The Spatio-temporal Change Characteristics of Flood Disaster in the Southern Xinjiang in Recent 60 Years
Received date: 2011-01-04
Request revised date: 2011-10-10
Online published: 2012-03-25
Copyright
The spatio-temporal change characteristics of flood disasters in the southern Xinjiang were analyzed using data of the break-down houses, the total area of disaster-suffered farmland, the economic loss and the total amount of death beast in 1949-2008. The situations of flood disaster in each places of the southern Xinjiang were evaluated using grey correlation disaster evaluating model. The results of the study showed that: 1) The frequency and accumulative durations of flood disaster in the southern Xinjiang were obviously increased. The frequency of flood disaster was low within the 1950s and the 1970s, but increased from 1980s. The flood disaster occurred mainly from March to September each year. The frequency of flood disaster in July was most, which was 7.8 times. The second main month for flood disaster was June, which happened 6 times in June. Flood disaster by snow melt happens in spring, while flood disaster by rain storm, snow melt and rainstorm happens in summer, and flood disaster by ice emphraxis happens in winter. 2) The frequency of flood disasters in Aksu and Kashgar were the most, and the duration of flood disaster by rainstorm was the longest. The speed of the increase of flood disaster by rainstorm was fastest. 3) The southern Xinjiang could be divided into strong flood disaster area, moderate flood disaster area and slight flood disaster area, thereinto, Aksu and Kashgar were strong flood disaster areas, Bayinholin was moderate flood disaster area and Kizilsu and Hotan were slight flood disaster areas. 4) The economic loss from flood disaster was gradually increased with the increase of the total value of industrial and agricultural production, and the speed of the increase of economic loss was faster than the economic increase. The paper suggested that the investment for disaster prevention should be increased, and the disaster relief systems should be established so that to strengthen the disaster prevention and control.
Key words: flood disaster; spatio-temporal change; division; Southern Xinjiang
MANSUR Sabit , WU Mei-hua . The Spatio-temporal Change Characteristics of Flood Disaster in the Southern Xinjiang in Recent 60 Years[J]. SCIENTIA GEOGRAPHICA SINICA, 2012 , 32(3) : 386 -392 . DOI: 10.13249/j.cnki.sgs.2012.03.386
Table 1 The correlation degree and flood area表1 关联度与洪灾分区对应一览表 |
灾害分区 | 严重洪灾区 | 重洪灾区 | 中洪灾区 | 轻洪灾区 | 微洪灾区 |
---|---|---|---|---|---|
关 联 度 | 1.0~0.8 | 0.8~0.6 | 0.6~0.4 | 0.4~0.2 | 0.2~0.0 |
Fig.1 The annual variation tendency of flood disaster in the southern Xinjiang in 1949-2008图1 1949~2008年间南疆洪灾年际变化趋势 |
Fig.2 The seasonal variation of flood disaster in the southern Xinjiang in 1949-2008图2 1949~2008年间南疆洪灾季节变化特征 |
Fig.3 The inter-annual variation tendency of flood disaster in each counties of the southern Xinjiang in 1949-2008图3 1949~2008年间南疆各地州洪灾年代际变化 |
Table 2 The results of grey correlation analysis of flood disaster in each counties of the southern Xinjiang表2 南疆各县市洪水灾害灰色关联度及关联序 |
编号 | 县市 | 关联度 | 关联序 | 编号 | 县市 | 关联度 | 关联序 | 编号 | 县市 | 关联度 | 关联序 |
---|---|---|---|---|---|---|---|---|---|---|---|
1 | 库尔勒市 | 0.484 | 29 | 15 | 沙雅县 | 0.603 | 9 | 29 | 叶城县 | 0.634 | 5 |
2 | 和静县 | 0.557 | 16 | 16 | 乌什县 | 0.667 | 1 | 30 | 塔什库尔干县 | 0.469 | 34 |
3 | 和硕县 | 0.545 | 19 | 17 | 阿瓦提县 | 0.624 | 8 | 31 | 阿图什县 | 0.627 | 6 |
4 | 博湖县 | 0.489 | 28 | 18 | 柯坪县 | 0.552 | 18 | 32 | 阿合奇县 | 0.601 | 11 |
5 | 轮台县 | 0.519 | 23 | 19 | 喀什市 | 0.451 | 37 | 33 | 乌恰县 | 0.532 | 21 |
6 | 尉犁县 | 0.505 | 25 | 20 | 疏附县 | 0.568 | 15 | 34 | 阿克陶县 | 0.626 | 7 |
7 | 若羌县 | 0.578 | 013 | 21 | 疏勒县 | 0.363 | 42 | 35 | 禾田市 | 0.369 | 41 |
8 | 且末县 | 0.514 | 24 | 22 | 巴楚县 | 0.459 | 36 | 36 | 禾田县 | 0.500 | 26 |
9 | 焉耆县 | 0.523 | 22 | 23 | 伽师县 | 0.471 | 32 | 37 | 皮山县 | 0.542 | 20 |
10 | 阿克苏市 | 0.656 | 3 | 24 | 岳普湖县 | 0.483 | 30 | 38 | 墨玉县 | 0.470 | 33 |
11 | 温宿县 | 0.554 | 17 | 25 | 英吉沙县 | 0.598 | 12 | 39 | 洛浦县 | 0.489 | 27 |
12 | 拜城县 | 0.652 | 4 | 26 | 麦盖提县 | 0.411 | 39 | 40 | 于田县 | 0.465 | 35 |
13 | 库车县 | 0.656 | 2 | 27 | 莎车县 | 0.602 | 10 | 41 | 民丰县 | 0.418 | 38 |
14 | 新和县 | 0.570 | 14 | 28 | 泽普县 | 0.471 | 31 | 42 | 策勒县 | 0.376 | 40 |
The authors have declared that no competing interests exist.
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