摘要
为揭示武威市凉州区南部山区国储林不同林分土壤的抗蚀特性,以山杏、云杉、樟子松林土壤为研究对象,开展土壤抗蚀指标的测定。结果表明:(1)山杏、樟子松、云杉林地土壤容重随着土壤深度增加而降低。(2)山杏、樟子松和云杉林表层土壤有机质含量分别为0.91%、1.35%和0.68%,亚层土壤有机质含量分别为1.04%、1.11%和0.76%,第3层土壤有机质含量分别为1.11%、1.54%和0.94%,不同林分土壤有机质含量随着土壤深度增加而增加,樟子松林土壤有机质含量高于山杏林和云杉林。(3)在土壤0~30 cm深度>0.25 mm干筛团聚体平均含量依次为樟子松林地(91.59%)>云杉林地(88.75%)>山杏林地(84.07%),>0.25 mm水稳性团聚体平均含量分别为樟子松林地(21.27%)>云杉林地(9.01%)>山杏林地(2.73%)。(4)3种林分在土壤不同层次结构破坏率表现为山杏林地>云杉林地>樟子松林地,林地土壤抗蚀性表现为樟子松林>云杉林>山杏林。(5)通过相关分析,土壤结构破坏率和>0.25 mm水稳性团聚体含量可作为评价土壤抗蚀性能的较好指标。
In order to reveal the soil anti-erodibility characteristics of different stands of national reserve forest in the southern mountainous area of Liangzhou District of Wuwei City,the soils of Armeniaca sibirica,Picea asperata and Pinus sylvestris var.mongolica were taken as the research objects,and the soil anti-erodibility indexes were determined.The results showed as the following five aspects.(1)The soil bulk density of A.sibirica,P.sylvestris var.mongolica and P.asperata forest land decreased with the increase of soil depth.(2)The organic matter content of surface soil of A.sibirica,P.sylvestris var.mongolica and P.asperata forest were 0.91%,1.35%and 0.68%,respectively;organic matter content of the sub-layer soil were 1.04%,1.11%and 0.76%,respectively;and the organic matter content of the third layer soil were 1.11%,1.54%and 0.94%,respectively.The soil organic matter content of different stands increased with the increase of soil depth,and the soil organic matter content of P.sylvestris var.mongolica forest was higher than that of A.sibirica forest and P.asperata forest.(3)The average content of>0.25 mm dry sieve aggregates in 0-30 cm soil depth was P.sylvestris var.mongolica forest land(91.59%)>P.asperata forest land(88.75%)>A.sibirica forest land(84.07%),and the average content of>0.25 mm water-stable aggregates was P.sylvestris var.mongolica forest land(21.27%)>P.asperata forest land(9.01%)>A.sibirica forest land(2.73%).(4)The damage rate of the three stands in different soil hierarchical structures was A.sibirica>P.armeniaca forest land>P.sylvestris var.mongolica forest land,and the soil anti-erodibility of forest land was P.sylvestris var.mongolica forest>P.asperata forest>A.sibirica forest.(5)Through correlation analysis,the rate of soil structure damage and the content of>0.25 mm water-stable aggregates could be used as good indicators to evaluate soil anti-erodibility.
作者
张涛
高万林
牟德生
何彩
吴雪茹
刘伟
张军
晋敏
Zhang Tao;Gao Wanlin;Mu Desheng;He Cai;Wu Xueru;Liu Wei;Zhang Jun;Jin Min(Wuwei Academy of Forestry,Wuwei 733000,China;Gansu Minqin Liangucheng National Nature Reserve Management and Protection Center,Wuwei 733000,China;Gansu Endangered Animal Protection Center,National Forestry Administration,Wuwei 733000,China)
出处
《防护林科技》
2024年第5期14-18,共5页
Protection Forest Science and Technology
基金
武威市市级科技计划项目(WW23B02 NY103)。
关键词
凉州区南部山区
不同类型林分
土壤
抗蚀特性
southern mountainous area of Liangzhou District
different types of stands
soil
anti-erodibility characteristics
