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浅议四川盆地丘陵区的水土保持 - 水土保持研究
12 2 . 12 . 2 Vo l N o 2005 4 Resear ch o f Soil and Water Con serv ation A pr. , 2005 1 2 何淑勤, 郑子成 ( 1. , 625014 2 . , 625014) : , , , : : S 157: A : 1005-3409( 2005) 02-0 10 1-02 Preliminary Opinions on the Soil and Water Conservation in Hilly Areas in Sichuan Basin 1 2 - , - HE Shu qin ZHEN G Zi cheng ( 1. Colleg e of Forestry and Gar dening , S ich uan A g r icultur e Univ er sity , Ya an , S ich uan 625014, Ch ina 2 . Colleg e of R esour ces and E nv ir onment , S ichuan A g r ic ult ure Univ er sity , Ya an , S ichuan 6250 14 , China) Abstract: Soil and w ater loss is sever e in hilly ar eas o f Sichu an b asin . Ero sion em erg ed w ith m any ch ar acterist ics . T he r atio of ero sio n w as high to slop e f ar mland th an the o thers, t he ty p es of soil and w ater lo sses w ere in m any w ays, t he t im e cent ralized , mov ing r atio w as low , esp ecially the app ear ance o f sto ne w as sever e dur ing the co ur se of er osio n becau se of to po gr aphy , r ock , clim at e and hum an activities . A t the sam e tim e the counterm easur es and pro po sals f o r co nt ro lling and prev ent ing w ater and soil losses w er e g iven o ut . Key words: hilly areas o f basin soil and w ater loss soil and w at er con ser vation , 65% , 1 , 7 9 4 89 . 1 mm , , , 16 3
有哪些信誉好的足球投注网站
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