撫育間伐對(duì)遼東山區(qū)人工紅松林土壤物理性質(zhì)及持水特性的影響1)

祁金虎　楊會(huì)俠　丁國泉　陶玉柱　白榮芬

(遼寧省森林經(jīng)營研究所，丹東，118000)

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撫育間伐對(duì)遼東山區(qū)人工紅松林土壤物理性質(zhì)及持水特性的影響1)

祁金虎楊會(huì)俠丁國泉陶玉柱白榮芬

(遼寧省森林經(jīng)營研究所，丹東，118000)

摘要通過野外調(diào)查取樣和室內(nèi)測(cè)試與分析，研究了不同撫育間伐強(qiáng)度下,人工紅松林土壤物理性質(zhì)及其持水特性。結(jié)果表明：與對(duì)照相比，0～20 cm土層，弱度、中度和強(qiáng)度撫育間伐處理的土壤密度分別減少了1.36%、17.10%、13.46%；土壤總孔隙度分別是對(duì)照的1.02、1.14、1.23倍，土壤毛管孔隙度分別是對(duì)照的1.00、1.14、1.21倍，土壤非毛管孔隙度分別是對(duì)照的1.13、1.14、1.40倍；土壤最大持水量與對(duì)照相比分別提高了0.52%、13.90%、23.18%，土壤非毛管持水量分別高出了12.79%、14.30%、39.65%；土壤飽和入滲系數(shù)分別是對(duì)照的2.81、3.45、4.99倍。>20～40 cm土層所表現(xiàn)出的規(guī)律與0～20 cm土層基本一致，方差分析顯示，各撫育間伐處理均能顯著改善土壤的物理性質(zhì)及其持水性能，且以中度及強(qiáng)度撫育間伐處理的效果更優(yōu)。

關(guān)鍵詞撫育間伐；遼東山區(qū)；紅松；土壤物理性質(zhì)；持水特性

分類號(hào)S714.7

Effect of Thinning on Soil Physical Properties and Water-holding Capacity ofPinuskoraiensisPlantation in Liaodong Mountain Area//

Qi Jinhu, Yang Huixia, Ding Guoquan, Tao Yuzhu, Bai Rongfen

(Forest Management Research Institute of Liaoning Province, Dandong 118000, P. R. China)//Journal of Northeast Forestry University，2016,44(5)：48-51.

We studied the soil physical properties and water-holding capacity ofPinuskoraiensisplantation under three thinning conditions (light, medium and heavy intensity thinning) by field survey sampling and indoor test for the reasonable thinning operation ofPinuskoraiensisplantation in Liaodong Mountain Area. At the depth of 0-20 cm, the soil bulk density was decreased by 1.36%, 17.10%, 13.46%, respectively, for non-thinning. Compared with non-thinning, the soil total porosity was 1.02, 1.14 and 1.23 times of that of the control. The soil capillary porosity was 1.00, 1.14 and 1.21 times of that of the control, and non-capillary porosity was 1.13, 1.14 and 1.40 times of that of the control, respectively. The soil maximum water-holding capacity and non-capillary water-holding capacity both were increased by 0.52%, 13.90%, 23.18% and 12.79%, 14.30%, 39.65%, respectively. The permeability coefficients was 2.81, 3.45, and 4.99 times of that of the control under three thinning conditions. At the depth of 20-40 cm, the thinning treatments had the similar changes in soil physical properties and water-holding capacity with the upper 0-20 cm soil layer. By variance analysis, the thinning significantly improved the effects of soil physical properties and water conservation, especially in medium and heavy intensity thinning.

KeywordsThinning; Liaodong mountain area; Pinus koraiensis; Soil physical properties; Water-holding capacity

紅松(Pinuskoraiensis)作為東北地區(qū)珍貴的地域性樹種之一，因其木材質(zhì)量好，種子經(jīng)濟(jì)價(jià)值高，自20世紀(jì)30年代開始在遼東山區(qū)進(jìn)行大面積營造，截止目前已有80多年的人工栽培歷史。從促進(jìn)林分生長(zhǎng)、提高林分結(jié)實(shí)能力等方面考慮，應(yīng)該對(duì)其進(jìn)行合理撫育間伐作業(yè)。有關(guān)人工紅松林的營造技術(shù)、病蟲害防治、林木生長(zhǎng)因子(樹高、胸徑、生物量)、種子經(jīng)濟(jì)價(jià)值等前人已做了大量研究[1-6]。但有關(guān)人工紅松林撫育對(duì)土壤理化性質(zhì)、特別是土壤持水性能的研究，卻并不多見。