干旱区生态环境知识资源中心(Arid): 塔里木沙漠公路防护林凋落物的持水特性

Arid

	塔里木沙漠公路防护林凋落物的持水特性
其他题名	Study on Water Holding Capacity of Litters in Shelterbelt along the Tarim Desert Highway
	张栋栋; 靳正忠; 徐新文; 李生宇; 雷加强; 王永东; 王迎菊
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2012
卷号	29 期号:6 页码:1046-1053
中文摘要	采用野外典型抽样和室内浸水的方法,对4种定植年限不同的塔里木沙漠公路防护林带内凋落物的储量、持水量和吸水速率进行研究。结果表明:①不同定植年限防护林内凋落物储量依次为:13a林带(42.3t·hm~(-2))>6a林带(39.6t·hm~(-2))>10a林带(39.1t·hm~(-2))>7a林带(16.2t·hm~(-2))。②沙漠公路防护林的林下未分解层凋落物持水量的排序为:梭梭>柽柳>沙拐枣;而半分解层凋落物持水量的排序是:柽柳>梭梭>沙拐枣,且防护林内凋落物最大持水量半分解层均大于未分解层。③各林龄不同树种不同分解程度的凋落物持水量与浸水时间之间呈对数关系,最佳拟合关系式为:W=b+alg t,吸水速率与浸水时间之间呈幂函数关系,关系式为:V=kt~n,凋落物吸水速率在0~1h内急剧下降,4h以后下降平稳,其吸水作用逐渐减小。
英文摘要	In this study, the storage, water holding capacity and water absorption rate of litters in shelterbelts with different ages along the Tarim Desert Highway were studied using the methods of typical sampling and soaking extraction. The results showed that the litter storage in shelterbelts with four different ages was in an order of 13-year-old shelterbelt (42.3 t·hm~(-2))>6-year-old one (39.6 t·hm~(-2))>10-year-old one (39.1 t·hm~(-2))>7-year-old one (16.2 t·hm~(-2)).The water holding capacity of the undecomposed litters in shelterbelts along the desert highway was in an order of Haloxylon>Tamarix>Calligonum, and that of the semi-decomposed litters was in an order of Tamarix>Haloxylon>Calligonum. The maximum water holding capacity of litters in the semi-decomposed layer was higher than that in the undecomposed layer. There was a logarithmic relationship between water holding capacity of litters with different decomposition degrees and watering time, and the optimal fitting relation equation was W=b+alg t, but a power function relationship between water absorption rate and watering time, and the formula was V=kt~n. The water absorption rate was decreased sharply within the first one hour, and reduced stably after 4 hours. Water sorption of litters was decreased gradually.
中文关键词	沙漠公路 ; 防护林 ; 凋落物 ; 持水量 ; 吸水速率 ; 塔里木
英文关键词	desert highway shelterbelt litter water holding capacity water absorption Tarim Basin
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:4692745
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228071
作者单位	中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	张栋栋,靳正忠,徐新文,等. 塔里木沙漠公路防护林凋落物的持水特性[J]. 中国科学院新疆生态与地理研究所,2012,29(6):1046-1053.
APA	张栋栋.,靳正忠.,徐新文.,李生宇.,雷加强.,...&王迎菊.(2012).塔里木沙漠公路防护林凋落物的持水特性.干旱区研究,29(6),1046-1053.
MLA	张栋栋,et al."塔里木沙漠公路防护林凋落物的持水特性".干旱区研究 29.6(2012):1046-1053.