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研究报告目录 |
三北防护林生态效益评价要素分析 |
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| 出 版 社：世界林业研究 |
| 发表时间：2000,13(2):47～51 |
| 台 站：
长白山森林生态系统定位研究站
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| 作 者：代力民，王宪礼等 |
| 点 击 率：10860 |
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| 关 键 字：词 三北防护林 生态效益 评价指标 |
摘 要：三北防护林体系的生态效益主要包括：（1）防护林的区域气候效益，主要有防护林的防风效益，防护林对大气水分和空气湿度的调节作用；（2）防护林的土壤改良效益，包括防护林的固沙和降低风蚀作用，防护林对土壤水分平衡的影响等；（3）防护林在提高土地生产力与提高农业生产方面的效益等。文中针对以上问题，对三北防护林体系的生态效益评价指标进行了分析和介绍.
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关 键 字(英文)：3-north windbreak system , ecological effect, indicators to assess
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| 摘 要(英文)：The ecological effects of 3-north(north, northeast and northwest of China) windbreak system mainly are (1)regional climate effect,including wind preventing,air moisture and temperature regulations.(2)Soil improvement effect,mainly including sandfixation,wind erosion reducing,soil structure improvement,and soil moisture regulation.(3)land productivity and crop production improvement.Concerning the above aspects,a series of indicators to assess the ecological effect of the 3-north windbreak system were introduced and analyzed |
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