植物地上部分对大气CO2浓度升高的响应

被引:15
作者
马红亮
朱建国
谢祖彬
机构
[1] 中国科学院南京土壤研究所
关键词
二氧化碳浓度升高; 光合作用; 呼吸作用; 环境条件; 植物群落;
D O I
暂无
中图分类号
X173 [环境植物学];
学科分类号
摘要
大气CO2浓度升高对植物的影响,主要是促进了植物生长早期的光合作用,同时也增加了对其他资源的需求;植物的光合作用也存在对高CO2浓度的适应,不会一直维持较高的光合水平,而且植物的呼吸作用也可能会增加;大气CO2浓度升高和其他环境条件,如水分,温度和光照等对植物生长和产量存在相互作用,可以部分弥补条件的不足,也影响作物和杂草的竞争关系;自然植物群落由于有很高的多样性和复杂性,对其研究应该在生物群落水平上进行,用外推法回到植物水平,而不是相反,而且自然物种间的竞争是激烈的,CO2浓度升高或其他因素带来的任何改善,都会明显地改变竞争平衡。
引用
收藏
页码:390 / 393
页数:4
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