沐川县国有林场天然林与人工林保水功能比较

Compare Water Conserving Function Natural Forest with Plantation in State Owned Forest Farm in Muchuan County

摘要:

摘要：针对四川省沐川县天然林和人工林开展了枯落物蓄积量调查分析和持水特性的研究。结果表明：枯落物蓄积量为天然林＞人工林为25.7t·hm-2＞18.1 t·hm-2，最大持水量为天然林＞人工林为75.0 t·hm-2＞47.0 t·hm-2，最大持水率为天然林＞人工林，各时段吸水量、吸水速率表现为天然林＞人工林，有效拦蓄量表现为天然林＞人工林为28.6 t·hm-2＞17.0 t·hm-2。初步研究结果表明：天然林落物层保水功能相对要比人工林好。

Abstract:

Abstracts:Based on the natural forest and plantation in Muchuan County in Sichuan Province, we studied the investigation and analysis of the litter volume and water holding characteristics. The result showed the litter volume of natural forest was 25.7 t·hm-2, and plantation was 18.1 t·hm-2; the maximum moisture capacity of natural forest was 75.0 t·hm-2,and plantation was 47.0 t·hm-2; the maximum moisture rate of natural forest was more than plantation; the water absorption and water absorption speed in various periods of natural forest was more than plantation; the effective retaining content of natural forest 28.6 t·hm-2was more than plantation17.0 t·hm-2,In general, water conserving function of natural forest was better than plantation.