干旱区生态环境知识资源中心(Arid): 碱化土壤的野外及实验室波谱响应特征及其转换

Arid

	碱化土壤的野外及实验室波谱响应特征及其转换
其他题名	Characteristics of laboratory-field measured spectra responding to alkalinized soil and conversion
	张芳 1; 熊黑钢2 ; 丁建丽1 ; 夏倩柔 1
来源期刊	农业工程学报
ISSN	1002-6819
出版年	2012
卷号	28 期号:5 页码:101-107
中文摘要	为了探讨不同测量环境下碱化土壤波谱相互转换的条件和规律,对新疆天山北坡奇台绿洲碱化土壤进行定点野外、实验室波谱测量及特征分析,并结合土壤理化性质,利用多元线性回归方法进行野外-实验室测量波谱之间的双向转换。结果表明:野外测量波谱与土壤pH值呈极显著的正相关关系,可有效监测土壤碱化程度。但实验室测量波谱与pH值之间不具有相关性。pH值对实验室测量波谱向野外测量波谱的转换影响最大,其次是实验室波谱的b3(630~690nm)和b2(521~600nm)波段反射率,而b1(450~520nm)、b4(760~900nm)波段反射率与野外测量波谱的各波段反射率之间均无明显对应关系。实验室测量波谱与有机质含量呈负相关关系,且对于土壤有机质具有良好的定量反演潜力。实验室波谱向野外波谱转换的模型涉及的因子较少,稳定性高且具有良好验证精度,转换效果较野外波谱向实验室波谱转换的模型理想。
英文摘要	To explore the conditions and rules of conversions between spectra of alkalinized soil under different measure environments,the paper investigated the laboratory-measured and field-measured spectra of alkalinized soil within the Qitai oasis at the northern slope area of Tianshan Mountain in Xinjiang.Based on the analysis of the characteristics of the laboratory-measured and field-measured spectra and physicochemical properties of alkalinized soil at the study spots,the spectral transformation between the laboratory-measured and field-measured spectra were built by multiple linear regression method.The results showed that there was a significant positive correlation between the field-measured spectra and the soil pH value,therefore soil alkalinization could be effectively monitored by using the field-measured spectra.Although the correlation between the laboratory-measured spectra and the soil pH value was insignificant,pH value has the greatest impact on the conversion from the laboratory-measured spectra to the field-measured spectra,followed by the band3(630-690 nm) and the band2(520-600 nm) of the laboratory-measured spectra.The laboratory-measured spectra of band1(450-520 nm) and band4(760-900 nm) had no significant correlations with the field-measured spectra of the band1(450-520 nm),band2(520-600 nm),band3(630-690 nm) and band4(760-900 nm).The laboratory-measured spectra were significantly negatively correlated to the soil OM(organic matter),therefore the laboratory-measured spectra had the potential for estimating the quantitative retrieval of the soil OM.The model for laboratory-to-field spectral measurement transformation was less complex with fewer variables,more stability and higher verified accuracy,so it was better than the model for filed-to-laboratory spectral transformation.
中文关键词	波谱分析 ; 测量 ; 土壤 ; 野外测量波谱 ; 实验室测量波谱 ; 波谱转换
英文关键词	spectrum analysis measurements soils field-measured spectrum laboratory-measured spectrum spectrum transformation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	REMOTE SENSING ; ENVIRONMENTAL SCIENCES
WOS研究方向	Remote Sensing ; Environmental Sciences & Ecology
CSCD记录号	CSCD:4462206
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/2XILL650/228328
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.北京联合大学应用文理学院, 绿洲生态教育部重点实验室, 北京 100083, 中国
推荐引用方式 GB/T 7714	张芳,熊黑钢,丁建丽,等. 碱化土壤的野外及实验室波谱响应特征及其转换[J]. 新疆大学,2012,28(5):101-107.
APA	张芳,熊黑钢,丁建丽,&夏倩柔.(2012).碱化土壤的野外及实验室波谱响应特征及其转换.农业工程学报,28(5),101-107.
MLA	张芳,et al."碱化土壤的野外及实验室波谱响应特征及其转换".农业工程学报 28.5(2012):101-107.