山东砂石山区不同林分类型土壤的蓄水效益  

Soil water storage efficiency of different stand types in Sandy Mountain of Shandong Province

作　　者：胡建朋[1] 杨吉华[1] 罗明达[1] 李星辰[1] 

机构地区：[1]山东省土壤侵蚀与生态修复重点实验室山东农业大学林学院,山东泰安271018

出　　处：《中国水土保持科学》2011年第5期67-72,共6页Science of Soil and Water Conservation

基　　金：世界银行贷款山东生态造林项目"干旱瘠薄山地造林树种及造林模型选择研究"(SEAP-kr-1P112759)

摘　　要：以山东省临朐县辛庄水土保持试验站营造的5种林分为研究对象,研究不同林分类型土壤蓄水效益。结果表明:刺槐、五角枫、黄连木等阔叶树种林分的枯落物多,枯落物腐烂分解后改善土壤理化性状良好,增加了土壤蓄水量,3种阔叶树种林分与对照(各林分类型附近立地条件相同的荒坡)相比增加的土壤饱和贮水量以刺槐林的最大(为549.8 m3/hm2),其次是五角枫林(为416.9 m3/hm2)和黄连木(为392.3 m3/hm2);而黑松、侧柏等针叶树种林分相应地增加土壤饱和贮水量较少,分别仅为257.9和223.7 m3/hm2。通过对枯落物已分解层蓄积量与0～20 cm土壤理化性状的相关分析表明,不同林分类型的枯落物已分解层蓄积量与土壤有机质质量分数、土壤非毛管孔隙度呈极显著相关性,与土壤密度、土壤总孔隙度呈显著相关性,与土壤毛管孔隙度相关但不显著。计算结果显示,5种林分类型的土壤蓄水效益表现为刺槐林>五角枫林>黄连木林>黑松林>侧柏林。The study on soil water storage of five stand types were conducted in Soil and Water Conservation Experiment Station of Linqu County.The results show that： Robinia pseudoacacia Linn.,Acer mono Maxim.and Pistacia chinensis Bunge.stands of more litter layer,which improved soil physical and chemical properties and increased soil water storage capacity after decomping.Compared to control,the increased saturated water storage in Robinia pseudoacacia Linn.was the largest by 549.8 m3/hm2,followed by Acer mono Maxim.and Pistacia chinensis Bunge.,416.9 and 392.3 m3/hm2 respectively,and in conifers species such as Pinus thunbergii Parl.,Platycladus orientalis（Linn.） Franco were relatively not so much by 257.9 m3/hm2 and 223.7 m3/hm2 correspondingly.The correlation analysis between the amount of decomposed litter layer and 0-20 cm soil physical and chemical properties shows that： the amount of decomposed litter layer were extremely significant correlated with soil organic matter content and soil non-capillary porosity,significantly associated with soil bulk density and total soil porosity,but not significantly related to the soil capillary porosity.The soil water storage efficiency of the five different stands decreased in the order of Robinia pseudoacacia Linn.,Acer mono Maxim.,Pistacia chinensis Bunge.,Pinus thunbergii Parl.,Platycladus orientalis（Linn.）Franco.

关 键 词：林分类型 土壤饱和贮水量 土壤蓄水效益 山东砂石山区 

分 类 号：S141.4[农业科学—肥料学]