绵阳官司河流域3种不同林分枯落物层储量及持水特性分析  

An Analysis of the Litter Reserves and the Water Retaining Capacity of Three Kinds of Different Stand in the Reaches of the Guansi River in Mianyang

作　　者：吴雪仙[1] 张发会[1] 龚固堂[1] 慕长龙[1] 

机构地区：[1]四川省林业科学研究院,四川成都610081

出　　处：《四川林业科技》2010年第6期15-20,共6页Journal of Sichuan Forestry Science and Technology

基　　金：林业公益性行业科研专项(20100400208)

摘　　要：对绵阳官司流域不同林分枯落物储量及持水量进行研究,结果表明:3种不同林分枯落物的储量顺序为松柏混交林(8.09t.hm-2)>马尾松林(7.77 t.hm-2)>柏木纯林(3.07 t.hm-2),持水能力的大小顺序为柏木纯(3 709 g.kg-1)>松柏混交林(3 392 g.kg-1)>马尾松林(312 2 g.kg-1),虽然林分不同,但在持水过程中均表现出相似性,即1 h前吸水量最大,并在2 h^4 h间达到较稳定的状态。各林分地表枯落物对降雨有效拦蓄量的大小顺序为马尾松林>松柏混林>柏木纯林。Studies were vnade of litter reserves and retaining capacity in three kinds of different forests in the reaches of Guansi River in Mianyang.The results showed that the total litter stock of the three kinds of stand displayed a descending order as follows： the mixed stand of Pinus massoniana and cupressus fundbris（8.09 t·hm-2）the Pinus massoniana stand（7.77 t·hm-2）the Cupressus fundbris stand（3.07 t·hm-2） and the capacity of preserving water indicated a descending order as follows： the Cupressus fundbris stand（3 709g·kg-1）the mixed stnad of Pinus massoniana and Cupressus fundbris（3 392 g·kg-1）the Pinus massoniana stand（3 122 g·kg-1）.As for different forest types,the variation in process of preserving water of litter was not remarkable.The amount of absorbed water was large before 1 hour and then became comparable stable in the later 2 hours^4 hours.The modificed interception of litter layers in different kinds of stand represented an order as follows：the Pinus massonianathe mixed of Pinus massoniana and Cupressus fundbristhe Cupressus fundbris.

关 键 词：绵阳官司河 枯落物 储量 持水量 

分 类 号：S714[农业科学—林学]