JOURNAL OF NATURAL RESOURCES ›› 2014, Vol. 29 ›› Issue (4): 702-708.doi: 10.11849/zrzyxb.2014.04.014

• Resources Research Methods • Previous Articles     Next Articles

Spatial Heterogeneity of Soil Line Parameters and Analysis of Influencing Factors Based on Remote Sensing Image

WU Jie1, LI Yu-huan1, LI Zeng-bing2   

  1. 1. National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, China;
    2. The Bureau of Land and Resource of Changyi City, Changyi 261300, China
  • Received:2013-03-09 Revised:2013-08-09 Online:2014-04-20 Published:2014-04-20
  • Contact: 李玉环(1965-),女,山东诸城人,副教授,硕士生导师。E-mail:yuhuan@sdau.edu.cn E-mail:yuhuan@sdau.edu.cn
  • About author:10.11849/zrzyxb.2014.04.014

Abstract:

Soil line not only can reflect the optical properties of the soil to provide a basis for soil remote sensing classification but also can be used to calculate the vegetation index to weaken the soil background information and improve the precision of vegetation remote sensing monitoring. However, there are many influencing factors, in order to improve the extraction accuracy of soil line, calculating the soil line parameters under different soil influencing factors and exploring the spatial patterns of soil line are becoming more and more critical. In this paper, we chose the soil in Tancheng County of Shandong Province as the research object, and selected the two biggest factors include soil types and soil organic matter contents which can affect soil line to be involved in analysis. We analyzed the changes of soil line parameters under different soil types, the results showed that: different types of soil had different soil lines, for the five soil classes in the study area, the size of the soil line parameters varied as follows: fluvo-attic soil had the maximum soil line slope (1.4996), followed by paddy soil, brown soil, mortar black soil, the smallest was cinnamon (1.2293), the relationship of intercept was in contrast with the slope. Under the same soil types we analyzed the influences of soil organic matter on soil line parameters, the results showed that in different organic matter zones, the soil line parameters were different, with the increase of organic matter content, the slope of the soil line increased but the intercept decreased. By comprehensive analyzing the spatial patterns of soil line we could get some conclusions as follows: With the changes of soil types, the slope of the soil line in the study was that it first increased and then decreased from west to east and had a gradual increasing trend from north to the south, at the same time it had a certain zonality law; under the same soil type, the soil line slope had a gradual increasing trend from the center to the edge but the intercept had a decreasing trend with the increase of soil organic matter content.

Key words: remote sensing, bare soil, soil line, Tancheng County of Shandong Province

CLC Number: 

  • TP79