干旱区生态环境知识资源中心(Arid): 湘中石漠化区土壤有机碳和全氮的变化特征

Arid

	湘中石漠化区土壤有机碳和全氮的变化特征
其他题名	Study on soil organic carbon and total nitrogen variation in rocky desertification area of central Hunan
	王纳伟; 吴立潮; 钟杰; 赵京; 张景
来源期刊	南方农业学报
ISSN	2095-1191
出版年	2013
卷号	44 期号:4 页码:616-620
中文摘要	[目的]了解不同石漠化程度土壤中有机碳、全氮含量的变化规律和特征,为研究湘中石漠化地区常绿阔叶林生态系统的恢复机制提供参考。[方法]采用时空互代的方法,通过取样分析,根据因子打分法评定石漠化程度并测定不同石漠化等级样地的土壤性质。[结果]湘中地区石漠化程度对土壤中有机碳、全氮含量有显著影响,两者之间表现出极显著的线性相关,同等石漠化阶段的土壤有机碳、全氮含量总体差异不显著(P>0.05),变化范围分别是14.94~42.43 g/kg和1.20~3.96 g/kg,均随石漠化程度加剧而逐渐降低,土壤表土层到底土层的有机碳和全氮含量变化均为从高到低,且随着石漠化程度加剧,表土层与底土层的碳、氮含量差异逐步减弱。[结论]土壤有机碳和全氮含量减少对于湘中地区常绿阔叶林向轻度石漠化阶段演替的表征明显,但对于该区域石漠化演替的阶段表征不明显。
英文摘要	[Objective] This research focused on changing rules and characteristics of soil organic carbon (SOC) and total nitrogen (TN) in different soil degrees degradation of which provided references for recovery mechanism of the evergreen broad-leaved forest ecosystem in rocky desertification area of central Hunan.[Method] Based on space-time transformation method and factor scoring method, soil organic carbon and total nitrogen contents in the sampled soil with different levels of rocky desertification were surveyed and evaluated.[Result] The degree of rocky desertification had obvious influence on soil organic carbon and total nitrogen contents and they showed very significant linear correlation. The difference of soil organic carbon and total nitrogen contents in the same level of rocky desertification were not significant(P>0.05), ranged from 14.94-42.43 g/kg and 1.20-3.96 g/kg, respectively. Along with the increasing degree of rocky desertification, soil organic carbon and total nitrogen contents reduced. In addition, soil organic carbon and total nitrogen contents reduced from overburden layer to bottom layer. With the rocky desertification degree increasing, the difference of soil organic carbon and total nitrogen contents between overburden layer and bottom layer gradually weakened.[Conclusion] The reduction of soil organic carbon and total nitrogen contents had clear representation effect on the succession from evergreen broad-leaved forest to slight rocky desertification in central area of Hunan, but no obvious representation effect on the succession stages of rocky desertification in this area.
中文关键词	石漠化地区 ; 土壤 ; 有机碳 ; 全氮 ; 变化 ; 湘中
英文关键词	rocky desertification area soil organic carbon total nitrogen variation central area of Hunan Province
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4850533
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229856
作者单位	中南林业科技大学, 长沙, 湖南 410004, 中国
推荐引用方式 GB/T 7714	王纳伟,吴立潮,钟杰,等. 湘中石漠化区土壤有机碳和全氮的变化特征[J],2013,44(4):616-620.
APA	王纳伟,吴立潮,钟杰,赵京,&张景.(2013).湘中石漠化区土壤有机碳和全氮的变化特征.南方农业学报,44(4),616-620.
MLA	王纳伟,et al."湘中石漠化区土壤有机碳和全氮的变化特征".南方农业学报 44.4(2013):616-620.