干旱区生态环境知识资源中心(Arid): 湘西南石漠化地区不同植被恢复模式的土壤有机碳研究

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	湘西南石漠化地区不同植被恢复模式的土壤有机碳研究
其他题名	Soil Organic Carbon Changes in Different Vegetation Restoration Types of Rocky Desertification in Southwestern Hunan, China
	徐杰 1; 邓湘雯 2; 方晰 2; 黄小健 3; 刘豪健 3; 彭长辉 1
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2012
卷号	26 期号:6 页码:171-174,179
中文摘要	以湘西南石漠化地区侧柏纯林、侧柏+枫香混交林、湿地松+枫香混交林、栾树纯林和封山育林5种植被恢复模式下的土壤为研究对象,通过野外土壤剖面调查和土壤样品化学分析,研究石漠化地区植被恢复过程中不同层次、不同坡位、不同林龄的土壤有机碳特征。结果表明:(1) 5种林分土壤有机碳含量为栾树纯林>封山育林>侧柏纯林>侧柏+枫香混交林>湿地松+枫香混交林,并随土壤深度增加而递减,各林分变化幅度不同,且各土层之间差异显著。(2)随林龄的增加,土壤有机碳含量增加且主要集中在土壤表层。(3)同一林分下,不同坡位有机碳含量变化为下坡>中坡>上坡。(4)土壤有机碳密度在5种林分中差异显著,并随土壤深度增加而减少;在整个土壤剖面上,有机碳密度为54.22 ~96.52 t/hm~2,其中0-15cm有机碳密度的贡献率达55.95%。
英文摘要	In order to understand the soil carbon sequestration in vegetation restoration of rock desertification, the concentration, distribution and storage of soil organic carbon(SOC) were investigated in five forest types in rocky desertification areas in southwestern Hunan of China. The five vegetation restoration types included: Platycladus orientalis(Linn.) Franco pure forests (POPF), Platycladus orientalis(Linn.) Franco and Liquidamba formosana Hance mixed forests (PLMF), Pinus elliottii and Liquidamba formosana Hance mixed forests(PeLMF), Koelreuteria paniculata Laxm pure forests(KLPF), and forest reservation(FR). The results showed that, (1) The rank of SOC concentration decreased in the five forest types as: KLPF> FR>POPF>PLMF>PeLMF. The SOC concentration declined with the increase of the depth of soils, and was significantly different between the soils in the five forests. (2) The SOC content increased with aging stands, and the increased SOC content occurred particularly at the top of soil systems. (3)The storage of SOC varied with different slope positions in a mountain forests and increased in an order: Bottom places> middle places>top places. (4) The density of SOC ranged from 54.22 t/hm~2 to 96.52 t/hm~2, of which about 55.95% was found at the top soil layer(0-15 cm). The SOC storage differed significantly in the five forest types and decreased with soil depth increased.
中文关键词	石漠化 ; 邵阳县 ; 土壤有机碳 ; 植被恢复
英文关键词	rocky desertification Shaoyang county soil organic carbon vegetation restoration
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:4728215
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228604
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	徐杰,邓湘雯,方晰,等. 湘西南石漠化地区不同植被恢复模式的土壤有机碳研究[J],2012,26(6):171-174,179.
APA	徐杰,邓湘雯,方晰,黄小健,刘豪健,&彭长辉.(2012).湘西南石漠化地区不同植被恢复模式的土壤有机碳研究.水土保持学报,26(6),171-174,179.
MLA	徐杰,et al."湘西南石漠化地区不同植被恢复模式的土壤有机碳研究".水土保持学报 26.6(2012):171-174,179.