黄土丘陵区刺槐生长及林地土壤水分动态规律研究  

Artificial Robinia peseudoacacia Growth and Soil Moisture Variation in Loessial Hilly-Gully Region

作　　者：吴照柏[1] 杨新民[1] 

机构地区：[1]中国科学院水利部水土保持研究所,陕西杨陵712100

出　　处：《水土保持研究》2004年第4期117-120,共4页Research of Soil and Water Conservation

基　　金：中国科学院知识创新工程"黄土高原水土保持和生态环境建设试验示范研究";编号为"KZCX1-06-01-02"资助

摘　　要：通过分析长历时黄土丘陵区人工刺槐林的单木生长和土壤水分动态变化,研究了黄土丘陵区刺槐生长和林地土壤水分动态规律。结果表明:在黄土丘陵区人工刺槐总体上可分为三个阶段,其生长量具有慢—快—慢的生长节律,而在其生长的第三阶段又有生长量的小幅波动回升。而随着刺槐生长状况的变化,刺槐林深层(5～8m)土壤水分含量也出现相应的上下波动,表明刺槐生长状况由刺槐林下的土壤水分状况所决定。此外还探讨了黄土丘陵区人工林土壤水分低湿层恢复的可能性。According to the long-term observation data of artificial Robinia peseudoacacia growth and soil moisture in hilly-gully region of the Loess Plateau, the variation processes of artificial Robinia peseudoacacia growth and soil moisture were studied.The results showed that growth process of Robinia peseudoacacia was divided into three stages,the growth rate of artificial Robinia peseudoacacia had the characteristic of'slow-fast-slow'.In the third growth stage,the growth rate fluctuated.As artificial Robinia peseudoacacia grew, soil water content of the deep soil layer (5～8 m)of artificial Robinia peseudoacacia also fluctuated, indicating that artificial Robinia peseudoacacia growth was dominated by soil moisture.In addition restoration possibility of soil moisture of deep soil profile was also analyzed.

关 键 词：黄土丘陵区 人工刺槐林 土壤水分演变 

分 类 号：S152.7[农业科学—土壤学] S792.27[农业科学—农业基础科学]