去除量越大

有机碳含量减少越大。添加外源凋落物显著提高了慈竹林土壤有机碳含量(p<0.05)

其中

15%的添加比例比25%更有利于土壤有机碳的积累

添加绵竹凋落物对土壤有机碳增加的效应高于添加杉木凋落物。研究表明

选择适合的树种和恰当的混交比例以及加强对凋落物层的保护

对维持慈竹林土壤有机碳具有重要的意义。

Abstract

A field experiment with three litter removed(10%

50% and 70%) and four litter added(15% and 25% Bambusa intermedia

and 15% and 25% Cunninghamia lanceolata) treatments was conducted to study soil organic carbon in Dendrocalamus affinnis forest as affected by changeing litter input. Results showed that soil organic carbon content in the forest significantly decreased after litter was removed(p<0.05). The more the litter removed

the larger the decrease in soil organic carbon content was. Litter adding can significantly increase soil organic carbon content(p<0.05). Higher soil organic carbon content was detected in the 15% litter added treatment as compared with the 25% litter-added. Moreover

adding B. intermedia litter was more beneficial to soil carbon accumulation than adding C. lanceolata litter. This study suggests that the appropriate mixed species and proportion

as well as the protection of litter layer

can play important roles in maintaining soil organic carbon in D. affinnis forests.

关键词

Keywords

references

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