【摘要】 为定量评价碧罗雪山西坡生态系统服务功能，研究其垂直分布格局，根据全国生态系统分类体系对碧罗雪山西坡进行生态系统分类，依据《森林生态系统服务功能评估规范》,选取涵养水源、保育土壤、固碳释氧、积累营养物质、净化大气等指标，通过文献资料和公共数据完善了评估指标体系，以此为基础对碧罗雪山西坡森林生态系统进行生态系统服务功能评估并分析其垂直梯度分布格局。该区域森林生态系统总面积247 907.86 hm~2,森林生态服务年总价值为206.19亿元。其中，森林保育土壤价值和涵养水源价值合占总价值的77.90%,体现了该区域森林在水源涵养和保育土壤等方面的重大价值；单位面积价值整体呈现出中北部高，南部低的特征，其中单位面积最高的13.51～18.34万元/hm~2等级主要分布于碧罗雪山北部、中部地区，面积为5 927.12 hm~2,占评估总面积的2.38%。区域内生态系统服务功能价值垂直分布明显，单位面积生态系统服务功能价值随着海拔升高而增加，在海拔2 500～3 100 m出现下降后反弹，最高值出现在海拔3 100 m以上及1 500～2 500 m。更多还原

【Abstract】 To quantitatively evaluate the ecosystem service functions and study their vertical distribution pattern on the western slope of Biluo Snow Mountain, the ecosystem was classified according to the national ecosystem classification system. Based on the Specifications for Assessment of Forest Ecosystem Services in China, indicators including water conservation, soil conservation, carbon sequestration and oxygen release, nutrient accumulation, and atmospheric purification were selected. The assessment indicator system was refined using literature and public data. On this basis, the forest ecosystem services on the western slope were evaluated, and their vertical gradient distribution pattern was analyzed. The total area of the forest ecosystem in this region was 247 907.86 hm~2, with an annual total ecosystem service value of 20.619 billion yuan. Among these, the value of soil conservation and water conservation together accounted for 77.90% of the total value, highlighting the significant role of the forest in water source conservation and soil preservation in this region. The value per unit area was generally higher in the central-northern parts and lower in the southern part. Among them, the grade with the highest unit area value of 135 100-183 400 yuan/hm~2 was mainly distributed in the northern and central parts of Biluo Snow Mountain, covering an area of 5 927.12 hm~2, accounting for 2.38% of the total assessed area. The vertical distribution of ecosystem service value within the region was distinct. The ecosystem service value per unit area increased with elevation, showed a decline and then a rebound between 2 500 and 3 100 m, and reached its highest values above 3 100 m and between 1 500 and 2 500 m.更多还原