MI Lindi,ZHOU Ying,WANG Qing.Suitability Evaluation of Rural Residence in Baoxing River Basin After Ya’an 4·20 Earthquake[J].Research of Soil and Water Conservation,2016,23(03):199-203.
雅安4·20震后宝兴河流域农村居住区适宜性评价
- Title:
- Suitability Evaluation of Rural Residence in Baoxing River Basin After Ya’an 4·20 Earthquake
- 关键词:
- 雅安4 · 20地震; 农村居住地; GIS; 适宜性评价
- Keywords:
- Ya’an 4 · 20 earthquake; rural residence; GIS; suitability evaluation
- 分类号:
- F301;X826
- 摘要:
- 在汶川—芦山两次强震作用下，先天脆弱与高风险并存的武都—泸定一线山区成为受灾最为严重的地理单元。灾区生境重建是4·20灾后重建的重点、难点，也是维护灾区社会稳定的关键之一。以宝兴河流域农村居住地为研究对象，选取了地形、气象、植被、地质灾害、大熊猫栖息地世界遗产等影响适宜性的关键因子，开展农村居住地环境适宜性评价。结果表明：（1）山区农村居住地适宜性分布呈现出明显的海拔、坡度、坡向指向，且集中分布在世界遗产保护区及其外围。海拔2 900 m以下、坡度小于30°且阳坡、半阳坡地带是适宜性及次适宜性的主要分布区，具有沿河流及两侧集聚分布的特征，说明地形条件是影响适宜性分布的主要因子；（2）海拔2 900 m以上、坡度大于30°且半阴坡、阴坡地带是较不适宜及不适宜的分布区域，这与山高坡陡、热量不足等局地植被生境限制条件有关；（3）农村居住地适宜性由东南部向西北部逐渐降低，适宜区占总面积的16.79%，次适宜区占26.93%，较不适宜区占32.47%，不适宜区占23.81%。研究结果可为地震灾区安全选址与生境修复提供科技支撑。
- Abstract:
- The mountainous area of Wudu-Luding line with fragile environment has become the most serious geographical unit after strong earthquake of Wenchuan and Lushan. It is intractable to reconstruct the damaged habitat after earthquake and inevitable to maintain the social stability of disaster areas. In order to evaluate residence environmental suitability, we selected topography, weather, vegetation, geological disaster, and world natural heritage of giant panda habitat as key factors in the rural residence of Baoxing River Basin. The results are as follows. (1) The distribution of rural residence suitability is characterized by altitude, slope, and aspect, and especially concentrated in the world heritage area and its periphery. This distribution characterization indicates that the terrain is the main influence factor of habitat suitability. The suitability and sub-suitability habitats mainly distribute in the sunny slope and half sunny slope positions where the altitudes are less than 2 900 m and slope gradients are less than 30°; (2) The half shady slope and shady slope places with altitude of greater than 2 900 m and slope greater than 30° are the main distribution areas of sub-unsuitability and unsuitable habitat. This distribution characterization is related to limited factors of vegetation growth, such as high altitude, steep slope and shortage of heat; (3) The suitability of rural residence reduced gradually from the southeast to the northwest. The suitable region accounts for 16.79% of the study area, and sub-suitable region, sub-unsuitable region and unsuitable region account for 26.93%, 32.47% and 23.81%, respectively. According to the above main evaluation results of residence environmental suitability, this research could provide scientific support for the selection of safe site and habitat restoration of earthquake areas.
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备注/Memo
收稿日期:2015-05-02;改回日期:2015-06-01。
基金项目:科技部“十二五”国家科技支撑计划（2015BAC05B04-01）；四川省科技厅项目（2014SZ0063，2013SZ0101，2013SZ0159）
作者简介:米琳迪(1989-),女,河北邢台人,硕士研究生,研究方向为环境规划与管理。E-mail:milindi1223@163.com
通讯作者:王青(1967-),男,山西阳高人,博士,教授,主要从事环境规划与管理研究。E-mail:qingw@imde.ac.cn