【作者】 罗跃初； 吴钢；

【Author】 Luo Yuechu;Wu Gang;China Institute of Geo-Environment Monitoring;Key Laboratory of System Ecology,Research Center for Eco-environmental Sciences,CAS;

【机构】 中国地质环境监测院； 中国科学院生态环境研究中心系统生态重点实验室；

【摘要】 本文选取辽西半干旱区5种有代表性的人工林生态系统作为研究对象,探讨了不同人工林生态系统的水土保持功能及其经济价值。结果表明,与荒坡对照相比,各人工林生态系统均能显著地减少地表径流量、土壤侵蚀量及养分输出量;在5种人工林生态系统中,沙棘林的水土保持功能最好,混交林比杨树纯林和油松纯林有更好的水土保持功能;各人工林生态系统水土保持服务的经济价值为沙棘林最大,为845.44元·hm^-2·a^-1,其后依次为杨树沙棘混交林(797.49元·hm^-2·a^-1)、油松沙棘混交林(787.49元·hm^-2·a^-1)、杨树纯林(736.11元·hm^-2·a^-1)和油松纯林(708.84元·hm^-2·a^-1)。更多还原

【Abstract】 Five typical planted ecosystems in semiarid region of western Liaoning Province were selected to test their soil and water conservation services and valuate their economic value.Compared with the control（badlands）,all selected planted forest ecosystems could significantly decrease surface runoff,soil erosion and output of nutrients.Among the five planted forest ecosystems,H.rhamnoides forest ecosystem had the best soil and water conservation capacity,and the mixed forest ecosystems had a better soil water conservation capacity than P.tabulaeformis forest ecosystem and P.simonii forest ecosystem.The economic value of soil and water conservation services of different planted forest ecosystems varied from 708.84 yuan · hm^-2·a^-1 to 845.44 yuan·hm^-2·a^-1,and the order was H.rhamnoides forest ecosystem> P.simonii-H.rhamnoides mixed forest ecosystem> P.tabulaeformis-H.rhamnoides mixed forest ecosystem> P.simonii forest ecosystem> P.tabulaeformis forest ecosystem.更多还原