桉树复合经营模式的水土保持效益分析  

Study on benefits of soil and water conservationin Eucalypt plantations inter-cropped with different crops

作　　者：王会利[1,2,3] 蒋燚[1,2,3] 曹继钊[1,2,3] 曾辉 梁燕芳 吴海潮 刘德杰 

机构地区：[1]广西壮族自治区林业科学研究院,南宁530002 [2]国家林业局中南速生材繁育实验室,南宁530002 [3]广西优良用材林资源培育重点实验室,南宁530002 [4]广西国有七坡林场,南宁530225 [5]广西贵港平天山林场,广西贵港537112 [6]广西国有博白林场,广西博白537617

出　　处：《中国水土保持科学》2012年第4期104-107,共4页Science of Soil and Water Conservation

基　　金：广西科学研究与技术开发计划项目"桉树人工林复合经营模式优化筛选及效益评价"(08160-04);广西林科院基本科研业务费项目"桉树人工林水土流失监测与评价"(林科201011号);世界银行贷款广西综合林业发展和保护项目监测子项目"土壤侵蚀监测"(JC2)

摘　　要：运用径流场观测方法,对桉树-牧草、桉树-农作物和桉树-药材3种复合经营模式的地表径流量和土壤侵蚀量进行定位观测,筛选出水土保持效益好的复合经营模式,为桉树人工林的可持续经营提供参考依据。研究结果表明:桉树间作牧草、农作物和药材后,地表径流量分别降低了21.07%～31.02%、33.91%～38.71%和1.51%～67.12%;土壤侵蚀量受人为干扰影响较大,但种植2年后,桉树3种复合经营模式均未产生土壤侵蚀;桉树+木薯复合经营模式的地表径流量和土壤侵蚀量降幅最明显,初步认定桉树+木薯复合经营模式水土保持效益较好,是比较适宜的种植模式。In order to select the compound planting pattern with good soil and water conservation benefits and provide a reference to the sustainable development of Eucalypt plantations, the runoff and soil erosion amount of different planting patterns including Eucalyptus-grass, Eucalyptus-crop and Eucalyptus-herbal medicine were observed in standard runoff plots （20 m×5 m）. The results showed that ： compared with only Eucalyptus plantation, the runoff of other plantations, such as Eucalyptus-grass, Eucalyptus-crop and Eucalyptus-herbal medicine, decreased by 21.07% - 31.02% , 33.91% - 38.71% and 1.51% - 67.12% respectively; soil erosion was obviously affected by human activity in the early-period, but soil erosion was not found in plantation patterns of Eucalyptus-grass, Eucalyptus-crop and Eucalyptus-herbal medicine two years later. Compared with other compound planting patterns, the decrease rate of runoff and soil erosion amount of Eucalyptus-cassava planting pattern was the greatest. Therefore, the Eucalyptus-cassava plantation is considered as an appropriate compound planting pattern with good soil and water conservation benefit.

关 键 词：桉树 复合经营模式 径流量 侵蚀量 

分 类 号：S759.2[农业科学—森林经理学]