| 不同树种结构对农田防护林效益的影响机制 |
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| 引用本文： | 周志强,张双,刘彤.不同树种结构对农田防护林效益的影响机制[J].东北林业大学学报,2009,37(10). |
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| 作者姓名： | 周志强 张双 刘彤 |
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| 作者单位： | 森林植物生态学教育部重点实验室(东北林业大学),哈尔滨,150040 |
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| 基金项目： | 黑龙江省科技攻关计划项目 |
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| 摘 要： | 研究了在小黑杨、落叶松、樟子松防护林带防护范围内,玉米、大豆、向日葵的光合指标及土壤水分.结果表明:对各作物种植区土壤水分的影响,杨树林带最大,樟子松次之,落叶松最小.杨树林带胁地范围1.6H(杨树平均树高H的1.6倍)内,大豆光合指标最优,玉米最弱.1.6H外,向日葵光合指标最优,大豆最弱;落叶松林带胁地范围0.8H(落叶松平均树高H的0.8倍)内,玉米光合指标最优.0.8H外,3种作物的光合指标近似;樟子松林带胁地范围0.8H(樟子松平均树高H的0.8倍)内,3种农作物的光合指标近似.0.8H外,玉米光合指标最优,大豆最弱.对玉米净光合速率的影响,杨树林带最大,落叶松最小;对向日葵的光合的影响,杨树最大,樟子松最小;3种树种对大豆的净光合速率的影响基本相同.
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| 关 键 词： | 农田防护林 光合作用 树种 土壤水分 |
Difference in Protective Effects of Farmland Shelterbelts with Different Structures of Tree Species |
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| Zhou Zhiqiang,Zhang Shuang,Liu Tong.Difference in Protective Effects of Farmland Shelterbelts with Different Structures of Tree Species[J].Journal of Northeast Forestry University,2009,37(10). |
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| Authors: | Zhou Zhiqiang Zhang Shuang Liu Tong |
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| Institution: | Zhou Zhiqiang,Zhang Shuang,Liu Tong(College of Forestry,Northeast Forestry University,Harbin 150040,P. R. China) |
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| Abstract: | The photosynthetic indexes of corn,soybean,and sunflower as well as soil absolute moisture content were determined and analyzed by selecting croplands within the protected range of farmland shelterbelts of poplar,larch,and Scotch pine. Poplar shelterbelt had the most obvious effect on soil moisture,and then followed by Scotch pine shelterbelt and larch shelterbelt in order. The photosynthetic indexes of soybean were the best and those of corn were the worst when the cropland was within 1.6 times of poplar h... |
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| Keywords: | Farmland shelterbelts Photosynthesis Tree species Soil moisture |
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