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[1]LI Yang,LI Jiangang,LIU Yan,et al.Preliminarily Analysis on the Characteristics of Depth Variation of Snow Accumulation and Frozen Soil in Northern Xinjiang[J].Research of Soil and Water Conservation,2015,22(05):342-348.

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Preliminarily Analysis on the Characteristics of Depth Variation of Snow Accumulation and Frozen Soil in Northern Xinjiang

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 22 Number of periods: 2015 05 Page number: 342-348 Column: Public date: 2015-10-28

Title:: Preliminarily Analysis on the Characteristics of Depth Variation of Snow Accumulation and Frozen Soil in Northern Xinjiang

Author(s):: LI Yang¹, LI Jiangang², LIU Yan¹, ZHANG Pu³; 1. Institute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, China;
2. Xinjiang Meteorological Observatory, Urumqi 830002, China;
3. Urumqi Meteorological Satellite Ground Station, Urumqi 830011, China

Keywords:: northern Xinjiang; snow accumulation; frozen soil; Mann-Kendall test

CLC:: P468.0⁺25;P642.14

DOI:: -

Abstract:: The climatic distribution characteristics of snow accumulation and frozen soil depth in the area of northern Xinjiang was analyzed based on daily snow accumulation and frozen soil data obtained from six national basic meteorological observing stations during the period from 1960 to 2007, and the effect of snow accumulation depth on frozen soil variation was discussed by use of statistic method. The result showed that: (1) the maximum frozen soil depth (MFD) was greatly affected by the altitude, and was proportional to the altitude, the appearing age of MFD was lagged from plain to mountain area, MFD appeared the trend of decreasing since 1980’s and this phenomenon was obvious in plain compared with mountain area. The inter-annual variation of MFD and average frozen soil depth at three different frozen soil type regions in winter kept descending basically; (2) the maximum snow accumulation depth (MSD) at region Ⅰ was greater than region Ⅱ and region Ⅲ, the inter-annual variation of MSD and average snow accumulation depth appeared single-valley pattern; (3) the mapping between MSD and MFD was displayed by bimodal pattern at region Ⅰ, unimodal pattern at region Ⅱ, logarithmic pattern at region Ⅲ, the depth of frozen soil increased obviously when snow accumulation depth was shallow, however, frozen soil depth changed less with the increase of snow accumulation depth,and dropped after snow accumulation depth exceeded a certain threshold value;(4) MFD and MSD were tested by Mann-Kendall abrupt change detection method, and the result showed that varying trend of these two parameters was opposite, and they basically had the negative correlation.

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