干旱区生态环境知识资源中心(Arid): 不同粒径土壤的反射光谱对荒漠土壤有机质含量的响应

Arid

	不同粒径土壤的反射光谱对荒漠土壤有机质含量的响应
其他题名	Response of Soil Hyperspectral Characteristics of Different Particle Sizes to Soil Organic Matter
	武红旗; 范燕敏; 何晶; 靳瑰丽; 谢昀; 柴大攀; 何龙
来源期刊	草地学报
ISSN	1007-0435
出版年	2014
卷号	22 期号:2 页码:266-270
中文摘要	为研究荒漠土壤有机质的高光谱诊断技术,分析了不研磨土样与2 mm土样的高光谱反射特征及与有机质含量的相关性。结果表明:不研磨土样的原始反射光谱在365.0~449. 2 nm和567. 8~799. 8 nm与土壤有机质成极显著负相关。反射光谱经数学变换后,扩展了与有机质极显著相关的波段范围,2 mm土样光谱反射率与有机质的最大相关系数(\|r\|=0.420)高于不研磨土样(\| r \| =0.351)。2 mm 土样光谱经一阶微分变换后,在569.2 nm 和1141.5 nm建立的土壤有机质含量预测模型精度较高,但是当有机质含量低于9 g· kg~(-1)时,预测精度较差。
英文摘要	In order to study the hyperspectral diagnostic method of desert soil organic matter, the hyperspectral reflectance characteristics of both no-grinded and 2 mm particle size samples as well as their correlation with organic matter content were analyzed. Results showed that the original spectral reflectance of no-grinded sample had very significantly negative correlation with soil organic matter in 365. 0~449.2 nm and 449.2 ~567.8 nm. The reflectance of mathematical transformation expanded the scope of related band. The maximum correlation coefficient between the spectral reflectance of 2 mm sample and soil organic matter (\| r \| =0.420) was higher than that between the spectral reflectance of no-grinded sample and soil organic matter (\| r \| = 0.351). By first-order differential transformation of 2 mm sample spectral reflectance, the hyperspectral prediction model of desert soil organic matter was developed in 569.2 nm and 1141.5 nm, the prediction precision of soil organic matter content was higher, but the prediction accuracy was poor when the organic matter content was less than 9 g ? kg~(-1).
中文关键词	高光谱反射特征 ; 土壤粒径 ; 土壤有机质 ; 预测
英文关键词	Hyperspectral reflectance characteristics Soil particle size Soil organic matter Prediction
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5112118
来源机构	新疆农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230818
作者单位	新疆农业大学草业与环境科学学院, 乌鲁木齐, 新疆 830052, 中国
推荐引用方式 GB/T 7714	武红旗,范燕敏,何晶,等. 不同粒径土壤的反射光谱对荒漠土壤有机质含量的响应[J]. 新疆农业大学,2014,22(2):266-270.
APA	武红旗.,范燕敏.,何晶.,靳瑰丽.,谢昀.,...&何龙.(2014).不同粒径土壤的反射光谱对荒漠土壤有机质含量的响应.草地学报,22(2),266-270.
MLA	武红旗,et al."不同粒径土壤的反射光谱对荒漠土壤有机质含量的响应".草地学报 22.2(2014):266-270.