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深丘区防护林体系营建前后生态效益的初步研究

A Preliminary study of the Ecologic Benefit of theProtection Forest System in Hilly Land

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【作者】 雷孝章王心清黄礼隆

【Author】 Lie Xiaozhang; Wang Xinqin; Huang Lilong(Sichuan Research Institute of Forestry)

【机构】 四川省林业科学研究院

【摘要】 通过对深丘区环境背景特征的研究,探讨了建设防护林体系的重要性.根据防护林体系的配置和观测体系的布置,以流域为单元、分层研究了防护林体系的综合效益。研究表明:营建后的防护林体系,可使坡面径流减少62%,径流含沙量减少69%,流域的年径流量和产沙量均有显著变化,森林覆被率每增加1%,年径流探减少4.2mm,泥沙减少3.7%,但枯季径流略有增加。

【Abstract】 Based on studies of evironmental features in hilly land,a discussion is made on the importance of building a protection forest system. Taking a water catchment as a unit,research is madeon the Comprehensive benefits of the protection forest system according to its arrangements. The resultshave shown that the slope runoff and the Sediment concentration of runoff can respectively decrease by 62 % and 69 % after the construction of a protection forest system. In addition,annual runoff volume and sediment yield in the water catchment have an evident change. Along with an increase of 1 % for each time in forest coverage,annual runoff depth and sediment will respectively decrease by 4. 1 mm and 3. 7%,but the runoff in the dry season will increase a little.

【关键词】 深丘区防护林体系
【Key words】 Hilly landProtection forest systemEcologic benefit
  • 【文献出处】 四川林业科技 ,JOURNAL OF SICHUAN FORESTRY SCIENCE AND TECHNOLOGY , 编辑部邮箱 ,1996年02期
  • 【分类号】S727.205
  • 【被引频次】13
  • 【下载频次】50
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