川中人工纯柏林凋落物分解动态研究-生态学杂志.PDF

Chinese Journal of Ecolo gy 2005 , 24( 10) : 1147 ~ 1150 * 田茂洁 ( 西华师范大学生命科学学院, 南充637002) , , 33 , 433 , 10 , 24 , 86 , 12 , , , , , S7 185 A 1000- 4890 ( 2005) 10 - 1147 - 04 Decomposition and nutrient release of pure Cupr ess us forest litter in Sichuan Basin. T IAN M aojie( College of L if e Science, West China Normal University, Nanchong 637002, China) . Chinese Journal of Ecology , 2005, 24( 10) : 1147 ~ 1150 . T he s udy resuc s show ed ha he mineraliza ion of org anic carbon and o her nu rien s in Cup ressus li er in Sichuan Basin w as very slow , w i h a half live of 33 w eeks for or ganic carbon , 4 33 w eeks for ni rogen , 10 w eeks for phosphorus, 24 w eeks for po assium , 86 w eeks for calcium , and 12 w eeks for magnesium . T he ni ro gen shor ag e induced by slow miner aliza ion of he li er could be he main f ac or res ric ing he ear ly g row h of Cup ressus . I is necessary o in r oduce some fasg row h broadleaf w oody species in managing pur e ar if icial Cup ressus fores o impro ve li er proper y, o speed up nu r ien release, ur nover and cycling, and o enhance economic benef i s . Key words Cup ressus for es , li ers, nu rien s mineraliza ion , Sichuan Basin . 1 ( ) ( , ) , , 20 70 , , , , , CO2 , , , , ( ) [ 7, 8] , , , , , , , 5