| 蒲思颖，代群威，董发勤，李琼芳，崔 杰，宋 韬.基于小流域单元提取的雪宝顶流域范围界定及其生态、社会经济属性空间分布特征[J].广东农业科学,2020,47(10):93-102 |
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基于小流域单元提取的雪宝顶流域范围界定及其生态、社会经济属性空间分布特征 |
| Definition of Xuebaoding Basin Scope and Spatial Distribution Characteristics of Its Ecological, Socio-economic Attributes Based on Small Watershed Extraction Units |
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| DOI：10.16768/j.issn.1004-874X.2020.10.012 |
| 中文关键词: 雪宝顶 西南山区 小流域 断裂 地理分界 钙华 空间分布 |
| 英文关键词: Xuebaoding mountainous areas of Southwest China small watershed fracture geographic boundary travertine spatial distribution |
| 基金项目:国家自然科学基金面上项目（41877288，41973053） |
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| 中文摘要: |
| 【目的】明确岷山主峰雪宝顶（海拔 5 588 m）及其周边地区自然地域范围。雪宝顶及其周边地区是叠加了山地生态系统和岩溶生态系统双重脆弱性的西南山区典型代表区域，但该区域在前人研究中无统一确定范围。【方法】运用 ArcGIS 软件水文分析模块提取雪宝顶小流域单元，将其和该区域地质构造、钙华资源、地形地貌和植被区划进行空间叠加分析得到雪宝顶流域边界，并以小流域为研究单元对研究区生态、社会经济因子空间分布特征进行初步分析。【结果】雪宝顶流域地理位置为103°25'59"~104°17'12"E，32°26'11"~33°28'51"N，总面积约 6 988.97 km2，共计覆盖 3 个县 29 个乡镇。【结论】研究区小流域面积为10~30 km2 的个数最多，3~10 km2 的次之，类型以坡面型为主；研究区受自然因素影响较强，受人类活动影响则相对较不明显，其北部白河河谷周边地区和东南部涪江河谷周边地区均具有坡度大、降水强和人类活动强度高的特征，需注意涵养水源、预防地质灾害。 |
| 英文摘要: |
| 【Objective】The study was conducted to clarify the natural area range of Xuebaoding（5 588 m）, the main peak of Minshan Mountain, and its surrounding areas. Xuebaoding and its surrounding areas are representative regions of the southwest mountainous area where the dual vulnerability of mountain ecosystems and karst ecosystems are superimposed, however, this area has not been uniformly determined in previous studies. 【Method】The hydrological analysis module of ArcGIS was used to extract small watershed units, and spatial superimposing analysis with the natural characteristic factors of the region（geologic structure, travertine resource, topography and vegetation division）to obtain the boundary of Xuebaoding basin. With the small watersheds as research units, a preliminary analysis on the spatial distribution characteristics of ecological and socio-economic factors in the research area was conducted.【Result】The natural geographic range of Xuebaoding basin is 103 °25'59"-104 °17'12" E, 32 °26'11"-33 °28'51" N, and the total area is about 6 988.97 km2, covering a total of 29 towns in 3 counties.【Conclusion】The study area has the largest number of small watersheds with an area of 10-30 km2, followed by 3-10 km2 and the main type is slope. Xuebaoding basin is strongly influenced by natural factors, but less affected by human activities. The areas surrounding the Baihe River Valley in the north and the Fujiang River Valley in the southeast are characterized by large slope, strong rainfall and high intensity of human
activities. Attention should be paid to water conservation and geological disaster prevention. |
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