栗茶混交林地水分涵蓄潜力的研究  

Potential of water conservation in chestnut and tea mixed woodland

作　　者：王家明[1] 刘桂华[1] 周敏[1] 

机构地区：[1]安徽农业大学林学与园林学院,合肥230036

出　　处：《安徽农业大学学报》2009年第1期96-99,共4页Journal of Anhui Agricultural University

基　　金："十一五"国家林业科技支撑项目(2006BAD03A16)资助

摘　　要：对不同郁闭度的粟茶混交林地的水分涵蓄进行研究。结果表明，不同郁闭度林分枯落层最大持水量为298．58％～340．34％，其中B5（纯板栗林地）〉B4（板栗郁闭度为40％-50％的栗茶混交林地）〉B3（板栗郁闭度为30％～40％的栗茶混交林地）〉B2（板栗郁闭度为20％～30％的粟茶混交林地）〉B1（纯茶林地）：枯落层有效涵蓄量为9．14～18．85t·hm^-2，林地土壤最大蓄水量为2569．80～3465．60t·hm^-2，两者最大为B4，其次为B3，最小为B5；林地土壤涵养水源量为291．00～828．60t·hm^-2，其中B3最大，B4次之，B5最小；从林地总体涵蓄量看，枯落层所占比例较小，土壤层占绝大部分；从不同密度林分看，涵蓄潜力以B3为最大．B4次之。因此，在进行粟茶混交栽培时，应选择适当的栽植密度，以最大限度发挥其涵养水源的功能。We studied the effect of different canopy densities on the potential of water conseravation in chestnut and tea mixed woodland. The result indicated that the maximum water-holding capacity in layer of deadwood and defoliation in different canopy density woodlands is 298.58 -340. 34%, thereinto, B5 （pure chestnut woodland） 〉 17,4 （chestnut canopy density of 40% -50% in chestnut and tea mixed woodland） 〉 B3 （chestnut canopy density of 30% - 40% in chestnut and tea mixed woodland） 〉 B2 （chestnut canopy density of 20% - 30% in chestnut and tea mixed woodlands） 〉 B1 pure tea woodlands） ;Available water conservation capacity in layer of deadwood and defoliation is 9.14 - 18.85 t ·hm^-2, the maximum water storage capacity in forest soil is 2 569. 80 - 3 531.60 t·hm^-2,the maximum is B4, secondly is B3, the minimum is B5;Water conservation capacity in forest soil is 291.00-828.60 t·hm^-2 ,the maximum is B3 ,next is B4 and the minimum is B5. From all of the water conservation capacity, smaller proportion of potential is in layer of deadwood and defoliation, from different density forests, the vast majority is in soil layer, B3 have the maximum water conservation potential and next is B4.

关 键 词：栗茶混交林 涵养水源 郁闭度 潜力 

分 类 号：S718.5[农业科学—林学]