^pof;
Education;
Key;
Laboratory;
for;
Earth;
System;
Modeling,;
and;
Center;
for;
Earth;
System;
Science,;
Tsinghua;
University,;
Beijing;
100084,;
China;
^pInstitute;
of;
Remote;
Sensing;
Applications,;
Chinese;
Academy;
of;
Sciences,;
Beijing;
100101,;
China;
土壤水分变化; 被动微波遥感; 中国西北; 时空变化; 表层; 半干旱地区; 干燥地区; 区域覆盖;