Analysis of the Dielectric Constant of Saline-Alkali Soils and the Effect on Radar Backscattering Coefficient: A Case Study of Soda Alkaline Saline Soils in Western Jilin Province Using RADARSAT-2 Data

<table>Effect of frequency on the dielectric constant at a salinity of <svg height="11.75" id="M74" style="vertical-align:-0.23825pt" version="1.1" viewbox="0 0 34.5 11.75" width="34.5" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,11.15)"><path d="M285 378v-2q65 -13 102 -54.5t37 -97.5q0 -57 -30.5 -104.5t-74 -75t-85.5 -42t-72 -14.5q-31 0 -59.5 11t-40.5 23q-19 18 -16 36q1 16 23 33q13 10 24 0q58 -51 124 -51q55 0 88 40t33 112q0 64 -39 96.5t-88 32.5q-29 0 -64 -11l-6 29q77 25 118 57.5t41 84.5
q0 45 -26.5 69.5t-68.5 24.5q-67 0 -120 -79l-20 20l43 63q51 56 127 56h1q66 0 107 -37t41 -95q0 -42 -31 -71q-22 -23 -68 -54z" id="x33"></path></g><g transform="matrix(.017,-0,0,-.017,8.222,11.15)"><path d="M241 635q53 0 94 -28.5t63.5 -76t33.5 -102.5t11 -116q0 -58 -11 -112.5t-34 -103.5t-63.5 -78.5t-94.5 -29.5t-95 28t-64.5 75t-34.5 102.5t-11 118.5q0 58 11.5 112.5t34.5 103t64.5 78t95.5 29.5zM238 602q-32 0 -55.5 -25t-35.5 -68t-17.5 -91t-5.5 -105
q0 -76 10 -138.5t37 -107.5t69 -45q32 0 55.5 25t35.5 68.5t17.5 91.5t5.5 105t-5.5 105.5t-18 92t-36 68t-56.5 24.5z" id="x30"></path></g><g transform="matrix(.017,-0,0,-.017,16.381,11.15)"><path d="M586 629l-403 -661l-31 23l402 661zM192 635q47 0 80.5 -28.5t47.5 -67.5t14 -81q0 -67 -37 -122t-106 -55q-68 0 -105 54.5t-37 121.5q0 69 37 123.5t106 54.5zM192 606q-28 0 -44.5 -28t-21 -57.5t-4.5 -61.5q0 -22 3 -45t10 -48t22 -41t36 -16t36 16t21 42t8.5 47.5
t2.5 43.5q0 148 -69 148zM554 343q68 0 104.5 -55t36.5 -123q0 -67 -37 -122t-105 -55q-69 0 -106 55t-37 122q0 68 37 123t107 55zM876 343q68 0 105 -55t37 -123q0 -67 -37 -122t-106 -55q-68 0 -105 55t-37 122q0 42 14.5 81.5t48 68t80.5 28.5zM553 314q-21 0 -36 -15.5
t-22 -40.5t-9.5 -47t-2.5 -45q0 -22 3 -44.5t9.5 -48t22 -41t36.5 -15.5t35.5 16t21 41.5t9 47t2.5 43.5q0 23 -2.5 45t-9 47.5t-21.5 41t-36 15.5zM875 314q-21 0 -35.5 -15.5t-21.5 -40.5t-9.5 -47t-2.5 -45q0 -22 2.5 -44.5t9.5 -48t22 -41t36 -15.5t36 16t21.5 41.5
t9 47t2.5 43.5q0 23 -2.5 44.5t-9 47.5t-21.5 41.5t-37 15.5z" id="x2030"></path></g>
</svg> (a) and 60<svg height="11.75" id="M75" style="vertical-align:-0.23825pt" version="1.1" viewbox="0 0 18.174999 11.75" width="18.174999" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,11.15)"><path d="M586 629l-403 -661l-31 23l402 661zM192 635q47 0 80.5 -28.5t47.5 -67.5t14 -81q0 -67 -37 -122t-106 -55q-68 0 -105 54.5t-37 121.5q0 69 37 123.5t106 54.5zM192 606q-28 0 -44.5 -28t-21 -57.5t-4.5 -61.5q0 -22 3 -45t10 -48t22 -41t36 -16t36 16t21 42t8.5 47.5
t2.5 43.5q0 148 -69 148zM554 343q68 0 104.5 -55t36.5 -123q0 -67 -37 -122t-105 -55q-69 0 -106 55t-37 122q0 68 37 123t107 55zM876 343q68 0 105 -55t37 -123q0 -67 -37 -122t-106 -55q-68 0 -105 55t-37 122q0 42 14.5 81.5t48 68t80.5 28.5zM553 314q-21 0 -36 -15.5
t-22 -40.5t-9.5 -47t-2.5 -45q0 -22 3 -44.5t9.5 -48t22 -41t36.5 -15.5t35.5 16t21 41.5t9 47t2.5 43.5q0 23 -2.5 45t-9 47.5t-21.5 41t-36 15.5zM875 314q-21 0 -35.5 -15.5t-21.5 -40.5t-9.5 -47t-2.5 -45q0 -22 2.5 -44.5t9.5 -48t22 -41t36 -15.5t36 16t21.5 41.5
t9 47t2.5 43.5q0 23 -2.5 44.5t-9 47.5t-21.5 41.5t-37 15.5z" id="x2030"></path></g>
</svg> (b).</table>

The Scientific World Journal

fig5

Figure 5

Figure 5: Analysis of the Dielectric Constant of Saline-Alkali Soils and the Effect on Radar Backscattering Coefficient: A Case Study of Soda Alkaline Saline Soils in Western Jilin Province Using RADARSAT-2 Data 

Figure 5 | Analysis of the Dielectric Constant of Saline-Alkali Soils and the Effect on Radar Backscattering Coefficient: A Case Study of Soda Alkaline Saline Soils in Western Jilin Province Using RADARSAT-2 Data 