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《Journal of Fujian Forestry Science and Technology》 2019-02
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Study on the Water-conserving Function of Different-aged Compound Storied Castanopsis fissa and Cunninghamia lanceolata Plantations

HUANG Jiantao;Forestry Bureau of Nanping City;  
In order to reveal the water-conserving function of different-aged compound storied Castanopsis fissa and Cunninghamia lanceolata plantations.In 2017,the water content,soil physical properties and water conservation function of 4 different retention density of C.lanceolata age-complex mixed-forest forests were studied in Fujian Sha County.The results showed that soil density decreased respectively above 8.86% and 7.78%% in 0~20 cm layer of the soil in different-aged compound storied plantations comapred with that before inter-cropped and pure C.lanceolata control.while structure destruction rate decreased above 15.12% and 11.30%,respectively.Similarly,the content of water-stable aggregates larger than 0.25 mm increased above 12.55% and 9.38%,Porosity of non-capillary tubes increased above 14.87% and 10.76%,Porosity of capillary tube increased above 15.32% and 11.68%,Meanwhile,total porosity increased above 15.25% and 11.53%.All the above indexes of soil show the same law of change in 20~40 cm layer.Compared with the pure forest of C.lanceolata,the total water holding quantity was enhanced above 218.312 t·hm~(-2),enhanced above 14.68%,initial infiltration speed was enhanced above 13.29%,infiltration speed was enhanced above 14.16%,while surface runoff coefficiency was decreased above 10.34%,the introduction of the C.fissa in the C.lanceolata forest significantly improved the physical properties of the soil and enhanced the water conservation function of the forest.
【Fund】: 福建省地方标准项目(闽粤栲栽培技术规范 闽质监标[2015]94号);; 福建省标准化专项资金(闽粤栲栽培技术规范 闽财建指[2016]75号);; 三明市林业科技研究项目(闽粤栲栽培技术规范 明财(农)指[2015]54号);; 三明市科技项目(不同更新方式闽粤栲林分特征与高效培育关键技术 明科成[2016]14号)
【CateGory Index】: S718.5
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