秃杉林和连栽杉木林水源涵养功能的差异

Differences of Water Conservation Function between Taiwania flousiana Plantation and Successive Rotation Plantation of Cunninghamia lanceolata

为探究秃杉(Taiwania flousiana)林和杉木(Cunninghamia lanceolata)林水源涵养功能的差异,为秃杉林的经营管理提供依据,以23年生秃杉林和连栽杉木林为研究对象,对两种林分的林冠层、林下植被层、凋落物层和土壤层的持水性能进行比较分析。结果表明,秃杉林和杉木连栽林林冠层持水量分别为31.66和12.25 t/hm^(2);林下植被层持水量分别为3.84和4.13 t/hm^(2);凋落物层持水量分别为20.82和15.72 t/hm^(2);土壤层(0~80 cm)持水量分别为4320.80和4214.00 t/hm^(2)。秃杉林的总持水量为4377.12 t/hm^(2),比连栽杉木林(4246.11 t/hm^(2))高出3.09%。秃杉林表现出较强的水源涵养功能。

In order to research differences of water conservation function between Taiwania flousiana planta⁃tion and Cunninghamia lanceolata plantation,which could provide basis for management of T.flousiana planta⁃tion,water-holding abilities of canopy layer,undergrowth plant layer,litter layer and soil layer in two planta⁃tions were compared and analyzed.Results showed that water-holding capacities of canopy layer in T.flousiana plantation and successive rotation plantation of C.lanceolata were 31.66 and 12.25 t/hm^(2);water-holding capaci⁃ties of undergrowth plant layer were 3.84 and 4.13 t/hm^(2);water-holding capacities of litter layer were 20.82 and 15.72 t/hm^(2);water-holding capacities of soil layer(0~80 cm)were 4320.80 and 4214.00 t/hm^(2),respectively.The total water-holding capacity of T.flousiana plantation was 4377.12 t/hm^(2),which was higher by 3.09%than that of successive rotation plantation of C.lanceolata(4246.11 t/hm^(2)).In conclusion,the T.flousiana plantation showed higher water conservation function.