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Position: Home > Articles > Characteristics of Water Utilization in Border Row and Optimum Disposition Structure in Plantation in Arid and Semi-Arid Region Scientia Silvae Sinicae 2004,40 (5) 3-9

干旱、半干旱区人工林边行水分利用特征与优化配置结构研究

作  者：
杨文斌;王晶莹
单  位：
内蒙古林业科学研究院
关键词：
边行优势;行列式林分;水分利用特征
摘  要：
针对干旱半干旱区人工林的边行优势明显优于湿润区的现象 ,分别在不同气候区对当地的主要造林树种的片林及其边行外侧和行列式林分带间的沙土水分利用特征进行了测定 ,发现树木能使边行外侧 8～ 10m土壤中的含水率降低 ,并形成一个土壤湿度梯度 ,使 8～ 10m及其以外土壤中的水分向树木基部方向的沙土中渗透 ,这些侧渗的水分成为干旱年份边行树木正常生长的必要条件 ;说明林分边行树木存在一个土壤水分主要利用带和土壤水分渗漏补给带 ,进而提出了合理配置的人工林土壤水分利用特征模式。最后论述了按照该模式构建的行列式林分 ,在同等密度或覆盖度时 ,其防风固沙效益显著高于等株行距均匀分布或随机分布的林分。
译  名：
Characteristics of Water Utilization in Border Row and Optimum Disposition Structure in Plantation in Arid and Semi-Arid Region
作  者：
Yang Wenbin\ Wang Jingying (Inner Mongolia Academy of Forestry Science Huhhot 010010)
关键词：
Dominance in border row, Stands in orderly ranks,Characteristics of water utilization
摘  要：
Based on the phenomenon that the dominance in border row of plantation in arid and semi_arid region is obviously better than that in humid region, characteristics of water utilization of sand soil in stands of local main silviculture tree species and their outside of border row and among belt of stands in orderly ranks have been determined in different climatic regions. The trees can reduce the sand soil water content at 8～10 m in the outside of border row. And gradient of soil water is formed that can make the water permeate from the soil at and beyond 8～10 m to basal portion of trees, which becomes the necessary condition of normal growth of trees in border row in drought year. It indicates that there are main utilization belt of soil moisture and supplying belt of soil water leakage in border rows of stands. And the mode of characteristics of soil water utilization in plantation with reasonable disposition has been put forward. Finally, this paper discusses that the stands in orderly ranks planted according to the mode at same density and coverage is obviously better than the stands distributed evenly at same distances between rows and hills at the aspect of benefits of wind break and sand fixation.

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