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当前位置: 首页 > 文章 > 喀斯特山地人工杜仲林枯落物和土壤持水特性初步研究 林业资源管理 2003 (6) 29-33
Position: Home > Articles > Preliminary Study on the Water Holding Characteristics of the Litter and Soil of Eucommia Ulmoides Plantation under Two Types of Limestone in Karst Mountainous Areas Forest Resources Management 2003 (6) 29-33

喀斯特山地人工杜仲林枯落物和土壤持水特性初步研究

作  者：
聂朝俊;彭智坚
单  位：
关岭县林业局;贵州省林业调查规划院
关键词：
喀斯特山地;人工杜仲林;持水特性;枯落物;土壤容重
摘  要：
研究喀斯特山地两种母岩发育土壤上生长的人工杜仲林枯落物和土壤的持水特性。结果表明:杜仲林枯落物吸水速度快、持水量大。浸泡10小时的时候(吸水接近饱和时),白云质石灰岩和泥质灰岩发育的土壤上生长的杜仲林枯落物持水量分别是3144 4g kg-1和2830 0g kg-1,是其自身重量的314 4%和283%。土壤容重分别为1 14g cm-3、1 27g cm-3;最大持水量为43 66%、38 38%;毛管持水量为29 60%、24 83%;田间持水量为12 70%、20 92%。因此,杜仲不仅是一个用途广泛的优良经济林树种,而且也是公益林建设中营造水土保持林的优良树种。另外,就枯落物和土壤特性而言,白云质石灰岩发育的土壤上生长的人工杜仲林持水能力比泥质灰岩发育的土壤上生长的人工杜仲林强。
译  名：
Preliminary Study on the Water Holding Characteristics of the Litter and Soil of Eucommia Ulmoides Plantation under Two Types of Limestone in Karst Mountainous Areas
作  者：
NIE Chaojun,PENG Zhijian(1.Guizhou Provincial Institute of Forest Inventory and Planning, Guiyang 550003, Guizhou; 2.Forest Bureau of Guanling County, Guanling 561300,Guizhou,China)
关键词：
karst mountainous areas,Eucommia ulmoides plantation, water holding characteristics, litter, the bulk density of soil
摘  要：
Study has been done on the water holding characteristics of the litter and soil of Eucommia Ulmoides plantation under two types of limestone in karst mountainous areas of Guanling County. The results show that, for the litter of Eucommia Ulmoides plantation, the water absorption speed is rapid, the capillary holding capacity is great. After being dipped in water for 10 hours (when they are saturated), the water held by Eucommia Ulmoides plantation litters growing in soils originated from dolomite and marlaceous limestone are respectively (3?144.4)g.kg~(-1) and (2?830.0)g.kg~(-1), accounting for 314.4% and 283% of their own dry weight. The bulk density, maximum water holding capacity, capillary water holding capacity, and field water holding capacity of the Eucommia Ulmoides plantation soil originated from dolomite limestone are respectively 1.14g.cm~(-3), 43.66%, 29.60% and 12.70%, while those of the soil from marlaceous one are 1.27g.cm~(-3), 38.38%, 24.83% and 20.92%, respectively. Therefore, Eucommia Ulmoides is not only an excellent species of economic tree, but also a good one for soil and water conservation. As a whole, Eucommia Ulmoides plantation from dolomite limestone is superior to that from marlaceous limestone in terms of water holding capacities of litters and soils.

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