不同森林类型土壤肥力状况及水源涵养功能的研究

Study on the Fertility of Soil and the Benefit of Soil-water Conservation for Different Forest Types

从不同森林类型土壤肥力状况及涵养水源的角度 ,对巢湖低丘 3种森林类型和 1个新造未成林地的土壤肥力和涵养水源功能进行了分析研究。结果表明 :阔叶林、毛竹林能增加土壤有机质含量 ,改善土壤养分状况 ;马尾松林能提高土壤有效 P含量 ;各森林类型林地枯落物贮水量大小依次是 :阔叶林 (1 6.91 t·hm- 2 ) >毛竹林 (7.65 3 t·hm- 2 ) >马尾松林 (2 .83 t·hm- 2 ) >新造未成林地 (2 .72 1 t·hm- 2 ) ;土壤持水量大小依次是 :毛竹林 >阔叶林 >马尾松林 >新造未成林地 ;阔叶林和毛竹林较马尾松针叶林有更好的涵养水源功能 。

With the concerns of soil fertility and water conservation ,the soil of three forest types and non restocking forest land in hill areas of Chaohu were selected to test their soil fertility and water holding capacity.The results indicated that fertility holding of broad leaved wood and bamboo forest were better than that of masson′s pine,and the masson′s pine could enhance valid P content of soil. The pecking order of water storage capacity was broad leaved wood(16 91 t·hm -2 )>bamboo forest(7 653 t·hm -2 )>masson′s pine(2 83 t·hm -2 )>non restocking forest land(2 721 t·hm -2 ),and that of all forest soil types was bamboo forest>broad leaved wood>masson′s pine plantation>non restocking forest land. Broad leaved wood and bamboo forest had a higher water conservation than masson′s pine plantation,suggesting that these forests were more suitable in changing farmland into forest.