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当前位置: 首页 > 文章 > 亚热带杉木人工林下植物多样性对氮沉降的响应 水土保持通报 2014,34 (4) 87-90+98
Position: Home > Articles > Response of Understory Plant Diversity to Nitrogen Deposition in Subtropical Chinese Fir Plantation Forest Bulletin of Soil and Water Conservation 2014,34 (4) 87-90+98

亚热带杉木人工林下植物多样性对氮沉降的响应

作  者：
吴建平;刘文飞;袁颖红;黄荣珍;樊后保;廖迎春;林文龙
单  位：
南昌工程学院生态与环境科学研究所;福建沙县官庄国有林场
关键词：
氮沉降;生物多样性;杉木人工林;林下植物
摘  要：
基于野外长期控制试验,研究了氮沉降7a后人工杉木林下植物多样性的响应。试验处理分为N0〔(Control),0kg/(hm2·a)〕;N1〔60kg/(hm2·a)〕;N2〔120kg/(hm2·a)〕;N3〔240kg/(hm2·a)〕。林下植物中共发现51种植物,隶属34科,45属。随着氮沉降的增加,呈现出植物α多样性指数减少,而βws多样性指数增加的趋势,群落相似性指数明显降低。去趋势对应分析排序(detrended correspondence analysis,DCA)结果表明,氮沉降改变了植物群落结构。其中,菝葜和沿海紫金牛在4个处理中均有发现,为广适种。毛冬青、粗叶榕、毛花连蕊茶、毛枝连蕊茶、香附子这几种植物在N0—N2处理中有发现,属于较耐受种。茅莓、羊乳、羊角藤、琴叶榕、紫麻、杜虹花、乌蔹莓、海金莎均为一般耐受种,在N0和N1处理中有发现。另外,黄瑞木、黄樟等16种植物可能为敏感种,仅可在N0处理中发现。总之,亚热带森林植物多样性受到了氮沉降增加的不利影响,应针对某些濒危植物种类实施合理的保育措施。
译  名：
Response of Understory Plant Diversity to Nitrogen Deposition in Subtropical Chinese Fir Plantation Forest
作  者：
WU Jian-ping;LIU Wen-fei;YUAN Ying-hong;HUANG Rong-zhen;FAN Hou-bao;LIAO Ying-chun;LIN Wen-long;Institute of Ecology & Environmental Science,Nanchang Institute of Technology;Shaxian State Forest Farm of Fujian Province;
关键词：
nitrogen deposition;;biodiversity;;Chinese fir(Cunninghamia lanceolata)plantation forests;;understory plants
摘  要：
Based on the long-term field manipulation experiment,the response of understory plants to 7years of nitrogen deposition in a Chinese fir(Cunninghamia lanceolata)forest was investigated.The quantities of experimental N added and treatment codes were N0〔(Control);0kg/(hm2·a)〕;N1〔60kg/(hm2·a)〕;N2〔120kg/(hm2·a)〕;N3〔240kg/(hm2·a)〕.The result showed that the totally 51 species belong to 34 families,45generas.Along with the increase of nitrogen deposition,plant species,families and genera were all decreased.In addition,both Shannon—Weiner index and Simpson diversity index reduced,but Whittaker index increased with nitrogen deposition increase.Furthermore,Sorenson similarity index was decreased obviously.Detrended correspondence analysis(DCA)indicated that nitrogen deposition changed plant community composition.Plant species Smilax china and Ardisia punctata were found in the plots of four treatments,which would be the popular species.Plant species Ilex asprella,Ficus hirta,Camellia fraternal,Camellia trichocladaand Rhizoma cyperi were found in N0—N2plots,which would be the resistant species.While Rubusparvifolius,Codonopsis lanceolata,Morinda umbellate,Ficus lyrata,Oreocnide frutescens,Callicarpaformosana,Herba cayratica and Lygodium japonicum were found in N0 and N1plots,which would be less resistant species.Other 16 species such as Adinandra millettii and Cinnamomum parthenoxylon were only found in N0 plots,which would be the sensitive species.In conclusion,because plant diversity in the subtropical forest was negatively affected by nitrogen deposition,more attention should be paid to the plant conservation.

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