黄土丘陵沟壑区退耕地植被恢复中的土壤水分变化研究.pdfVIP

24 5 V ol . 24 , N o. 5 2004 10 Bu llet in of Soil a nd Wa t er Conser vation Oct . , 2004 马祥华, 白文娟, 焦菊英, 焦 峰 ( , 712100) , , , 60 cm ; , , , , ; , 3 , , , ; , , , + , , , ; ; ; 1000288 ( 2004) 152. 75 B X S Var iation of Soil Water in Abandoned Lands During Vegetation Restoration in Hilly and Gully Regions on Loess Plateau MA Xian g-hua, BAI Wen -ju an , JIAO Ju-y in g , J IAO Feng ( I n st itut e of Soil an d Wa t er Conser vat ion, Chinese Acad emy of S ciences an d Mini stry of Wat er Resour ces, Ya ng ling 712100, Sh a anx i P r ovince, China ) Abstr act Th e variat ion of soil wat er in t he process of veget ation r est orat ion on aban doned lands in Zhifang- gou , Xiannan gou, Xigou and Gu oyan gwan wat ersh eds of t h e loess h illy and gu lly region was stu died . Th e resu lt s show t h at soil wat er content below 60 cm depth gradu al ly decreases wit h increasing t im e since l an d was left t o regen er at e. R esult s of th e soil wat er cont ent evalu ation for different topograph ies suggest t h e soil wat er cont ent on n ort h -facin g slop es is higher t h an th at on sout h -facing slopes; th e soil water cont ent at t he lower sl opes of h ills is h igh er t han t hat at upp er slop es of h ills; an d soil wat er cont ent decreases with t h e increasing slop e