黄土丘陵区不同年限柠条林地土壤质量变化_张晋爱.pdfVIP

2007, 26( ) : 136- 140 J ournal of A g ro- E nv ironm ent S cience 1, 2 1, 2 1 1 1 3 张晋爱 , 张兴昌 , 邱丽萍 , 丛 伟 , 闫 峰 , 薛晓辉 ( 1. , 712100; 2. , 712100; 3. , 551700) : , 0102226 30 a : , 10~ 26 a; , , ; , , : ; ; ; : X 825 : A : 1672- 2043( 2007)- 0 136- 05 Dynam ics of Soil Quality in a L oess H illy A rea Grown w ith Caragana K orshinsk ii 1, 2 1, 2 1 1 1 3 ZHANG Jin- a i , ZHANG X ing- chang , Q U L -i ping , CONG W e i, YAN Feng , XUE X iao- hui ( 1. Co llege ofR esource and Env ironm enta l, N orthw est Sc-i T ech U niversity of A gr iculture and F orestry, Y ang ling 7 12100, Ch-i na; 2. nstitute of So il and W ater Conserva tion, Ch inese A cadem y of Sc ience and M inistry ofW a ter R esource, State K ey Lab of So il E ros ion and D ry land F arm ing on Loess P lateau, Y ang ling 7 12 100, China; 3. D epartm ent ofEnv ironm ent and B io log ica l Sc-i ences, B ij ie Co llege, B ij ie 551700, Ch ina) A bstrac t: Based on a fie ld investigation and an indoor ana ly sis, phys ica l characters, nutrition and enzym e activ ity of so ils co-l lected from a loess h illy areaw ere studied in the presence of 0, 10, 22, 26 and 30 years Carag ana korsh insk ii, in o rder to assess effects of so il quality by an ag e sequence of 0~ 30 years C. T he results showed that the shrub ( C. korsh insk ii) cou ld mi prove contents of bo th so il clay and so il silt, and lowe r bu lk density by the g rown p lant w ith 10 to 26 years. t cou ld also increase con- tents of so il org an ic m atte r, to tal nitrogen, nitrate, ammon ium, rap id ly ava ilable phosphorus and po tassium, mi prove so il enzym e activ ity as years. H ow eve r, optmi a l condition fo r so il enzym es activ ity w as discovered a