基于森林植被及土壤类型的垂直分布状况,根据海拔设置了18个标准样地,对广西猫儿山国家级自然保护区森林乔木冠层、林下灌草层、林地枯枝落叶层和林地土壤层的涵养水源能力进行了调查与估测,并对该保护区森林涵养水源的经济价值进行了估算。结果表明,该保护区森林乔木冠层平均截留雨量为3097.7×104t.a^-1,占总贮水量的27.8%。林下灌草层平均截留雨量为517.2×104t•a^-1,占总贮水量的4.6%。各森林类型中枯落物的累积干质量为3.00~15.56 t•hm^-2,最大吸水量和最大净吸水量分别为8.64~45.44和5.64~33.58 t•hm^-2,平均净吸水量为19.58 t•hm^-2;林地枯枝落叶层的平均吸持贮水量为2 664.2×104t•a^-1,占总贮水量的23.9%。不同林地100 cm土层的贮水量为355.2~1 940.0 t•hm^-2,林地土壤层平均贮水量为4 876.0×104t•a^-1,占总贮水量的43.7%。该保护区森林植被4个水文层次实际的总贮水量为11 155.1×104t•a^-1,折算成货币价值后,则该保护区森林涵养水源总效益应为人民币13 386.1×104元•a^-1。调查统计结果充分说明,广西猫儿山国家级自然保护区森林植被的涵养水源功能及其生态经济效益相当显著,对于维护和保障周边地区的生态安全、维持工农业生产的可持续发展具有非常重要的作用。

Based on vertical distribution of forest vegetation and soil types of Mao'er Mountain National Nature Reserve of Guangxi, eighteen standard plots were set according to altitude, and water conservation capacity of arbor canopy layer, shrub-grass layer under canopy, litter layer and soil layer in the forest were investigated and estimated, respectively, and the economic value of water conservation of forest in the nature reserve was also evaluated. The results show hal average interception in arbor canopy layer of the forest is 3 097. 7x104 t·a^{- 1}, accounting for 27.8% of total system storage. Average interception of shrub-grass layer under canopy is 517.2×104t·a^{- 1},  accounting for 4.6% of total system storage. Accumulation dry weight of forest litter in different forest types is 3.00-15. 56 t·hm ^-2 maximum holding water storage and maximum net holding water storage is 8.64-45.44  and 5.64-33.58 t·hm ^-2,respectively, and average net holding water storage is 19. 58 t·hm ^-2. And average holding water storage of the forest litter layer is 2 664. 2x104 t·a^{- 1}, accounting for 23.9%  of total system storage. The water storage in 100 cm soil depth of different forest types is 355. 2-1940.0  t·hm ^-2. Average water storage of the forest soil layer is  4 876.0 x 104  t·a^-1, accounting for accounting for 43.7% of totals ystem storage. The actual total water storage capacity of four hydrological levels of the forest vegetation is11 115, 1x104 t·a^{- 1} ,after converting to monetary value, the total benefit of water conservation of forest in the nature reserve is equivalent to RMB 13 386. 1× 10⁴ yuan·a^-1. Statistical survey fully demonstrates that water conservation function and ecological economic benefit of forest vegetation in Mao'er Mountain National Nature Reserve of Guangxi are quite significant, and it plays a very important role in preserving and protecting the ecological security of surrounding areas and sustaining the development of industrial and agricultural production.