Academic Journal
川西高山峡谷区乡村聚落空间格局及其梯度效应 以茂县为例.
| Τίτλος: | 川西高山峡谷区乡村聚落空间格局及其梯度效应 以茂县为例. |
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| Alternate Title: | Spatial distribution patterns and gradient effects of rural settlements in the western Sichuan alpine gorge region. |
| Συγγραφείς: | 石晓娜1, 王铁霖2, 席昕1, 卿文华3 |
| Πηγή: | Resources Development & Market. 2026, Vol. 42 Issue 6, p862-870. 9p. |
| Θεματικοί όροι: | Human settlements, Land settlement patterns, Spatial arrangement, Probability density function, Subalpine zone, Hazards, Spatial variation |
| Γεωγραφικοί όροι: | Sichuan Sheng (China) |
| Abstract (English): | The high mountain gorge region of western Sichuan, on the eastern side of the Qinghai Xizang Plateau, is one of the world's most prominent topographic gradient zones, with the most ecologically sensitive ecosystems. The systematic quantification and gradient response mechanism of county level settlement spaces in the high mountain gorage region of western Sichuan still need to be further explored. This paper used kernel density estimation, average nearest neighbor index (ANN), and spatial autocorrelation analysis to uncover the gradient response mechanisms of rural settlement spatial distribution patterns in Mao County, which served as a representative case study region. The results showed that: ① Rural settlements in Mao County had "strong overall clustering, stark density gradients, and clustered differentiation," with a county-level ANN index of 0. 235 and settlements density variations exceeding sevenfold at the township scale. 2 Natural vertical gradients strongly influenced settlement distribution; 61.49% of settlements were situated in low elevation zones (896~2068 m), with 77.46% concentrated on gentle slopes (<25°). South slopes had much more settlements than north slopes, with 61.30% located at mid-slope altitudes to balance catastrophe avoidance and resource availability. ③ Cultural horizontal gradients altered settlement clustering patterns; 88.96% of settlements were within 387 m of roadways, whereas 84% were close to agriculture (within 446 m). Village level administrative centers had a gravitational radius of 1 993 m, within which 83.85% of all settlements lied. 4 Disaster hazards intensified human land conflicts, with 61.74% of settlements located in medium to high geological danger zones (within 840 m of hazard spots). Based on these findings, this paper proposed settlement optimization strategies centered on "strictly upholding bottom lines, reconstructing systems, enhancing resilience, and stimulating vitality," which provides a scientific basis for improving settlement resilience and advancing rural revitalization in high mountain gorge regions. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): | 青藏高原东缘的川西高山峡谷区是全球地形梯度最显著、生态最脆弱的区域之一, 针对川西高山峡谷及县域尺度聚落空间的系统性量化与梯度响应机制仍待深入。以茂县为典型研究区, 集成核密度估计、平均最近邻指数 (ANN) 与空间自相关分析等方法, 揭示该区域乡村聚落空间分布格局的梯度响应机制。研究发现: ①茂县乡村聚落呈现"全域强集聚、密度梯度悬殊、簇群化分异"特征, 县域 ANN 指数为 0.235, 乡镇尺度的聚落密度差异达 7 倍; ②自然垂直梯度对聚落分布具有刚性控制作用, 61.49% 聚落分布于低海拔带 (896-2068m), 77.46% 集中于坡度<25°的缓坡区, 南坡分布显著高于北坡, 61. 30% 聚落选址于中坡位以平衡避灾与资源获取; ③人文横向梯度重塑聚落集聚格局, 88.96% 聚落与道路距离<387m, 84% 聚落邻接耕地 (距离<446m), 村级行政中心形成 1993m 引力半径, 覆盖 83.85% 聚落; ④灾害胁迫凸显人地矛盾, 61.74% 聚落位于地质灾害中高风险区 (距灾害点<840m)。基于此, 提出"严守底线、重构体系、提升韧性、激活动力"的聚落优化对策, 为高山峡谷区聚落韧性提升与乡村振兴提供科学依据。 [ABSTRACT FROM AUTHOR] |
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