CHENG Dongya,LI Xudong.Research on Evaluation of Forestland and Grassland Protection in Southwest Mountainous Basin—A Case Study of the Chishui River Basin in Guizhou Province[J].Research of Soil and Water Conservation,2019,26(04):328-335.
西南山地流域林地和草地保护评价研究——以贵州赤水河流域为例
- Title:
- Research on Evaluation of Forestland and Grassland Protection in Southwest Mountainous Basin—A Case Study of the Chishui River Basin in Guizhou Province
- Keywords:
- forestland and grassland; Chishui River Basin in Guizhou Province; southwest mountain basin
- 分类号:
- X826;Q948
- 摘要:
- 根据贵州境内赤水河流域DEM数据、土壤数据、植被数据，分类提取坡度、坡向、植被覆盖度等评价因子，采用层次分析法对流域林地和草地保护区进行了综合评价。采用相等间隔分类后，将流域林地和草地保护区划分为Ⅰ类、Ⅱ类、Ⅲ类、Ⅳ类、Ⅴ类5个等级。研究得出以下结论：（1）贵州赤水河流域林地和草地保护区综合评价得分为1.20~4.69。（2）贵州赤水河流域中上段林地和草地Ⅴ类保护区面积相对较大，下段Ⅰ类保护区面积相对较大。（3）贵州赤水河流域Ⅰ类保护区标准差椭圆空间分布大致呈现南北方向，Ⅱ类保护区基本无空间方向，Ⅲ—Ⅴ类保护区基本呈现东北—西南方向。（4）相等间隔分类后，贵州赤水河流域林地和草地保护区Ⅰ类、Ⅱ类、Ⅲ类、Ⅳ类、Ⅴ类保护区占比分别为10.34%，31.83%，24.25%，27.02%，6.57%。（5）贵州赤水河流域七星关和仁怀林地和草地保护压力较大，赤水林地和草地保护压力相对较小。
- Abstract:
- According to the DEM data, soil data and vegetation data of the Chishui River Basin in Guizhou Province, the evaluation factors such as slope, aspect and vegetation coverage were extracted, and the analytic hierarchy process method was used to comprehensively evaluate the forestland and grassland protection areas. After use of the equal interval, forestland and grassland protection area of the basin was divided into five grades: Class Ⅰ, Class Ⅱ, Class Ⅲ, Class Ⅳ and Class Ⅴ. The conclusions are drawn as the follows. (1) The comprehensive evaluation scores of forestland and grassland protection areas of the Chishui River Basin in Guizhou Province are between 1.20 and 4.69. (2) The area of the Class V protected areas of forestland and grassland in the upper and middle section of the Chishui River Basin in Guizhou Province is relatively large, and the area of the Class Ⅰ protected areas in the lower section is relatively large. (3) The standard ellipse spatial distribution of the Class Ⅰ protected areas of the Chishui River Basin in Guizhou Province roughly present towards the north-south direction. The Class Ⅱ protected areas have no spatial direction, and the Class Ⅲ—Ⅴ protected areas are basically towards the northeast-southwest direction. (4) After the equal interval classification, the proportions of Class Ⅰ, Class Ⅱ, Class Ⅲ, Class Ⅳ and Class Ⅴ protected areas in the forestland and grassland protection areas of the Chishui River Basin in Guizhou Province are 10.34%, 31.83%, 24.25%, 27.02%, 6.57%, respectively. (5) The protection pressure of Qixingguan and Renhuai forestland and grassland in the Chishui River Basin in Guizhou Province is relatively high, and the protection pressure of forestland and grassland is relatively small.
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备注/Memo
收稿日期:2018-09-02;改回日期:2018-11-09。
基金项目:国家自然科学基金“西南山地流域城市化与生态环境的耦合关系研究——以贵州乌江流域为例”（41261039）
作者简介:程东亚(1994-),男,安徽亳州人,硕士研究生,研究方向为资源利用与低碳发展。E-mail:wwwcdongya@yeah.net
通讯作者:李旭东(1969-),男,湖南邵东人,教授,主要从事人口地理与区域发展、应对气候变化与低碳经济研究。E-mail:616507732@qq.com