| 三北防护林生态效益评价要素分析 |
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| 引用本文： | 代力民,王宪礼,王金锡. 三北防护林生态效益评价要素分析[J]. 世界林业研究, 2000, 13(2): 47-51 |
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| 作者姓名： | 代力民 王宪礼 王金锡 |
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| 作者单位： | 1.中国科学院沈阳应用生态研究所, 沈阳110015; |
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| 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温度的调节作用;(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,防护林对土壤质地的改良作用,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 词： | 三北防护林 生态效益 评价 |
| 收稿时间： | 1998-11-12 |
| 修稿时间： | 1998-11-12 |
Indicators to Assess the Ecological Effect of the 3 North Windbread System |
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| Dai Limin,Wang Xianli and Wang Jinxi. Indicators to Assess the Ecological Effect of the 3 North Windbread System[J]. World Forestry Research, 2000, 13(2): 47-51 |
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| Authors: | Dai Limin Wang Xianli Wang Jinxi |
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| Affiliation: | 1.Institute of Applied Ecology, Academia Sinica, Shenyang 110015, China |
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| Abstract: | The eclolgical effects of 3-north (north,northeast and north west of China) windbreak system mainly are:(1) regional climate effect,including wind preventing,air moisture and temperature regulations.(2) Soil improvement effect,mainly including sand fixation,wind erosion reducing,soil structure improvement,and soil moisture regulation.(3) Iand productivity and crop production improvement.Concerning the above aspects,a series of indicators to assess the eclolgical effect of the 3-north windbreak system were introduced and analyzed. |
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