干旱区生态环境知识资源中心(Arid): 喀斯特石漠化区不同优势树种根际土壤有机碳及氮磷的变化

Arid

	喀斯特石漠化区不同优势树种根际土壤有机碳及氮磷的变化
其他题名	Changes of organic C, N and P in rhizosphere soil under various dominant tree species in karst rocky desertification area
	刘方 1; 王世杰2 ; 刘秀明 2; 蒲通达 1; 陈祖拥 1
来源期刊	中国岩溶
ISSN	1001-4810
出版年	2011
卷号	30 期号:1 页码:59-65
中文摘要	通过对贵州中部喀斯特石漠化区典型植被及土壤进行调查,探讨森林退化过程中不同群落优势树种根际土壤有机碳及氮磷含量的变化.结果表明:根际土壤有机碳及氮磷含量均高于非根际土壤;在不同植被类型之间,林木根际对土壤有机碳及氮磷的累积效应存在明显的差异性,其中土壤有机碳的累积效应表现最明显,其次是土壤磷素,而土壤氮素累积效应的差异性较小.在树木根基030cm水平范围内,根际土壤总有机碳,易氧化有机碳,全氮,有效氮和有效磷含量都明显高于3090cm外围根际区.不同群落优势树种之间,根际土壤碳及氮磷总量的差异性表现为总有机碳>全氮>全磷,而碳及氮磷的生物有效态含量则表现为有效磷>易氧化有机碳>有效氮.森林退化过程中,群落优势树种根际土壤总有机碳,易氧化有机碳及有效磷含量出现显著的下降,从而明显地影响土壤的肥力水平
英文摘要	The changes of organic carbon, nitrogen and phosphorus in rhizosphere soil under different dominant tree species in the process of forest degradation are estimated by investigating various vegetations and soils in karst rocky desertification region in Guizhou Province. The results show that the contents of organic C, N and P in rhizosphere soil are significantly higher than that in the bulk of soil. There is obvious difference in the enrichment ratio of organic C, N and P under different vegetation covers in rhizosphere soil. Among them, organic C has the strongest enrichment effect,P the second and N third. In 0~30cm scope of the tree rhizosphere soil, the concentrations of total organic C, easily oxidizable C, total N, available N, total P and available P are higher than that in 30~90cm. The difference of total amount is total organic C >total N >total P in rhizosphere soils while the difference of available amount is available P >easily oxidizable C>available N. During the process of forest degradation, the concentrations of total organic C, easily oxidizable C and available P in rhizosphere soil under different dominant tree species have decreased obviously so affected significantly the soil fertility
中文关键词	喀斯特石漠化 ; 优势树种 ; 根际土壤 ; 有机碳 ; 氮素 ; 磷素
英文关键词	karst rocky desertification dominant tree species rhizosphere soil organic carbon nitrogen phosphorus
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MINERALOGY
WOS研究方向	Mineralogy
CSCD记录号	CSCD:4185620
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227622
作者单位	1.贵州大学环境与资源研究所, 贵阳, 贵州 550003, 中国; 2.中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 贵州 550002, 中国
推荐引用方式 GB/T 7714	刘方,王世杰,刘秀明,等. 喀斯特石漠化区不同优势树种根际土壤有机碳及氮磷的变化[J],2011,30(1):59-65.
APA	刘方,王世杰,刘秀明,蒲通达,&陈祖拥.(2011).喀斯特石漠化区不同优势树种根际土壤有机碳及氮磷的变化.中国岩溶,30(1),59-65.
MLA	刘方,et al."喀斯特石漠化区不同优势树种根际土壤有机碳及氮磷的变化".中国岩溶 30.1(2011):59-65.