生态环境学报
生態環境學報
생태배경학보
ECOLOGY AND ENVIRONMENT
2013年
7期
1193-1198
,共6页
光污染%夜晚光照%灌木%城市%叶绿体超微结构%叶面积
光汙染%夜晚光照%灌木%城市%葉綠體超微結構%葉麵積
광오염%야만광조%관목%성시%협록체초미결구%협면적
light pollution%night light%shrubs%urban area%chloroplast ultrastructure%leaf area
大量的研究已经表明夜晚人工光照对人类和动物的生活存在负面的影响。但是很少有文献涉及全球不断增强的夜晚人工光照对植物的影响。研究假设不断增强的城市夜晚人工光照将影响行道树的生长，实验模拟行道树受到的城市夜晚人工弱光照射环境（1和10μmol·m-2·s-1），对6种常用行道树在对照和夜晚光处理条件下的生长，生物量分配，叶片形态，叶绿体超微结构等进行比较研究。研究结果表明，城市夜晚人工光照显著影响城市6种灌木的生长，不同种类的植物对夜晚光照的影响存在一定的差异。总体上，夜晚光照使大部分植物种类的叶面积和叶片生物量增加，但是叶片叶绿体受到破坏。在6种实验植物中，假连翘Duranta repens Linn.比其它5种灌木更能适应城市夜晚道路的光照环境。通过实验研究，我们建议对光敏感性高的灌木应该尽量避免种植在高强度光照的环境。实验结果为了解城市道路光照对行道树生长的影响以及城市行道树的管理提供了一个重要的参考。
大量的研究已經錶明夜晚人工光照對人類和動物的生活存在負麵的影響。但是很少有文獻涉及全毬不斷增彊的夜晚人工光照對植物的影響。研究假設不斷增彊的城市夜晚人工光照將影響行道樹的生長，實驗模擬行道樹受到的城市夜晚人工弱光照射環境（1和10μmol·m-2·s-1），對6種常用行道樹在對照和夜晚光處理條件下的生長，生物量分配，葉片形態，葉綠體超微結構等進行比較研究。研究結果錶明，城市夜晚人工光照顯著影響城市6種灌木的生長，不同種類的植物對夜晚光照的影響存在一定的差異。總體上，夜晚光照使大部分植物種類的葉麵積和葉片生物量增加，但是葉片葉綠體受到破壞。在6種實驗植物中，假連翹Duranta repens Linn.比其它5種灌木更能適應城市夜晚道路的光照環境。通過實驗研究，我們建議對光敏感性高的灌木應該儘量避免種植在高彊度光照的環境。實驗結果為瞭解城市道路光照對行道樹生長的影響以及城市行道樹的管理提供瞭一箇重要的參攷。
대량적연구이경표명야만인공광조대인류화동물적생활존재부면적영향。단시흔소유문헌섭급전구불단증강적야만인공광조대식물적영향。연구가설불단증강적성시야만인공광조장영향행도수적생장，실험모의행도수수도적성시야만인공약광조사배경（1화10μmol·m-2·s-1），대6충상용행도수재대조화야만광처리조건하적생장，생물량분배，협편형태，협록체초미결구등진행비교연구。연구결과표명，성시야만인공광조현저영향성시6충관목적생장，불동충류적식물대야만광조적영향존재일정적차이。총체상，야만광조사대부분식물충류적협면적화협편생물량증가，단시협편협록체수도파배。재6충실험식물중，가련교Duranta repens Linn.비기타5충관목경능괄응성시야만도로적광조배경。통과실험연구，아문건의대광민감성고적관목응해진량피면충식재고강도광조적배경。실험결과위료해성시도로광조대행도수생장적영향이급성시행도수적관리제공료일개중요적삼고。
Numerous studies have been reported that night light has negative effects on daily human life and animals. Limited information exists, however, concerning the effects of potentially increasing global night light intensity on plants. We hypothesized that the constant increase of the night light intensity in urban area may have substantial effects on the growth of street plants. In the present study, 6 commonly used street shrubs in Guangzhou, south China were be selected to treat with 2 supplemental night light intensities (1 and 10 μmol·m-2·s-1), and the effects of modeled night street light on plant growth and leaf morphology were investigated. The results showed that night light significantly impacted six shrubs, and the responses of the tested parameters somewhat differed from six species. In general, night light caused an increase in leaf area and leaf biomass, but damaged the leaf chloroplast ultrastructure of most species. Among the six shrubs, Duranta repens Linn. might adapt to the urban street light better than other 5 species in Guangzhou. We suggested that highly sensitive trees should be avoided in areas where high intensity lighting is used. Our data provide a key starting point toward a better understanding to the effects of street lighting on the growth and suitable management of avenue shrubs in urban area.
