Hydrological Effect of Pinus tabulaeformis,Platycladus orientalis and Hippophae rhamnoides Mixed Plantation in Gully Region of Loess Plateau

HAN En-xian; HAN Gang; BO Ying-sheng

The experiment applied national standard forest analysis method to study of hydrological effect of Pinus tabulaeformis,Platyclodus orientalis and Hippophae rhamnoides mixed plantation.The results showed that annual mean precipitation inside the mixed plantation was 20.1% lower than that ouside the mixed plantation.Its seasonal varieties in summer,autume,spring and winter gradually decreased.In mixed plantation,the annual mean air temperature was 0.1℃ lower than it in pure plantation and annual mean relative humidity was 4.5% higher than that in pure plantation.In mixed plantation,the cut discharges of tree layers increased by 56.6% and shrub layers increased by 395.7%.The annual mean runoff on the ground and modulus of runoff were 105.8 L and 10.58 m3·km-2·a-1 inside the mixed plantation.But those in pure plantation were 1 349.05 L and 134.9 m3·km-2·a-1.The soil erosion modulus was 0.65 t·hm-2·a-1 inside the mixed plantation but in pure plantation was 9.2 t·hm-2·a-1.The litter extant amount increased by 200% and litter water-holding capacity was 3.1 times of its own weight,the soil volume weight and compactness reduced by 6.3% and 17.7%,the water content,porosity and air permeability of soil increased by 6.1 %,13.9% and 20.3%.The soil physical property was improved.In different soil layers the soil volume weight and compactness gradually increased from the upper fo the cower strata.The porosity and air permeability of soil was the best in topsoil but decreased downwards.In mixed plantation the soil porosities of non-capillary in bottom,middle and top soil layers increased by 113.3%,38.6% and 32.6%.The maximal water-holding content,the minimum water-holding content and capillary water-holding content in mixed plantation were respectively 11.0%,9.8% and 10.5% higher than those in pure plantation,36.0%,16.0% and 25.6% higher than those in wild land.The water total storage and water storage of 0～40 cm soil layer in mixed plantation were 12.4%,22.7% higher than those in pure plantation and wild land.

1. College of Forestry, Northwest Sci-Tech of Agriculture and Forestry University, Yangling 712100, Shaanxi, China

Received Date: 2006-02-10

Abstract: The experiment applied national standard forest analysis method to study of hydrological effect of Pinus tabulaeformis,Platyclodus orientalis and Hippophae rhamnoides mixed plantation.The results showed that annual mean precipitation inside the mixed plantation was 20.1% lower than that ouside the mixed plantation.Its seasonal varieties in summer,autume,spring and winter gradually decreased.In mixed plantation,the annual mean air temperature was 0.1℃ lower than it in pure plantation and annual mean relative humidity was 4.5% higher than that in pure plantation.In mixed plantation,the cut discharges of tree layers increased by 56.6% and shrub layers increased by 395.7%.The annual mean runoff on the ground and modulus of runoff were 105.8 L and 10.58 m3·km-2·a-1 inside the mixed plantation.But those in pure plantation were 1 349.05 L and 134.9 m3·km-2·a-1.The soil erosion modulus was 0.65 t·hm-2·a-1 inside the mixed plantation but in pure plantation was 9.2 t·hm-2·a-1.The litter extant amount increased by 200% and litter water-holding capacity was 3.1 times of its own weight,the soil volume weight and compactness reduced by 6.3% and 17.7%,the water content,porosity and air permeability of soil increased by 6.1 %,13.9% and 20.3%.The soil physical property was improved.In different soil layers the soil volume weight and compactness gradually increased from the upper fo the cower strata.The porosity and air permeability of soil was the best in topsoil but decreased downwards.In mixed plantation the soil porosities of non-capillary in bottom,middle and top soil layers increased by 113.3%,38.6% and 32.6%.The maximal water-holding content,the minimum water-holding content and capillary water-holding content in mixed plantation were respectively 11.0%,9.8% and 10.5% higher than those in pure plantation,36.0%,16.0% and 25.6% higher than those in wild land.The water total storage and water storage of 0～40 cm soil layer in mixed plantation were 12.4%,22.7% higher than those in pure plantation and wild land.

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Reference (13)

[1]	何兴元,张成刚,杨思河.固N树种在混交林中的作用研究Ⅰ.沙棘混交林内根瘤固N与林木生长[J]..应用生态学报, 1996, 7(4) : 354～358
[2]	高甲荣,肖斌,张东升.国外森林水文研究进展[J] .水土保持学报, 2001, 15 (5) : 60～64
[3]	韩恩贤,韩刚.黄土高原沟壑区沙棘人工混交林改土效应研究[J]. 自然资源学报, 2005, 20 (6) : 879～884
[4]	邹桂霞,李铁军,李晓华1辽西北缓坡地杨树沙棘混交林地土壤水分变化规律研究[J].水土保持学报, 2000, 14 (5) : 55～58
[5]	尹光彩,周国逸,刘景时.鼎湖山针阔叶混交林生态系统水文效应研究[J]1热带亚热带植物学报, 2004 (12) : 195～201
[6]	陈礼光,郑郁善,林金国.突脉青冈林分水文效应研究[J].福建林学院学报, 1999, 19 (2) : 170～173
[7]	马祥庆,何智英,俞新妥.杉木幼林生态系统水文效应研究[J].福建林学院学报, 1994, 14 (1) : 35～39
[8]	王平,闫成璞,王玉玺.人工林植被水文效应研究[J] .黑龙江水利科技, 1999 (3) : 5～7
[9]	丁军,王兆骞,陈欣.南方红壤丘陵区人工林地水文效应研究[J].水土保持学报, 2003, 17 (1) : 141～146
[10]	李树人,赵永,闫志平,等.豫西伏牛山区日本落叶松林水文效应研究[J]1林业科学, 1999, 35 (专刊1) : 48～53
[11]	胡承海,赵荣慧,郭荫槐. 辽西油松混交林速生机理的研究[J]1林业科技通讯, 1987 (2) : 4～7
[12]	郑郁善.衫木毛竹混交林水文效应研究[J] .福建林学院学报, 1995, 15 (2) , 170～173
[13]	陈礼光,郑郁善,林金国.突脉青冈林分水文效应研究[J].福建林学院学报, 1999, 19 (5) : 325～330

Hydrological Effect of Pinus tabulaeformis,Platycladus orientalis and Hippophae rhamnoides Mixed Plantation in Gully Region of Loess Plateau

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