基于TM数据的黑土有机质含量空间格局反演研究
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国家“十二五”科技支撑计划项目(2013BAC09B01,2012BAD14B05)、吉林省科技厅重点科技成果转化项目(20130303035NY)和吉林农业大学科研启动基金项目(201322)资助


Inversion of spatial pattern of organic matter contents in black soil based on TM Data
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    摘要:

    以吉林省黑土区为例,采集区域土壤样本,获取Landsat TM遥感影像,基于有机质含量(SOM)与土壤反射率的定量关系,筛选出与土壤有机质分布相关的波段TM1、TM5,建立区域土壤有机质遥感预测模型。结果表明,表层土壤有机质含量的对数值与TM1、TM5的灰度值(Digital Number,DN)呈显著负相关关系,满足二次多项式回归关系,基于TM1、TM5波段DN值的回归模型预测研究区表层土壤有机质含量,结果可靠。研究区表层土壤有机质含量<15 g kg-1的区域主要分布在东部地区,含量在15~20 g kg-1的区域主要分布在中部地区,含量在20~25 g kg-1的土壤主要集中在西部地区。调查表明东部地区和中部地区主要是典型黑土,地形部位较高,排水条件较好;西部地区主要是草甸黑土,地势平坦,地下水位适中,水分条件充足,有机质含量较高。

    Abstract:

    Soil samples were collected in the black soil region of Jilin Province and corresponding Landsat TM remote sensing images of the region were acquired. Based on the quantitative relationship between content of soil organic matter (SOM) and soil spectral reflectance, SOM distribution related bands, TM1 and TM5, were screened out and a regional remote sensing-based soil organic matter prediction model was built. Results show that logarithm values of the surface soil organic matter content in study area was in a significantly negative relationship with the DN(Digital Number) values of TM1 and TM5, which met the two polynomial regression. Based on the DN values of TM1 and TM5, the model was used to predict soil organic matter contents in the surface soil layer of the region with sound reliability. The soils with SOM < 15 g kg-1 in the surface layer were mainly distributed in the eastern part of the region, those with SOM content ranging between 15 and 20 g kg-1 mainly in the central part, and those between 20 and 25 g kg-1 mainly in the western part. The investigation indicates that the soils in the eastern and central parts of the region are mainly typical black soils, high in terrain position and hence good in drainage, while those in the western part are mainly meadow black soils, flat in landform, moderate in groundwater table and adequate in soil moisture, and hence high in organic matter content.

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宋金红,吴景贵,赵欣宇,曹 玲.基于TM数据的黑土有机质含量空间格局反演研究[J].土壤学报,2015,52(6):1422-1429. DOI:10.11766/trxb201410300549 Song Jinhong, Wu Jinggui, Zhao Xinyu, Cao Ling. Inversion of spatial pattern of organic matter contents in black soil based on TM Data[J]. Acta Pedologica Sinica,2015,52(6):1422-1429.

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  • 收稿日期:2014-10-30
  • 最后修改日期:2015-07-30
  • 录用日期:2015-08-18
  • 在线发布日期: 2015-08-31
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