干旱区生态环境知识资源中心(Arid): 湘西南不同石漠化程度土壤理化性质及相关性分析

Arid

	湘西南不同石漠化程度土壤理化性质及相关性分析
其他题名	Soil Properties and Their Correlations Under Different Grades of Rocky Desertification Ecosystems in Southwest Hunan,China
	景宜然 1; 邓湘雯 2; 邓东华 3; 黄志宏 2; 项文化 2; 方晰 2; 李艳琼 1; 张胜利 1
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2016
卷号	30 期号:1 页码:189-195
中文摘要	以湖南省邵阳县郦家坪镇轻度、中度和重度石漠化程度的土壤为研究对象,分别在3种不同石漠化程度的样地采集土壤(015cm,1530cm,3045cm 3个土层)样品,并对土壤物理性质、养分含量特征及其之间的相关性进行了分析。结果表明:随着石漠化程度的加深,土壤呈现明显的沙化现象;土壤容重逐渐增大,孔隙度、毛管持水量减小。土壤偏弱酸性;有机质、全N与全P含量变化均表现为中度(弃耕地) >轻度>重度,Ca、Mg含量随着石漠化程度加深逐渐增加。土壤有机质、全N含量、土壤机械组成、土壤容重、孔隙度等理化因子之间相关性显著(p<0.05),其中有机质含量、全N含量与土壤容重之间的相关性极显著(p<0.01),Ca含量与pH之间相关性极显著(p<0.01)等。随着石漠化程度加深,土壤理化性质逐渐恶化,但整体差异并不显著,表明该地区近年来退化并不强烈。通过施肥和合理的植被恢复模式能够有效的改善石漠化土壤养分含量,间接改善土壤的理化性质,从而提高生产力。
英文摘要	The study site,located in the Town Lijiaping of Shaoyang county,Hunan province,was investigated. Soil samples were collected at different depths including 015cm,1530cm,and 3045cm from the light rocky desertification(LRD)area,moderate rocky desertification(MRD)area and intense rocky desertification (IRD)area.Soil physiochemical properties,nutrient content characteristics and their correlations were analyzed.The results showed that with the deterioration of rocky desertification,soil sand content and soil bulk density increased significantly while soil porosity and capillary moisture capacity decreased.The pH value indicated the weak acidity of the soil.The contents of soil organic matter,soil total N and total P under different levels of rocky desertification all listed in the order of MRD(abandoned cropland)>LRD>IRD. The contents of Ca and Mg in soil increased with the deterioration of rocky desertification.Significant correlations existed among soil organic matter content,total N content,soil mechanical composition,soil bulk density and soil porosity(p<0.05),and the correlations were extremely significant between soil organic matter content,total N and soil bulk density(p<0.01),as well as between Ca content and soil pH(p< 0.01).The negative effects on physical and chemical properties of soil gradually increased with the deterioration of rocky desertification,but soil physiochemical properties did not significantly change(p>0.05),which indicated that the soil degradation of the study area was not strong in recent years.The soil nutrient content and soil physical properties in this rocky desertification soil can be effectively improved by applying fertilizers and reasonable vegetation restoration models,leading to the increase of productivity in the Karst area.
中文关键词	喀斯特 ; 土壤理化性质 ; 相关性 ; 植被恢复
英文关键词	Karst soil physiochemical properties correlations vegetation restoration
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:5638859
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234967
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	景宜然,邓湘雯,邓东华,等. 湘西南不同石漠化程度土壤理化性质及相关性分析[J],2016,30(1):189-195.
APA	景宜然.,邓湘雯.,邓东华.,黄志宏.,项文化.,...&张胜利.(2016).湘西南不同石漠化程度土壤理化性质及相关性分析.水土保持学报,30(1),189-195.
MLA	景宜然,et al."湘西南不同石漠化程度土壤理化性质及相关性分析".水土保持学报 30.1(2016):189-195.