论文部分内容阅读
本文于1981～1984年植物生长季节对四川卧龙自然保护区森林土壤水分状况,进行了定位研究。试验林地设置在1200～4300m海拔高度的不同生物气候带的森林类型下。 选择的五处试验林地是:①常绿阔叶林下的山地黄壤;②次生落叶阔叶林下的山地棕壤;③针阔混交林下的山地暗棕壤;④暗针叶林下的山地棕色暗针叶林土;⑤高山草甸植被下的高山草甸土。试验结果阐明了试验林地土壤的蓄水性能,枯枝落叶层最大蓄水能力36～313t/ha,森林土壤的渗透系数在1.54～5.33mm/min,试验林地生长季节森林土壤水分贮量,都在最佳含水量下限以上,试验林地森林土壤水分供给(生态湿度)顺序为:山地棕色暗针叶林土(重温)>高山草甸土(重湿)>山地棕壤(湿)>山地黄壤(较湿)>山地暗棕壤(较湿—潮)。
In this paper, from 1981 to 1984, the plant growth season of Wolong Nature Reserve in Sichuan forest soil moisture status were carried out positioning studies. The experimental forestland was set up under the forest types of different bioclimatic zones at 1200 ~ 4300m above sea level. The five selected experimental plots were: ① mountainous yellow soil under evergreen broad-leaved forest; ② mountain brown soil under secondary deciduous broad-leaved forest; ③ dark brown soil in the mountain under coniferous and broad-leaved mixed forest; Dark brown coniferous forest soil; ⑤ alpine meadow under the alpine meadow soil. The results showed that the maximum storage capacity of the litter layer was 36 ~ 313t / ha, the permeability coefficient of forest soil was 1.54 ~ 5.33mm / min, the forest soil water storage in experimental forest land was Above the lower limit of the optimum water content, the order of soil moisture supply (ecologic humidity) of forest land was as follows: dark brown coniferous forest soil (revisit)> alpine meadow soil (heavy wet)> mountain brown soil (wet)> mountain Yellow soil (wet)> dark brown soil (wet-tide).