Characteristics of Soil Organic Carbon and Labile Organic Carbon under Different Land Use Types at Forest-Drought Valley Ecotone in the Upper Reaches of Minjiang River

WANG Xiao-jun; WANG Xian-shuai; HUANG Cong-de; WANG Yong-jun

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Characteristics of Soil Organic Carbon and Labile Organic Carbon under Different Land Use Types at Forest-Drought Valley Ecotone in the Upper Reaches of Minjiang River

更新时间：2024-11-07

- Characteristics of Soil Organic Carbon and Labile Organic Carbon under Different Land Use Types at Forest-Drought Valley Ecotone in the Upper Reaches of Minjiang River
- Vol. 25, Issue 2, (2011)
- 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：
- DOI：
  CLC： S153.62
- Published：2011
- 稿件说明：
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WANG Xiao-jun, WANG Xian-shuai, HUANG Cong-de, et al. Characteristics of Soil Organic Carbon and Labile Organic Carbon under Different Land Use Types at Forest-Drought Valley Ecotone in the Upper Reaches of Minjiang River[J]. 2011, 25(2).
DOI：

WANG Xiao-jun, WANG Xian-shuai, HUANG Cong-de, et al. Characteristics of Soil Organic Carbon and Labile Organic Carbon under Different Land Use Types at Forest-Drought Valley Ecotone in the Upper Reaches of Minjiang River[J]. 2011, 25(2). DOI：

摘要

研究了岷江上游森林/干旱河谷交错带川滇高山栎次生林、人工刺槐林、灌木林地、灌丛地、经济林和农耕地6种土地利用类型的土壤有机碳及微生物量碳、水溶性有机碳和易氧化碳。结果表明:6种土地利用类型土壤有机碳及3种活性有机碳含量以川滇高山栎次生林高于或显著高于其他土地类型(p<0.05)

以农耕地低于或显著低于其他土地类型(p<0.05)。6种土地利用类型的土壤平均有机碳含量(13.65g/kg)低于同区域土壤的平均有机碳含量(17 g/kg)。6种土地利用类型的土壤微生物量碳、水溶性有机碳和土壤易氧化碳占有机碳的比率分别介于1.36%~2.35%

0.82%~1.34%和7.77%~10.50%之间。研究结果说明交错带6种土地利用类型的土壤有机碳含量较低

有不断下降的趋势

且活性大

容易转化。因此

减少人为干扰对于维持和增加森林/干旱河谷交错带土壤有机碳具有重要的作用。

Abstract

This paper investigated characteristics of soil organic carbon and 3 kinds of labile carbon: microbial biomass carbon

water-soluble organic carbon and readily oxidation carbon under six kinds of land use types(including Quercus semicarpifolia secondary forest

Robinia pseudoacacia plantation

shrubbery

shrub

economic forest and farmland) at forest-drought valley ecotone in the upper reaches of Minjiang River.The results showed: Respective content of soil organic carbon and three kinds of labile organic carbon...

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