干旱区生态环境知识资源中心(Arid): 湘西北石漠化区不同植被类型土壤C、N、P的化学计量特征

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	湘西北石漠化区不同植被类型土壤C、N、P的化学计量特征
其他题名	Stoichiometric characteristics of soil C, N and P in different vegetation types in the rocky desertification area of northwestern Hunan province
	刘兴锋 1; 刘思凡 1; 蒋龙 1; 何功秀 2
来源期刊	中南林业科技大学学报
ISSN	1673-923X
出版年	2019
卷号	39 期号:2 页码:72-78
中文摘要	探讨湘西北石漠化区阔叶林、针阔混交林、针叶林和灌木丛4种典型植被类型各土层土壤有机C、全 N和全P及其土壤化学计量特征的变化规律。结果表明:1)4种植被类型土壤有机C、全N和全P的含量均随土层深度的加深而下降,不同植被类型土壤有机C和全P均表现为:阔叶林>针阔混交林>针叶林>灌木丛。 2)阔叶林和针阔混交林0 ~ 20 cm土壤有机C比灌木丛分别高出了158.98%和64.87%;土壤全N和全P含量的变异系数较小,仅为0.26和0.21,属弱变异,在4中植被类型和不同土层间,其值比较稳定。3)不同植被类型土壤C/N和C/P均表现为:阔叶林>针阔混交林>灌木丛>针叶林,其中阔叶林和针阔混交林0 ~ 20 cm土壤C/N显著高于针叶林和灌木丛,分别高出了132.98%和92.72%;土壤C/P和N/P的值较稳定,变异幅度较小,变异系数仅为0.23和0.25,属弱变异。4)相关性分析表明,土壤有机C和全P与土壤化学计量比具有较强的正相关性,土壤C/N与有机C和全P具有显著正相关关系,土壤C/P与土壤有机C具有极显著正相关关系,土壤N/P与土壤有机C和全P具有显著负相关关系。5)主成分分析表明,阔叶林对土壤有机C、全N和全P及其化学计量比的影响最为显著。
英文摘要	The change rules of soil organic C, total N and total P and soil stoichiometric characteristics of four typical vegetation types (broad-leaved forest, coniferous and broad-leaved mixed forest, coniferous forest and shrub) were studied in the rocky desertification area of northwestern Hunan. The results show as follows: 1) The contents of organic C, total N and total P in the four types of soils decreased with the deepening of the soil depth, the soil organic C and P in different vegetation type forests ranked as broad-leaved forest > needle width mixed forest > coniferous forest > shrubs. 2) The soil organic C of broad-leaved forest and coniferous and broadleaved mixed forest were 158.98% and 64.87% higher than that of shrub, respectively; The variation coefficients of soil total N and total P content were only 0.26 and 0.21, which was a weak mutation, among four vegetation types and different soil layers, the two values were relatively stable. 3) The soil C/N and C/P in different vegetation types showed the same tread as broad-leaved forest > coniferous and broad-leaved mixed forest > shrub > coniferous forest; of the four forests, the soil C/N contents of in 0-20 cm soil layer of broadleaved forest and coniferous and broad-leaved mixed forest were significantly higher than those of coniferous forest and shrub, being 132.98% and 92.72% over the coniferous forest respectively; the soil C/P and N/P values were relatively stable, the variation value were small, and the variation coefficients were only 0.23 and 0.25, being weak variation. 4) Correlation analysis shows that there were strong positive correlations between soil organic C and soil stoichiometry, and total P and soil stoichiometry; soil C/N had significant positive correlations with organic C and total P, and soil C/P had a significant positive correlation with soil organic C; soil N/P had significant negative correlation with soil organic C and total P. 5) The effects of broadleaf forest on soil organic C, total N and total P and their stoichiometry were the most significant.
中文关键词	植被类型 ; 阔叶林 ; 针阔混交林 ; 针叶林 ; 土壤元素 ; 土壤化学计量特征 ; 石漠化地区 ; 湘西北
英文关键词	vegetation types broad-leaved forest coniferous and broad-leaved mixed forest coniferous forest soil elements soil stoichiometric characteristics rocky desertification area northwestern Hunan
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:6498758
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239853
作者单位	1.湘西自治州林业科学研究所, 吉首, 湖南 416000, 中国; 2.中南林业科技大学林学院;;中南林业科技大学水土保持与荒漠化防治实验室, ;;, 长沙;;长沙, 湖南;;湖南 410004;;410004, 中国
推荐引用方式 GB/T 7714	刘兴锋,刘思凡,蒋龙,等. 湘西北石漠化区不同植被类型土壤C、N、P的化学计量特征[J],2019,39(2):72-78.
APA	刘兴锋,刘思凡,蒋龙,&何功秀.(2019).湘西北石漠化区不同植被类型土壤C、N、P的化学计量特征.中南林业科技大学学报,39(2),72-78.
MLA	刘兴锋,et al."湘西北石漠化区不同植被类型土壤C、N、P的化学计量特征".中南林业科技大学学报 39.2(2019):72-78.