干旱区生态环境知识资源中心(Arid): 干旱区土壤盐渍化灾害预警以渭-库绿洲为例

Arid

	干旱区土壤盐渍化灾害预警以渭-库绿洲为例
其他题名	Soil Salinization Disaster Warning in Arid Zones: A case study in the Ugan-Kuqa Oasis
	丁建丽1 ; 陈文倩 1; 陈芸 2
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2016
卷号	36 期号:4 页码:1079-1086
中文摘要	针对中国西北干旱区普遍存在的土壤盐渍化,以渭干河-库车河绿洲TM影像数据,建立BP神经网络结合Adaboost算法的土壤盐渍化预警度评价模型。首先,根据研究区实际情况设置该模型的4个预警指标(地下水埋深、海拔、盐分指数、归一化干旱指数),分别提取其连续表面信息,结合BP神经网络作为弱预测器进行预测,将通过不同训练集得到的弱预测器结果结合成强预测器。在利用该模型训练样本时,依据各评价因子对分类结果的贡献率调整其权重,预测的结果能客观反映每个评价因子对该地区土壤盐渍化的贡献程度。结果表明,研究区警情总体情况较严重,绿洲北部内部耕地周围的荒地以及含水量少的区域,盐渍化危险度较高。
英文摘要	Aiming at the prevailing northwest arid zone of soil salinization,the paper selected the Ugan-Kuqa River Oasis as studied area and TM image as data source to establish BP neural network combined with Adaboost algorithm evaluation soil salinization warning model.First,according to the actual conditions of the area set up four warning indicators of the model:groundwater depth,elevation,salinity index,normalized Drought Index,and extracted its continuous surface information,made BP neural network as a weak predictor to predict,different training obtained results are combined into a strong predictor when using the model of training samples,according to the classification results of each evaluation factor in the share of the contribution rate to adjust their weights,the predicted outcome will be fair objectively reflect each evaluation factor’ s contribution for the soil salinization in the region,the experimental results show that the overall situation in the study area is more serious alarm,wasteland and water content inside a small area of arable land around the northern oasis,salinization have hazard higher degree.This paper from the point of view of soil salinization warning to conduct a preliminary study and lay a foundation for further study in the future salinization warning.
中文关键词	干旱区 ; 盐渍化 ; 预警 ; Adaboost预测器
英文关键词	BP arid zone salinization warning BP Adaboost predictor
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5821345
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/2XILL650/235429
作者单位	1.新疆大学资源与环境科学学院, 绿洲生态教育部重点实验室, 乌鲁木齐, 新疆 830046, 中国; 2.澳大利亚联邦科学与工业研究组织水土资源研究所, 堪培拉, VIC 3169, 澳大利亚
推荐引用方式 GB/T 7714	丁建丽,陈文倩,陈芸. 干旱区土壤盐渍化灾害预警以渭-库绿洲为例[J]. 新疆大学,2016,36(4):1079-1086.
APA	丁建丽,陈文倩,&陈芸.(2016).干旱区土壤盐渍化灾害预警以渭-库绿洲为例.中国沙漠,36(4),1079-1086.
MLA	丁建丽,et al."干旱区土壤盐渍化灾害预警以渭-库绿洲为例".中国沙漠 36.4(2016):1079-1086.