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作 者 ：王克勤 王斌瑞

期 刊 ：林业科学 1998年 34卷 4期 页码：14-21

关键词：集水造林；植树带；根际区；深层土壤；土壤干化；

Keywords:Afforestation by waterharvesting, Planting strip, Roots range, Deep soil, Soil desiccaion,

摘 要 ：本文对采用集水造林措施的两种密度人工刺槐林的产流、土壤水分变化、水量平衡以及林木生长情况与常规造林进行了对比分析,结果表明集水造林能增加植树带径流收获量,提高土壤含水量,使更多的降水渗入到根际区以下的深层土壤,防止了土壤水分长时间持续严重亏缺———土壤干化的发生,以及所导致的林木生长不良等问题。其中,以密度较小的8m²拍光处理的效果最佳,生长季汇集径流量的20%以上将贮留于土壤中,有效地补充了深层土壤水分,促进了林木生长。

Abstract:This paper deals comparatively with the runoffproducing, soilwater content, water balance and trees growth of two spacing (9m×2m and 5m×2m) artificial Locust Forest between waterharvesting and conventional treatment. The results showed that afforestation by waterharvesting can increase runoff harvest in the planting strip, raise soil water content, permeate more rainwater into deep soil under the roots range and prevent critical deficit of soil water continuously for a long time——soil desiccation, which results in declination of trees growth. In these treatments, the lowest density (8m² tamped) is desirable for effect, it is that more than 35% annual runoff yield is stored in soil, deep soil water is replenished effectively and growth of forest tress is promoted.

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