亚热带6种老龄天然林及杉木人工林的枯落物持水性能  

The Water Retention Characteristic of Litter in Six Old Growth Natural Forests Compared with a Cunninghamia lanceolata Plantation in Subtropical Zone

作　　者：马书国[1,2] 杨玉盛[1,2] 谢锦升[1,2] 郭剑芬[1,2] 杨智杰[1,2] 高玉春[1,2] 

机构地区：[1]福建师范大学地理科学学院,福州350007 [2]湿润亚热带生态-地理过程省部共建教育部重点实验室,福州350007

出　　处：《亚热带资源与环境学报》2010年第2期31-38,共8页Journal of Subtropical Resources and Environment

基　　金：国家自然科学基金(30800877)

摘　　要：通过对福建建瓯万木林自然保护区6种老龄天然林:木荷(Schima superba,SCS)、罗桴栲(Castanopsis fabri,CAF)、观光木(Tsoongiodendron odorum,TSO)、浙江桂(Cinnamo-mum chekiangense,CIC)、细柄阿丁枫(Altingia gracilipes,ALG)、米槠(Castanopsis carlesii,CAC)及杉木人工林(Cunninghamia lanceolata,CUL)枯落物现存量和持水特性的研究表明,各林分枯落物现存量分别为木荷7.22 t.hm-2、细柄阿丁枫6.79 t.hm-2、浙江桂6.70 t.hm-2、观光木6.66 t.hm-2、罗桴栲6.57 t.hm-2、米槠5.96 t.hm-2和杉木人工林4.82 t.hm-2.最大持水率平均值是人工林(207.98%)>天然林(179.38%).各林分最大持水量分别为木荷13.33t.hm-2、细柄阿丁枫13.32 t.hm-2、观光木13.18 t.hm-2、罗桴栲10.84 t.hm-2、浙江桂10.52t.hm-2、米槠10.30 t.hm-2和杉木人工林9.95 t.hm-2.枯落物平均现存量和平均最大持水量均为天然林(6.65 t.hm-2,11.95 t.hm-2)大于杉木人工林(4.82 t.hm-2,9.95t.hm-2).影响林地枯落物持水量的主要因素是枯落物现存量.各林分主要树种半分解层的枯落物现存量及最大持水量均大于未分解层.The standing crop and water retention characteristic of litter were studied in six old growth natural forests of Schima superba Gardn.and Champ.（SCS）,Castanopsis fabri Hance（CAF）,Tsoongiodendron odorum Chun（TSO）,Cinnamomum chekiangense Nakai（CIC）,Altingia gracilipes Hemsl（ALG）,and Castanopsis carlesii（Hemsl.） Hayata（CAC）,and compared with that of a plantation of Chinese fir（Cunninghamia lanceolata Lamb.,CUL） in subtropical region.The results showed that： the standing crop of litter in study forests was in the sequence of SCS（7.22 t·hm^-2）,ALG（6.79 t·hm^-2）,CIC（6.70 t·hm^-2）,TSO（6.66 t·hm^-2）,CAF（6.57 t·hm^-2）,CAC（5.96 t·hm^-2） and CUL（4.82 t·hm^-2）.The maximum water-holding rate of litter in Chinese fir plantation（207.98%） was larger than those of the six natural forests（179.38%）.The maximum water-holding capacity was in the sequence of SCS（13.33 t·hm^-2）,ALG（13.32 t·hm^-2）,TSO（13.18 t·hm^-2）,CAF（10.84 t·hm^-2）,CIC（10.52 t·hm^-2）,CAC（10.30 t·hm^-2） and CUL（9.95 t·hm^-2）.Mean standing crop of litter and maximum water-holding capacity of natural forests（6.65 t·hm^-2,11.95 t·hm^-2） were both higher than those of the plantation（4.82 t·hm^-2,9.95 t·hm^-2） respectively.The standing crop of litter mainly affects its water-holding capacity.The total amount of litter and maximum water-holding capacity of the dominant species on half-decomposed litter layer were higher than those of undecomposition layer.

关 键 词：枯落物 主要树种 现存量 最大持水量 最大持水率 

分 类 号：S715[农业科学—林学]