西北林学院学报2012，Vol.27Issue(6)：48-51,4.DOI:10.3969/j.issn.1001-7461.2012.06.10
小陇山林区主要林分凋落物水文效应
Hydrological Effect of Litter Layers of the Main Forest Types in Xiaolongshan Forest Region
摘要
Abstract
Attributes of litter layers of six types of forest stands (Quercu saliena var. acuteserrata, Pinus tabuli jormis , Larix kaempferi , Carya cathayensis , Pinus armandii , and broad leaved mixed stand) occurring in Xiaolongshan Mountain were investigated, such as standing crop, water holding capacity, maximal water holding rate, and decomposition rate. The results showed that differences in standing crop in different litter layers were significant, and with an order of P. armandii (48. 16 t · hm-2)＞P. tabuli for-mis(35. 72 t · hm-2)＞L. kaempferi(25. 58 t · hrrT2)＞C. cathayensis (13. 20 t · hm-2)＞Q. alienavar var. acuteserrata(&. 52 t · hm~2 ) ＞ broad leaf mixed stand (6. 16 t · hm 2). The decomposition rate of P. armandii was 11. 2%, only one third of Q. aliena var. acuteserrata. The water holding capacity of L. kaempjeri, P. armandii , P. tabuliformis, Q. aliena var. acuteserrata, C. cathayensis and broad leaved mixed stand were 21. 55, 19. 64, 18. 23, 14. 84, 9. 88 t · hm-2 and 8. 07 t · hm-2 , respectively. The water holding capacity and water conservation function increased with the increase of standing crop. The maximal water holding rate of six litter layers were in the order of Q. aliena var. acuteserrata ＞ broad leaved mixed stand＞C. cathayensis＞L. kaempferi＞P'. tabuliformis＞P. armandii. The maximal water holding rates were different among different stands. The water conservation function of Q. Aliena var.acuteserrata was the strongest, and P. armandii was the weakest.关键词
林分凋落物/现存量/持水量/最大持水率/分解速率Key words
Jitter layers/ standing crop/ water holding capacity/ maximal water holding rates/ decomposition rate分类
农业科技引用本文复制引用
孟玉珂,刘小林,袁一超,高兴红,郑子龙,李惠萍,杨永芳..小陇山林区主要林分凋落物水文效应[J].西北林学院学报,2012,27(6):48-51,4.基金项目
天水市科技支撑项目(2011-02). （2011-02）
