干旱区生态环境知识资源中心(Arid): 扬黄灌区土壤质量早期变化的综合评价与分析

Arid

	扬黄灌区土壤质量早期变化的综合评价与分析
其他题名	Assessment and analysis of early dynamic changes of cropland soil quality in Yanghuang irrigated area in Ningxia
	曲文杰; 宋乃平; 杨新国
来源期刊	干旱地区农业研究
ISSN	1000-7601
出版年	2015
卷号	33 期号:4 页码:273-278
中文摘要	以12个直接变量和3个间接变量为土壤质量评价指标体系,采用土壤质量指数法,对宁夏红寺堡扬黄灌区绿洲农田土壤质量早期动态变化进行了综合评价与分析。研究表明:在0~9年间,不同土壤变量的变化趋势不尽相同,其中土壤总有机碳从1.42 g·kg~(-1)增长到4.48 g·kg~(-1),活性有机碳从0.31 g·kg~(-1)增长到1.00 g·kg~(-1),阳离子交换量从4.30 cmol·kg~(-1)增长到7.65 cmol·kg~(-1),钙磷比从4.13增长到12.46,粉粒含量从10.32%增长到20.50%,粘粒含量从15.09%增长到34.73%,都呈显著的单调线性增长趋势;而可溶性总盐从1.20 g·kg~(-1)降低到0.49 g·kg~(-1)、砂粒从74.60%降低到44.77%,呈显著的单调下降趋势;其他变量则表现出波动变化或相对稳定的格局。主成分分析把12个土壤变量归为土壤肥力和土壤离子环境两个主成分,在此基础上构建的土壤质量指数0~9年间的变化呈现出典型的S型增长曲线格局,其中钙磷比、CEC、总有机碳的动态与土壤质量指数变化最为相似。
英文摘要	This research was implemented to acknowledge thoroughly the early dynamics,characteristics and driving processes of soil quality in Yanghuang irrigation oasis farmland of northwest China,searching for a proper way in comprehensively assessing the soil quality and providing a theoretical basis for the healthy and sustainable utilization of soil in the irrigated area. The soil quality index method was employed using soil quality evaluation index system including 12 direct variables and three indirect variables. Our research showed that within 0 ~ 9 years,the trends of different soil variables varied,including soil organic carbon (from 1.42 g·kg~(-1) to 4.48 g·kg~(-1)),active organic carbon (from 0.31 g·kg~(-1) to 1.00 g·kg~(-1)),cation exchange capacity (from 4.30 cmol·kg~(-1) to 7.65 cmol·kg~(-1)),calcium and phosphorus ratio (from 4.13 to 12.46),silt (from 10.32% to 20.50%) and clay content (from 15.09% to 34.73%). All these variables displayed an increasing tendency. However,total soluble salt (from 1.20 g·kg~(-1) to 0.49 g·kg~(-1)),sand (from 74.60% to 44.77%) tended to become declined sharply,while other variables were relatively stable or fluctuated. A Principal component analysis had classified 12 variables into two main groups as the soil fertility and the soil ion environment. Based on this,soil quality indexes changes showed a typical S-shaped curve pattern within 0 ~ 9 years,among which the dynamics of phosphorus ratio, CEC,total organic carbon and the changes of soil quality were mostly similar.
中文关键词	土壤质量动态变化 ; 综合评价 ; 扬黄灌区 ; 绿洲农田
英文关键词	Soil quality change Comprehensive assessment Yellow River irrigation area Oasis farmland
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:5482320
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232618
作者单位	宁夏大学, 西北土地退化与生态恢复国家重点实验室培育基地, 银川, 宁夏 750021, 中国
推荐引用方式 GB/T 7714	曲文杰,宋乃平,杨新国. 扬黄灌区土壤质量早期变化的综合评价与分析[J]. 宁夏大学,2015,33(4):273-278.
APA	曲文杰,宋乃平,&杨新国.(2015).扬黄灌区土壤质量早期变化的综合评价与分析.干旱地区农业研究,33(4),273-278.
MLA	曲文杰,et al."扬黄灌区土壤质量早期变化的综合评价与分析".干旱地区农业研究 33.4(2015):273-278.