Characteristics of air temperature and water-salt transfer during freezing and thawing period

Ruiping Li, Haibin Shi, Takeo Akae, Yiqiang Zhang

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Freezing and thawing action is a particular mechanism of soil salinization in the northwestern arid and cold area. Taking Inner Mongolia Hetao Irrigation District as an example, based on the observed field data, the variation laws of soil temperature, soil moisture and soil salt during freezing and thawing period were analyzed. Results show that the variation laws of soil temperature at the different soil layers are consistent. Variation of soil temperature lags to air temperature. With the soil depth increasing, lag interval increases also. Decrease of air temperature results in that of soil temperature, which leads to water and salt transfer. Temporal variability coefficient of salt(0.30~0.85) is larger than that of water(0.02~0.40). Salt transfer mechanism is more complex than water transfer mechanism. Research provides the foundation for the water-heat-salt coupling simulation on freezing-thawing soils and the establishment of autumn irrigation schedule in Hetao Irrigation District.

Original languageEnglish
Pages (from-to)70-74
Number of pages5
JournalNongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume23
Issue number4
Publication statusPublished - Apr 2007

Fingerprint

Thawing
Saline water
saline water
Freezing
thawing
soil temperature
air temperature
freezing
Soil
Salts
Air
salts
Soils
Temperature
Water
irrigation
water
Irrigation
soil salinization
soil salts

Keywords

  • Autumn irrigation
  • Coupling transfer
  • Freezing and thawing soils
  • Hetao Irrigation District
  • Water-salt

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)

Cite this

Characteristics of air temperature and water-salt transfer during freezing and thawing period. / Li, Ruiping; Shi, Haibin; Akae, Takeo; Zhang, Yiqiang.

In: Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering, Vol. 23, No. 4, 04.2007, p. 70-74.

Research output: Contribution to journalArticle

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