干旱区生态环境知识资源中心(Arid): 黔中典型喀斯特地区土壤水分时空特性分析

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	黔中典型喀斯特地区土壤水分时空特性分析
其他题名	Space-time characteristics of soil moisture in the central Guizhou typical karst area
	范新瑞 1; 苏维词 1; 鄢贵权 2; 洪彩霞 3
ISSN	1001-4810
出版年	2009
卷号	28 期号:1 页码:69-73
中文摘要	土壤水分是岩溶山区植被恢复和生态环境建设的关键性限制因素.利用黔中喀斯特普定石漠化研究基地的采样分析数据,用回归模型分析了不同利用类型(坡面、洼地)0～50cm土壤水分的动态变化规律;探讨了土壤水分空间变化的影响因子.结果表明,坡面和洼地土壤水分呈现弱变异特征,其中坡面土壤水分变异程度相对较大,变程分别是30.4～24.5和30.4～26.2.在剖面上,两者的垂直变异趋势大致相反,坡面土壤水分变异系数随土层的加深而增大;而洼地由于受外界自然条件的干扰相对较小,变异系数随着土层深度的增加而减小,而且其中的不同土地利用类型都是在40～50cm处达到最小.研究显示,植被覆盖度提高后土壤总体上朝着有利于水分保蓄和植被恢复的方向转变.
英文摘要	Soil moisture is the critical factor for vegetation rehabilitation and ecological environment construction in karst mountainous region. Sampling data from the Puding Stone-Desertification Research Base in central Guizhou is used in the paper. The Regression Model is used to analyze the regime of the soil moisture between 0～50cm under different land-use style(slope, depression). The impact factor on spatial variation of the soil moisture is also studied. The results show that soil moisture on the slope and in the depression present weak mutation characteristics and the vertical variation on the slope is contrary to that in the depression approximately. It is found that soil moisture on the slope increases with the soil depths and variation extent is relatively larger than that in the depression. The variation ranges are 30. 4～24. 5cm and 30. 4～26. 2cm. There are some differences in vertical variation under different land-use types. The coefficient of variation decreases with the soil depths. Both of them reach the lowest between 40 and 50cm. On the whole, the research shows that with the increase of the vegetation coverage the soil becomes more beneficial to water conservation and vegetation restoration.
中文关键词	土壤水分 ; 变异系数 ; 影响因子 ; 回归方程 ; 黔中喀斯特地区
英文关键词	soil moisture coefficient of variation impact factor regression equation the central Guizhou karst region
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:3519485
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224616
作者单位	1.贵州大学,资源与环境工程学院, 贵阳, 贵州 550003, 中国; 2.贵州科学院, 贵阳, 贵州 550025, 中国; 3.许昌龙岗发电有限责任公司, 禹州, 河南 461690, 中国
推荐引用方式 GB/T 7714	范新瑞,苏维词,鄢贵权,等. 黔中典型喀斯特地区土壤水分时空特性分析[J],2009,28(1):69-73.
APA	范新瑞,苏维词,鄢贵权,&洪彩霞.(2009).黔中典型喀斯特地区土壤水分时空特性分析.,28(1),69-73.
MLA	范新瑞,et al."黔中典型喀斯特地区土壤水分时空特性分析".28.1(2009):69-73.