| 亚热带杉木人工林下植物多样性对氮沉降的响应 |
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| 引用本文： | 吴建平,刘文飞,袁颖红,黄荣珍,樊后保,廖迎春,林文龙.亚热带杉木人工林下植物多样性对氮沉降的响应[J].水土保持通报,2014(4):87-90,98. |
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| 作者姓名： | 吴建平 刘文飞 袁颖红 黄荣珍 樊后保 廖迎春 林文龙 |
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| 作者单位： | 南昌工程学院生态与环境科学研究所, 江西南昌 330099;南昌工程学院生态与环境科学研究所, 江西南昌 330099;南昌工程学院生态与环境科学研究所, 江西南昌 330099;南昌工程学院生态与环境科学研究所, 江西南昌 330099;南昌工程学院生态与环境科学研究所, 江西南昌 330099;南昌工程学院生态与环境科学研究所, 江西南昌 330099;福建沙县官庄国有林场, 福建沙县 365504 |
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| 基金项目： | 国家自然科学基金项目"杉木林下植物-土壤微生物功能群相互关系对氮沉降的响应与适应"(31200406); 江西省自然科学基金项目(20122BAB204021); 江西省教育厅科技计划项目(KJLD12097; GJJ14744) |
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| 摘 要： | 基于野外长期控制试验,研究了氮沉降7 a后人工杉木林下植物多样性的响应。试验处理分为N0(Control),0 kg/(hm2·a)];N160 kg/(hm2·a)];N2120 kg/(hm2·a)];N3240 kg/(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。
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| 关 键 词： | 氮沉降 生物多样性 杉木人工林 林下植物 |
| 收稿时间： | 2013/9/18 0:00:00 |
| 修稿时间： | 2013/9/23 0:00:00 |
Response of Understory Plant Diversity to Nitrogen Deposition in Subtropical Chinese Fir Plantation Forest |
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| WU Jian-ping,LIU Wen-fei,YUAN Ying-hong,HUANG Rong-zhen,FAN Hou-bao,LIAO Ying-chun and LIN Wen-long.Response of Understory Plant Diversity to Nitrogen Deposition in Subtropical Chinese Fir Plantation Forest[J].Bulletin of Soil and Water Conservation,2014(4):87-90,98. |
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| Authors: | WU Jian-ping LIU Wen-fei YUAN Ying-hong HUANG Rong-zhen FAN Hou-bao LIAO Ying-chun and LIN Wen-long |
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| Institution: | Institute of Ecology & Environmental Science, Nanchang Institute of Technology, Nanchang, Jiangxi 330099, China;Institute of Ecology & Environmental Science, Nanchang Institute of Technology, Nanchang, Jiangxi 330099, China;Institute of Ecology & Environmental Science, Nanchang Institute of Technology, Nanchang, Jiangxi 330099, China;Institute of Ecology & Environmental Science, Nanchang Institute of Technology, Nanchang, Jiangxi 330099, China;Institute of Ecology & Environmental Science, Nanchang Institute of Technology, Nanchang, Jiangxi 330099, China;Institute of Ecology & Environmental Science, Nanchang Institute of Technology, Nanchang, Jiangxi 330099, China;Shaxian State Forest Farm of Fujian Province, Shaxian, Fujian 365504, China |
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| Abstract: | Based on the long-term field manipulation experiment, the response of understory plants to 7 years of nitrogen deposition in a Chinese fir(Cunninghamia lanceolata) forest was investigated. The quantities of experimental N added and treatment codes were N0(Control); 0 kg/(hm2·a)]; N160 kg/(hm2·a)]; N2120 kg/(hm2·a)]; N3240 kg/(hm2·a)]. The result showed that the totally 51 species belong to 34 families, 45 generas. 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 trichoclada and Rhizoma cyperi were found in N0-N2 plots, which would be the resistant species. While Rubus parvifolius, Codonopsis lanceolata, Morinda umbellate, Ficus lyrata, Oreocnide frutescens, Callicarpa formosana, Herba cayratica and Lygodium japonicum were found in N0 and N1 plots, 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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| Keywords: | nitrogen deposition biodiversity Chinese fir(Cunninghamia lanceolata) plantation forests understory plants |
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