| 增强的UV-B辐射对麦田生态系统中种群数量动态的影响 |
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| 引用本文： | 李元,王勋陵.增强的UV-B辐射对麦田生态系统中种群数量动态的影响[J].生态学报,2001,21(1):131-135. |
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| 作者姓名： | 李元 王勋陵 |
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| 作者单位： | 1. 云南农业大学环境科学系,
2. 兰州大学生物系, |
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| 基金项目： | 国家自然科学基金项目(39670132、39760021) |
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| 摘 要： | 研究了大田栽培和自然光条件下，模拟UV-B辐射(UV-B，280～315nm)增强对麦田生态系统杂草、大型土壤动物和麦蚜种群数量动态的影响。在UV-B辐射下，杂草和大型土壤动物的种类和数量降低，物种多样性改变，杂草总生物量也降低。UV-B辐射降低麦蚜复合种群数量，并与麦叶粗纤维、可溶性蛋白、可溶性糖、Mg和Zn含量有显著的相关性。UV-B辐射还导致麦蚜与麦叶Mg、Fe和Zn含量均显著增加。
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| 关 键 词： | UV-B辐射 麦田生态系统 杂草 大型土壤动物 麦蚜 |
| 文章编号： | 1000-0933(2001)01-0131-05 |
| 收稿时间： | 1998/12/3 0:00:00 |
| 修稿时间： | 1998年12月3日 |
Effects of enhanced UV-B radiation on population quantity dynamics of weeds,soil macroanimals and wheat aphids in the wheat field ecosystem |
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| LI Yuan and WANG Xunling.Effects of enhanced UV-B radiation on population quantity dynamics of weeds,soil macroanimals and wheat aphids in the wheat field ecosystem[J].Acta Ecologica Sinica,2001,21(1):131-135. |
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| Authors: | LI Yuan and WANG Xunling |
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| Institution: | Dept.of Environmental Science; Yunnan Agricultural University; Kunming; China |
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| Abstract: | Influences of enhanced ultraviolet radiation(UV-B,280～315nm)on population quantity dynamics of weeds,soil macroanimals and wheat aphids in the wheat field ecosystem were investigated,Under UV-B radiation,species number and population quantity of weeds and soil macroanimals decreased,species diversity changed,total biomass of weeds reduced.UV-B radiation decreased population quantity of wheat aphids,which were significantly correlated with HCel,soluble protein content,CHO and the concentrations of Mg and Zn in wheat leaves.UV-B radiation resulted in significant increase of the concentrations of Mg,Fe and Zn in wheat aphids and wheat leaves. |
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| Keywords: | UV B radiation wheat field ecosystem weeds soil macroanimals wheat aphids |
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