利用热脉冲技术测量土壤表层含水率-IngentaConnect.PDF

See discussions, stats, and author profiles for this publication at: /publication/275061697 Measuring soil water content in surface layer with heat-pulse technique Article in ongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering · January 2015 DOI: 10.3969/j.issn.1002-6819.2015.02.011 CITATIO READS 1 58 3 authors: Xiao Zhang Yueyue Wang Chinese Academy of Forestry China Agricultural University 13 PUBLICATIO S 41 CITATIO S 2 PUBLICATIO S 1 CITATIO SEE PROFILE SEE PROFILE Tusheng Ren China Agricultural University 114 PUBLICATIO S 1,5 3 CITATIO S SEE PROFILE Some of the authors of this publication are also working on these related projects: Assessment of agricultural drought in rainfed cereal production areas of northern China View project All content following this page was uploaded by Tusheng Ren on 16 January 2016. The user has requested enhancement of the downloaded file. 第 31 卷 第 2 期 农 业 工 程 学 报 Vol.31 No.2 72 2015 年 1 月 Transactions of the Chinese Society of Agricultural Engineering Jan. 2015 利用热脉冲技术测量土壤表层含水率 1 2 2 ※ 张 晓 ，王月月 ，任图生 （1. 中国林业科学院荒漠化研究所，北京 100091 ； 2. 中国农业大学土壤与水科学系，北京 100193 ） 摘 要：准确测定表层土壤水分对陆地-大气间水热交换研究具有重要意义。由于对土壤结构影响轻微，热脉冲技术在原 位监测含水率方面具有较大优越性，但目前田间应用集中在 5 cm 以下土层。该研究利用多针热脉冲传感器测定土壤容积 热容量，然后基于热脉冲含水率法和热脉冲含水率变化法分别得到了 3、9、21 和 39 mm 的土壤含水率。结果表明，与