| 防护林网内玉米田生物量和生产力格局的研究 |
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| 引用本文： | 常杰,王文章.防护林网内玉米田生物量和生产力格局的研究[J].植物生态学报,1992,16(2):126-135. |
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| 作者姓名： | 常杰 王文章 |
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| 作者单位： | 杭州大学生物系,东北林业大学 杭州 310012,哈尔滨 150040 |
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| 基金项目： | 国家“七、五”攻关课题的一部分 |
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| 摘 要： | 本文报道了松嫩平原防护林网内玉米(Zea mays)田的生物量和生物生产力的时空格局及其与生态、生理因子的关系。研究结果表明：林网东西两条主林带间不同位置玉米的生物量和生产力在生长季各时期均有显著差异。生物量在距西侧主林带5—10倍树高(H)处最高,距离为1树高处最低,25倍树高处亦较高。在大部分时间里生产力的水平格局为“N”形。两个峰分别为10H和25H。南北两条副林带间的生物量和生产力无明显差异。林网内生物量和生产力的分布格局受林网内温、湿因子分布的制约,不同时期的限制因子不同。叶面积和同化速率对生产力格局也有重要影响。林网内玉米穗生物量明显高于无林地。本研究指出,应适当缩短主林带间距,并可在林带附近种植浅根、矮秆和耐荫性作物,以提高整个林网的生产力和经济效益。
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| 关 键 词： | 防护林网 玉米田 生物量 生物生产力 格 |
A STUDY ON THE PATTERNS OF BIOMASS AND PRODUCTIVITY OF THE CORN CROPLAND IN SHELTERBELT NETWORK |
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| Chang Jie.A STUDY ON THE PATTERNS OF BIOMASS AND PRODUCTIVITY OF THE CORN CROPLAND IN SHELTERBELT NETWORK[J].Acta Phytoecologica Sinica,1992,16(2):126-135. |
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| Authors: | Chang Jie |
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| Abstract: | The time and space patterns of the biomass and biological productivity of corn(Zea mays) cropland in the shelterbelt network in SongNen plain and the relationship among the patterns, ecological and physiological factors in network were studied. Results showed that: The biomass and productivity in different position between the east and west belts had significient differences in each peroid in the growing season. The maximum biomass occured in 5—10 multiples of tree height(H), minimum in IH, and the biomass was also high in 25H. The level distribution of the productivity was "N" shape in most time of the growing season, two peaks occured in 10H and 25H respectively. The biomass and productivity between the south and north be Its had no difference. The patterns of the biomass and productivity in shelterbely network were restricted by the distribution of temperature and humidity in the network, and the restrict factor was different in different time. The leaf area and assimilate rate also had important effect on the pattern of productivity. The biomass of ear within network was higher than that in the open land. |
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| Keywords: | Shelterbelt network Corn(Zea mays)cropland Biomass Biological productivity Pattern |
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