摘要
研究了大田栽培和自然光条件下 ,模拟 UV-B辐射 ( UV-B,2 80～ 3 1 5nm)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。
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.
出处
《生态学报》
CAS
CSCD
北大核心
2001年第1期131-135,共5页
Acta Ecologica Sinica
基金
国家自然科学基金项目!( 3 9670 1 3 2
3 9760 0 2 1 )
