Soil Enzyme Activity of Haloxylon Ammondendron and Tamarix Chinensis Forest Land in Ebinur Lake Region during Snow Melting Period

doi:10.11924/j.issn.1000-6850.casb15120157

Abstract

Abstract: As a specific period with soil freeze-thaw action, the snow melting period brings important influences to soil enzyme activity. In order to deeply learn about soil ecological processes of major dominant species in dry desert areas during the snow melting period, outdoor field observation, sampling and indoor analysis were carried out to 2 typical desert forest lands in Ebinur Lake Region in March, 2013. Research results show that ① as for soil physical and chemical characteristics in Haloxylon ammondendron forest lands and Tamarix chinensis forest lands, the total salt content continuously decreased along with the increase of soil layer depth, while all the other physical and chemical factors gathered in a small scope and then decreased obviously in shallow layers (5-20 cm); ② with regard to changes of soil enzyme activity, the activity of catalase and protease varied regularly with increase of soil layer depth, wherein the urease activity in surface layer (0-5 cm) and relatively deep layer (20-40 cm) of Tamarix chinensis forest lands exceeded that of Haloxylon ammondendron forest lands, the activity of sucrose in surface layer (0-5 cm) of Tamarix chinensis forest lands exceeded that of Haloxylon ammondendron forest lands, and the soil enzyme activity in shallow layer (5-20 cm) and relatively deep layer (20-40 cm) of Haloxylon ammondendron forest lands exceeded that of Tamarix chinensis forest lands; ③ the quantity sequence of 3 major microorganisms in 2 types of desert forest lands is bacteria＞fungus＞actinomycetes, wherein bacteria and actinomycetes played a dominant role, which indicates that bacteria still have strong activity in March with a low temperature and are still the major microorganism type in soil.

CLC Number:

S154.2

楚新正 and . Soil Enzyme Activity of Haloxylon Ammondendron and Tamarix Chinensis Forest Land in Ebinur Lake Region during Snow Melting Period[J]. Chinese Agricultural Science Bulletin, 2016, 32(14): 138-145.

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