干旱区生态环境知识资源中心(Arid): 贵州毕节地区不同石漠化程度土壤理化性质特征

Arid

	贵州毕节地区不同石漠化程度土壤理化性质特征
其他题名	Physicochemical Properties of Soil in Different Rocky Desertification in Bijie Area of Guizhou,China
	李开萍; 刘子琦; 李渊; 肖杰; 董晓超; 曹洋
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2017
卷号	31 期号:4 页码:205-210
中文摘要	为揭示喀斯特地区不同石漠化程度土壤理化性质特征及其影响机制,以贵州毕节石漠化地区土壤为研究对象,在雨季前、中、后对潜在、轻度、中度、强度石漠化程度的土壤进行了为期4年的监测,分析了不同石漠化程度土壤理化性质及其各项指标之间的相关性特征。结果表明:同一石漠化程度下,土壤有机质、全磷、有效磷、全氮和水解氮含量表现为雨季中>雨季后>雨季前。随着石漠化程度的加深,土壤田间持水量、毛管持水量、毛管孔隙度和总孔隙度升高,全磷、有效磷和有机质含量减少。与潜在石漠化程度相比,轻度、中度和强度石漠化程度的土壤全氮含量分别增加5.6%,20.9%,26.6%,水解氮含量分别增加3.5%,18.3%,36.2%,全钾含量分别增加15.8%,30%,46.3%,速效钾含量分别增加3.9%,11.3%, 16.5%。相关性分析结果显示,土壤有机质、全磷、全氮含量、土壤容重、总孔隙度、毛管持水量之间相关性显著(p<0.05),其中土壤有机质含量、全氮含量、容重、总孔隙度间相关性极显著(p<0.01)。研究结果为石漠化综合治理工作提供理论与科学依据。
英文摘要	In order to reveal the physicochemical properties and their influence mechanism of soil in different rocky desertification in karst area,a four-year monitoring was conducted on soil in different rocky desertification degrees(potential,light,moderate,intensity)before,during and after rainy season in rocky desertification area,Bijie,Guizhou.Physicochemical properties and their correlation characteristics of different soils were analyzed.The results were as follows:In the soils with the same rocky desertification degree,the contents of soil organic matter,total phosphorus,available phosphorus,total nitrogen and hydrolysable nitrogen were all in order as during rainy season>after rainy season>before rainy season.With the deterioration of rocky desertification,soil retention ability,capillary retention ability,capillary porosity and total porosity of soil increased,and the contents of total phosphorus,available phosphorus and organic matter in soil decreased. Compared with the soil in potential rocky desertification degree,total nitrogen contents of soils in light rocky desertification,moderate rocky desertification and intensity rocky desertification increased by 5.6%,20.9% and 26.6%,respectively,and hydrolysable nitrogen contents of different soils increased by 3.5%,18.3% and 36.2%,respectively,total potassium contents of different soils increased by 15.8%,30%and 46.3%, respectively,available potassium contents of different soils increased by 3.9%,11.3% and 16.5%, respectively.Correlation analysis suggested that organic matter content,total phosphorus content,total nitrogen content,bulk density,total porosity and capillary retention ability correlated significantly (p< 0.05),and organic matter content,total nitrogen content,bulk density and total porosity correlated extreme significantly(p<0.01).These results can provide theoretical and scientific basis for the comprehensive control of rocky desertification.
中文关键词	石漠化 ; 土壤理化性质 ; 贵州
英文关键词	rocky desertification physicochemical properties of soil Guizhou
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:6057186
来源机构	贵州师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236675
作者单位	贵州师范大学喀斯特研究院, 国家喀斯特石漠化防治工程技术研究中心, 贵阳, 贵州 550001, 中国
推荐引用方式 GB/T 7714	李开萍,刘子琦,李渊,等. 贵州毕节地区不同石漠化程度土壤理化性质特征[J]. 贵州师范大学,2017,31(4):205-210.
APA	李开萍,刘子琦,李渊,肖杰,董晓超,&曹洋.(2017).贵州毕节地区不同石漠化程度土壤理化性质特征.水土保持学报,31(4),205-210.
MLA	李开萍,et al."贵州毕节地区不同石漠化程度土壤理化性质特征".水土保持学报 31.4(2017):205-210.