干旱区生态环境知识资源中心(Arid): 湘西南喀斯特地区灌丛生态系统植物和土壤养分特征

Arid

	湘西南喀斯特地区灌丛生态系统植物和土壤养分特征
其他题名	Plant and soil nutrient characteristics in the karst shrub ecosystem of southwest Hunan,China
	李艳琼 1; 邓湘雯 2; 易昌晏 3; 邓东华 3; 黄志宏 2; 项文化 2; 方晰 2; 景宜然 1
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2016
卷号	27 期号:4 页码:1015-1023
中文摘要	以湖南省邵阳县轻度、中度(弃耕地)和重度石漠化的灌丛生态系统为研究对象,采集3种不同石漠化程度的灌丛植物样品以及0 ~ 15、15 ~ 30、30 ~ 45 cm 3个土层土壤,研究土壤、植被养分的分配格局及相互关系. 结果表明: 土壤有机碳、全N含量在不同土层中差异显著,且其含量均随土层深度增加而减少,而全P、全K、全Ca、全Mg含量在各土层间无显著差异; 3种石漠化程度灌丛土壤全N、全P、全Ca、全Mg含量差异显著,且中度石漠化样地土壤有机碳、全N和全P含量相对较高. 轻度和重度石漠化土壤各元素含量排序均为有机碳>全K>全Ca>全Mg>全N>全P,而中度石漠化样地土壤各元素含量排序为有机碳>全K>全Ca>全N>全Mg>全P; 3种石漠化程度植物各养分含量由高到低依次为Ca>N>K>Mg>P,且植物N、P含量和土壤全N、全P含量均呈显著正相关. 土壤养分状况与植物生长密切相关,根据不同石漠化程度土壤养分状况,应该采用封山育林与人工造林相结合以及针对性施肥的方法来治理石漠化.
英文摘要	This research was conducted in light (LRD),moderate (MRD,abandoned land) and intense (IRD) rocky desertification shrub ecosystems in Shaoyang,Hunan Province. We collected plant samples and soil at 3 layers (0-15,15-30,30-45 cm),and analyzed the distribution patterns of soil and plant nutrients and the relationships among them. Our results showed that the contents of soil organic carbon (SOC) and total N in different soil layers were various and decreased with soil depth,while the contents of total P,K,Ca and Mg had no obvious variation among the different soil layers. The contents of total N,P,Ca and Mg in soil were significantly different among the 3 rocky desertification shrub ecosystems,and the SOC,total N and total P in MRD were relatively higher than in the others. The rank of macroelement contents in soils for LRD and IRD was SOC>total K>total Ca>total Mg>total N>total P,while it was SOC>total K>total Ca>total N> total Mg>total P for MRD. The rank of macroelement contents in plants from the 3 rocky desertification shrub ecosystems was Ca>N>K>Mg>P,and the contents of N and P in plants were significantly positively correlated with the corresponding contents of total N and total P in soils. Soil nutrients were closely related to vegetation growth. According to the soil nutrient status of desertification plots of different grades,we should integrate the forest reservation with artificial afforestation and targeted fertilization methods for managing karst rocky desertification.
中文关键词	灌丛生态系统 ; 石漠化 ; 植物养分 ; 土壤养分
英文关键词	shrub ecosystem rocky desertification plant nutrient soil nutrient
语种	中文
国家	中国
收录类别	CSCD
WOS类目	BIOLOGY
WOS研究方向	Life Sciences & Biomedicine - Other Topics
CSCD记录号	CSCD:5685165
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235240
作者单位	1.中南林业科技大学生命科学与技术学院, 长沙, 湖南 410004, 中国; 2.中南林业科技大学生命科学与技术学院, 南方林业生态应用技术国家工程实验室, 长沙, 湖南 410004, 中国; 3.湖南省邵阳县林业局, 邵阳, 湖南 422100, 中国
推荐引用方式 GB/T 7714	李艳琼,邓湘雯,易昌晏,等. 湘西南喀斯特地区灌丛生态系统植物和土壤养分特征[J],2016,27(4):1015-1023.
APA	李艳琼.,邓湘雯.,易昌晏.,邓东华.,黄志宏.,...&景宜然.(2016).湘西南喀斯特地区灌丛生态系统植物和土壤养分特征.应用生态学报,27(4),1015-1023.
MLA	李艳琼,et al."湘西南喀斯特地区灌丛生态系统植物和土壤养分特征".应用生态学报 27.4(2016):1015-1023.