田间行走式测定的红外光谱数据与土壤质地之间的相关性研究  

Study on Relationship between On-the-Go Near-Infrared Spectroscopy and Soil Texture

作　　者：沈掌泉[1] Oi Jiaguo Huang Xuewen 单英杰 王珂[1] 

机构地区：[1]浙江大学环境与资源学院,浙江杭州310029 [2]密歇根州立大学地理系,美国密歇根东兰辛48824 [3]密歇根州立大学作物与土壤科学系,美国密歇根东兰辛48824 [4]浙江省土肥站,浙江杭州310020

出　　处：《光谱学与光谱分析》2009年第6期1526-1530,共5页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(40201021);国家科技支撑计划项目(2006BAD10A07)资助

摘　　要：近红外光谱是利用漫反射来分析物质的某些化学性质,已在农业及其他许多领域得到广泛应用。尽管在实验室条件下,研究证明可以应用近红外光谱分析技术来快速、方便地测定土壤参数,但在田间大范围内应用红外光谱快速测定来分析土壤性质,仍然缺乏研究;该研究以田间行走式设备获取的红外光谱数据为基础,分析和比较了不同数据处理技术下红外光谱信息与土壤质地之间的相关性,发现应用基于算术运算的波段组合技术可以明显地提高红外光谱信息与土壤质地之间的相关性,为田间光谱数据的分析处理与应用提供了依据。Near infrared spectroscopy （NIRS） is a rapid, proximal-sensed method that has proven useful in quantifying soil constituents mainly in laboratory. However, very little is known about how NIRS performs in a field setting by newly developed onthe-go NIRS measurements. The objective of the present study was to evaluate the relationship between on-the-go field NIRS measurements and soil texture in a glacial till soil. It was found that NIRS band combination based on difference, normalized difference and ratio could apparently improve the coefficient of relationship between NIRS and soil texture, and this might be a new and effeetive analytical procedure for field NIRS measurements.

关 键 词：近红外光谱 土壤质地 行走式测定 

分 类 号：S123[农业科学—农业基础科学] TH744.1[机械工程—光学工程]