干旱区生态环境知识资源中心(Arid): 荒漠胡杨叶片含水率的高光谱反演

Arid

	荒漠胡杨叶片含水率的高光谱反演
其他题名	Spectral Characteristics Model of Desert Populus euphratica Leaves’ Water Content
	宋玉 1; 塔西甫拉提·特依拜 1; 李崇博 2; 侯艳军 1; 阿尔达克 1; 张飞1
来源期刊	西北农业学报
ISSN	1004-1389
出版年	2016
卷号	25 期号:2 页码:311-316
中文摘要	该研究对新疆艾比湖流域进行实地野外调查,并选取典型荒漠植被胡杨,在室外测定胡杨叶片光谱反射率,将光谱数据经处理后分析光谱反射率与叶片含水率的相关性,运用逐步多元线性回归法,建立胡杨叶片含水率高光谱估算模型,并由均方根误差(RMSE)、决定系数(R~2)和残留预测偏差(RPD)来检验模型的预测能力和稳定性。结果表明:逐步多元线性回归法建立的模型适合于艾比湖流域胡杨叶片的含水率高光谱估算。反射率一阶微分光谱是检验胡杨叶片含水率较好的指标,检验R~2高达0.92、RMSE为0.013、RPD为3.13。
英文摘要	To estimate leaves’ water content by reflectance spectra and to improve the accuracy of estimation through different kinds of pre-processing methods, so it provides a reference for recovery and estimate of the ecological environment in study area. In this paper,the correlation between leaves spectrum and its water content was analyzed in the field of measurement and analysis of leaves spectrum. Desert Populus euphratica was collected from the Ebinur Lake catchment, and hyperspectral models for estimating leaves’ water content were established by stepwise multiple linear regression. Then root mean squared error(RMSE) was introduced to test the predictability and precision of the models, and coefficient of the determination(R~2), and predicting residual deviation(RPD) was used to evaluate stability of the models. The results showed that stepwise multiple linear regression(SMLR) is the optimal model for establishing relationship between leaves spectrum and leaves’ water content.FDR is optimal index for predicting leaves’ water content,which R~2 is 0.92, RMSE 0.013 and RPD 3.13.
中文关键词	高光谱 ; 胡杨 ; 叶片含水率 ; 逐步多元线性回归
英文关键词	Hyperspectral Populus euphratica Leaves’ water content SMLR
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5629951
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/2XILL650/235143
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.新疆维吾尔自治区地质调查院, 乌鲁木齐, 新疆 830000, 中国
推荐引用方式 GB/T 7714	宋玉,塔西甫拉提·特依拜,李崇博,等. 荒漠胡杨叶片含水率的高光谱反演[J]. 新疆大学,2016,25(2):311-316.
APA	宋玉,塔西甫拉提·特依拜,李崇博,侯艳军,阿尔达克,&张飞.(2016).荒漠胡杨叶片含水率的高光谱反演.西北农业学报,25(2),311-316.
MLA	宋玉,et al."荒漠胡杨叶片含水率的高光谱反演".西北农业学报 25.2(2016):311-316.