ZHANG Ming, ZHANG Li, SHI Xiao-ni, et al. Characteristics of Soil Salinity and Ion Composition in Habitat Soil of Halogeton Glomeratus in Minqin Oasis[J]. Bulletin of Soiland Water Conservation, 2014, 33(6): 231-235.
DOI:
ZHANG Ming, ZHANG Li, SHI Xiao-ni, et al. Characteristics of Soil Salinity and Ion Composition in Habitat Soil of Halogeton Glomeratus in Minqin Oasis[J]. Bulletin of Soiland Water Conservation, 2014, 33(6): 231-235. DOI: 10.13961/j.cnki.stbctb.2014.06.048.
Characteristics of Soil Salinity and Ion Composition in Habitat Soil of Halogeton Glomeratus in Minqin Oasis
salt ions composition and correlations of different salt ions in habitat of Halogeton glomeratus in Minqin Oasis were studied. Results showed that H. glomeratus can accumulate salts and formed a certain salt island around its habitat. In the horizontal direction 0-60 cm away from H. glomeratus
the soil salinization degree aggravated with soil depth increases in 0-60 cm on the soil profile
among which anions were mainly Cl-
and SO42- and cations were Na+ and Ca2+. The main soil salinity were sodium chloride
calcium chloride
sodium sulfate and calcium sulfate
followed by magnesium chloride and magnesium sulfate. In 0-40 cm distance away from plant
the total salinity contents of the 0-20 cm soil layer on the soil profile were 0.98~1.52 g/kg and belonged to non-salinization soil
while that of the 20-40 cm and 40-60 cm soil layers were 2.25~2.30 g/kg and 3.10~3.16 g/kg
which belonged to light salinization soil and medium salinization soil
respectively. Furthermore
in the horizontal direction 60 cm distance away from the H. glomeratus
the total salinity content of 0-40 cm and 40-60 cm soil layers on the soil profile were 0.83~1.86 g/kg and 2.43 g/kg
which belonged to non-salinization and light salinization. There were extremely significantly positive correlations between soil salt content and ions contents except the content of HCO3-.
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