地基微波遥感评估黄河源区草原下垫面土壤冻融过程研究

蒋雨芹,文军,吕少宁,王作亮,刘闻慧,武月月,邓浩

Study on evaluating soil freeze/thaw process of grassland underlying surface in source region of the Yellow River by using ground-based microwave remote sensing

Yuqin JIANG,Jun WEN,Shaoning LÜ,Zuoliang WANG,Wenhui LIU,Yueyue WU,Hao DENG

表2 玛曲观测场2017—2018年土壤各冻融过程阶段的起止日期和持续日数

Table 2 Start and end time and number of days of each freeze/thaw process stage of the soil at the Maqu Observatory during 2017—2018

土壤冻融过程阶段 起止日期（年-月-日） 持续日数/d 开始日期 结束日期 完全融化 — 2017-11-23 — 开始冻结至完全冻结 2017-11-24 2017-12-16 23 完全冻结 2017-12-17 2018-02-16 68 开始融化至完全融化 2018-02-17 2018-04-01 44 完全融化 2018-04-02 — —