干旱区生态环境知识资源中心(Arid): 干旱区平原水库下游盐渍化土壤光谱时空分布特征分析

Arid

	干旱区平原水库下游盐渍化土壤光谱时空分布特征分析
其他题名	Analysis of the Spatial and Temporal Distribution Characteristics of Soil Spectrum in the Salinization Soil of the Reservoir Downstream in Arid Area Plain
	李荣荣 1; 熊黑钢2 ; 段鹏程 1; 张录 1
来源期刊	土壤通报
ISSN	0564-3945
出版年	2016
卷号	47 期号:3 页码:532-536
中文摘要	以2002年、2007年Landsat5影像和2013年Landsat8影像为数据源,通过ENVI和ArcGIS对遥感影像进行校正和处理并提取采样点的土壤反射率盐分指数对12年来柳城子水库下游土壤盐渍化时空变化特征进行分析,结果表明:①2002 ~ 2013年,土壤平均反射率盐分指数逐年升高2002年(0.164) < 2007年(0.183) < 2013年(0.206);②在0 ~ 1200 m范围内土壤SI_1(盐分指数)表现为2013 > 2007 > 2002年,但在1200 ~ 2400 m变幅较小,各年盐渍化趋于稳定;③2002、2007、2013年SI_1具有强烈空间相关性,空间自相关变化尺度逐年增加,表明区域因素(地下水)对土壤盐渍化空间变异性影响逐渐增长并向下游不断扩展;④在研究时段内,由于水库蓄水量的增加(2007年库容由2002年410~6 m~3扩建为610~6 m~3),水库对下游土壤盐渍化的影响不断增强,导致其盐渍化程度逐渐加剧。2013年比2002年轻度、中度盐渍化土壤面积分别减少69.44%、37.57%,而重度盐渍化、盐土则从无到有分别增加了722589.71 m~2、1941395.51 m~2 。不论是空间上,还是时间上,水库下游土壤盐渍化状况总体趋于更加恶化。
英文摘要	Taken Landsat 5 images in 2002, 2007 and Landsat 8 images in 2013 as data sources, this paper calibrated and processed the remote sensing images by ENVI and ArcGIS and extracted the soil reflectance index of sampling points, analyzed the spatial-temporal variation characteristics of soil salinization for 12 years in Liuchengzi Reservoir downstream. Results showed that: (1) From 2002 to 2013, the average of reflectance index of soil salt (SI_1) increased year by year: in 2002 (0.164) < in 2007(0.183) < in 2013 (0.206); (2) At 0 ~ 1200 m distance, the SI_1 value decreased following the order of: in 2013 > in 2007 > in 2002, but at 1200 ~ 2400 m distance its change was small with years and it tended to be stable; (3) In 2002, 2007, and 2013, SI_1 had strong spatial correlation and the change scale increased year by year, which suggested that the impact of regional factors (groundwater) on the spatial variation of soil salinization gradually increased and expanded to downstream; (4) During the study period, the impact of reservoir on soil salinization in downstream was strengthened and further led to the aggravated salinization degree due to the increase in reservoirs pondage (capacity was expanded from 4 10~6 m~3 in 2002 to 6 10~6 m~3 in 2007). The area of mild and moderate salinization was reduced by 69.44% and 37.57%, respectively, while that of severe salinization and saline soil was increased by 722589.71 m~2 and 1941395.51 m~2, respectively in 2013 when compared with in 2002. Overall, soil salinization condition in the reservoir downstream tended to be even worse in spatial and temporal scale.
中文关键词	地统计学 ; 土壤盐渍化 ; 盐分指数 ; 平原水库
英文关键词	Geostatistics Soil salinization Salt index Plain reservoir
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY ; ENGINEERING MULTIDISCIPLINARY
WOS研究方向	Agriculture ; Engineering
CSCD记录号	CSCD:5758707
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235073
作者单位	1.新疆大学资源与环境科学学院, 教育部绿洲生态重点实验室, 乌鲁木齐, 新疆 830046, 中国; 2.北京联合大学应用文理学院城市系, 北京 100083, 中国
推荐引用方式 GB/T 7714	李荣荣,熊黑钢,段鹏程,等. 干旱区平原水库下游盐渍化土壤光谱时空分布特征分析[J]. 新疆大学,2016,47(3):532-536.
APA	李荣荣,熊黑钢,段鹏程,&张录.(2016).干旱区平原水库下游盐渍化土壤光谱时空分布特征分析.土壤通报,47(3),532-536.
MLA	李荣荣,et al."干旱区平原水库下游盐渍化土壤光谱时空分布特征分析".土壤通报 47.3(2016):532-536.