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### 岷江上游山区聚落生态位空间分布特征研究

1. 西南科技大学环境与资源学院,四川 绵阳 621010
• 收稿日期:2016-03-17 修回日期:2016-05-05 出版日期:2017-03-20 发布日期:2017-03-20
• 作者简介:

作者简介：樊敏（1984-）,女, 重庆开县人,博士,讲师,主要从事山区生态服务与规划研究。E-mail:firstfanmin@hotmail.com

• 基金资助:
国家自然科学基金项目(41601088)、国家科技支撑计划课题 项目(2015BAC05B04)、 四川省科技支撑计划项目（2014SZ0058）资助

### Spatial Distribution Characteristics of Mountainous Settlement Ecological Niche in the Upper Reaches of the Minjiang River

Min Fan(), Yalin Guo, Fucheng Li, Qing Wang()

1. School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
• Received:2016-03-17 Revised:2016-05-05 Online:2017-03-20 Published:2017-03-20
• Supported by:
National Natural Science Foundation of China (41601088), China National Science and Technology Support Program (2015BAC05B04), Sichuan Province Science and Technology Support Program (2014SZ0058)

Abstract:

The settlement ecological niche is the basic element for studying human-land relationship in the mountainous area, which could reflect located spatial position of the settlement vertically along the mountain and resources space available to the settlement for sustenance. It is an effective approach of studying mountainous environmental change and how the human adapted to its change by revealing inner mechanisms about spatial structure of settlement ecological niche and vegetation habitat suitability. Based on the spatial distributions of mountainous settlement ecological niche of individual nationality categories and vegetation habitat suitability in the Upper Reaches of the Minjiang River, this study quantified the affect of nationality category on spatial distributed characteristics of mountainous settlement ecological niche by use of Fractal and Bayesian Models. The detailed results are as following: 1) The values of lacunarity dimensions of Tibetan, Qiang, Hui, and Han nationalities settlement ecological niches were 0.949, 0.942, 0.889, and 0.960, respectively. The maximum value of lacunarity dimension appeared in the Han nationality settlement ecological niche, and indicated that its spatial cluster was lowest and spatial differentiation was highest. The minimum value of lacunarity dimension occurred in the Hui nationality settlement ecological niche, and indicated that its spatial structure was highest and spatial differentiation was lowest. It also suggested that spatial distribution of Hui nationality settlement ecological niche possessed closeness characteristic. Meanwhile, the lacunarity dimension of all 1 667 settlement ecological niches in the studied watershed was 0.946, which approximated to the lacunarity dimension of Tibetan nationality settlement ecological niche (0.949). It indicated that the spatial heterogeneity of Tibetan nationality settlement niche played an important role in the spatial differentiation of all mountainous settlement ecological niches. 2) The average values of vegetation habitat suitability index of Tibetan, Qiang, Han, and Hui nationality settlement ecological niches were 2.816, 2.622, 2.529, and 2.644, respectively, which revealed that the harmony between spatial distribution of mountainous settlement ecological niche and vegetation habitat suitability was high. The sensitivity of all 1 667 settlement ecological niches in the studied watershed to vegetation habitat suitability (0.601) was close to that Qiang nationality settlement ecological niche (0.610), which indicated that Qiang nationality settlement ecological niche can reflect the whole geometrical characteristics of all settlement ecological niches in the studied site. 3) Nationality type significantly impacted on the spatial location, scale, and pattern of mountainous settlement ecological niche, which led to stronger spatial differentiation, and clearer geographical boundaries of Tibetan, Qiang, Hui, and Han different nationality settlement ecological niches. In summary, the study on quantifying of mountainous settlement ecological niche in the upper reaches of the Minjiang River could provide the data support for spatial reconstruction and ecological construction of mountainous settlement. The proposed research framework in this study could be extended to other coexistent area of multiple nationality categories to identify spatial distributed characteristics of settlements.

• K901.8