CAJ | 학술논문

运用Hood IL-2700.自动采集土壤入渗仪测定了四川盆地丘陵区农林复合系统3种林地(柏木Cupressus funebris纯林、麻栎Quercus acutissima-柏木混交林和桤木Alnus cremastogyne-柏木混交林)土壤的稳渗速率.结果表明:同一林地的土壤稳渗速率随土层加深而下降;不同林地的各层土壤中,混交林土壤稳渗速率显著高于纯林(P<0.05),混交林之间差异不显著(P>0.05).0～10cm土层稳渗速率的大小为:栎柏混交林(13.269mm·min~(-1))>桤柏混交林(10.438mm·min~(-1))>柏木纯林(4.513mm·min~(-1));10～20cm土层稳渗速率的大小为:栎柏混交林(4.338mm·min~(-1))>桤柏混交林(3.791mm·min~(-1))>柏木纯林(1.329mm·min~(-1));20～30cm土层稳渗速率的大小为:桤柏混交林(3.095mm·min~(-1))>栎柏混交林(2.653mm·min~(-1))>柏木纯林(1.965mm·min~(-1)).土壤物理性状、林分结构和林地凋落物与土壤稳渗速率存在密切关系.建议在四川盆地丘陵区农林复系统景观格局配置中,应积极营建混交林林带,以提高森林的水土保持功能.
운용Hood IL-2700.자동채집토양입삼의측정료사천분지구릉구농림복합계통3충임지(백목Cupressus funebris순림、마력Quercus acutissima-백목혼교림화기목Alnus cremastogyne-백목혼교림)토양적은삼속솔.결과표명:동일임지적토양은삼속솔수토층가심이하강;불동임지적각층토양중,혼교림토양은삼속솔현저고우순림(P<0.05),혼교림지간차이불현저(P>0.05).0～10cm토층은삼속솔적대소위:력백혼교림(13.269mm·min~(-1))>기백혼교림(10.438mm·min~(-1))>백목순림(4.513mm·min~(-1));10～20cm토층은삼속솔적대소위:력백혼교림(4.338mm·min~(-1))>기백혼교림(3.791mm·min~(-1))>백목순림(1.329mm·min~(-1));20～30cm토층은삼속솔적대소위:기백혼교림(3.095mm·min~(-1))>력백혼교림(2.653mm·min~(-1))>백목순림(1.965mm·min~(-1)).토양물이성상、림분결구화임지조락물여토양은삼속솔존재밀절관계.건의재사천분지구릉구농림복계통경관격국배치중,응적겁영건혼교림림대,이제고삼림적수토보지공능.
Using a Hood infiltrometer IL-2700(Germany,2006),the steady infiltration rate in three soil layers(0-10,10-20,and 20-30cm)of three forest types(a Cupressus funebris plantation,a mixed Quercus acutissima-C.funebris forest,and a mixed Alnus cremastogyne-C.funebris forest)from an agroforestry system in the hilly region of the Sichuan Basin was measured.The relationship between soil features,forest structure,and steady soil infiltration rate was also discussed.Results showed that for a given forest type the steady infiltration rate of the soil decreased with soil layer depth.For different soil layers,the steady infihration rates of the two mixed forests were significantly greater(P<0.05)than the C.funebris plantation.The order of steady infiltration rates by soil depth was as follows:1)for the 0-10 cm depth,mixed Q.acutissima-C.funebris forest(13.269mm·min~(-1))>mixed A.cremastogyne-C.funebris forest(10.438mm·min~(-1))>C.funebris plantation(4.513mm·min~(-1));2)for 10-20cm,mixed Q.acutissima-C.funebris forest(4.338mm·min~(-1))>mixed A.cremastogyne-C.funebris forest(3.791mm·min~(-1))>C.funebris plantation(1.329mm·min~(-1));and 3)for 20-30cm,mixed A.cremastogyne-C.funebris forest (3.095mm·min~(-1))>mixed Q.acutissima-C.funebris forest(2.653mm·min~(-1))>C.funebris plantation(1.965mm·min~(-1)).Thus,to enhance the water and soil conservation capacity of forested land in agroforestry systems of the hilly regions of Sichuan Basin,a mixed forest should be planted.