丛枝菌根真菌对石漠化地区造林苗木生长的影响

生态学杂志

丛枝菌根真菌对石漠化地区造林苗木生长的影响

张中峰^1*,张金池^2*,周龙武¹,徐广平¹,李艳琼¹

（¹广西喀斯特植物保育与恢复生态学重点实验室，广西壮族自治区中国科学院广西植物研究所，广西桂林 541006；²江苏省水土保持与生态修复重点实验室，南京林业大学林学院，南京 210037）

出版日期:2018-10-10 发布日期:2018-10-10

Effects of arbuscular mycorrhizal fungi on the growth of afforestation seedlings in a rocky desertification area.

ZHANG Zhong-feng^1*, ZHANG Jin-chi^2*, ZHOU Long-wu¹, XU Guang-ping¹, LI Yan-qiong¹

(¹Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuangzu Autonomous Region and Chinese Academy of Sciences, Guilin 541006, Guangxi, China; ²Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, College of Forestry, Nanjing Forestry University, Nanjing 210037, China).

Online:2018-10-10 Published:2018-10-10

摘要/Abstract

摘要： 西南石漠化地区生态环境脆弱，地表土壤贫瘠干旱，植被退化严重且恢复困难，当地造林苗木成活率低，抗逆性差。为提高石漠化地区造林苗木的成活率和生长，利用丛枝菌根真菌地表球囊霉（Glomus versiforme）和根内球囊霉（Rhizophagus intraradices）混合菌剂接种茶条木（Delavaya toxocarpa）、降香黄檀（Dalbergia odorifera）、香椿（Toona sinensis）、喜树（Camptotheca acuminata）和任豆（Zenia insignis）培育菌根苗，然后移栽于石漠化荒坡地，研究丛枝菌根真菌对造林苗木成活率和生长的影响。结果表明：苗木移栽一年后，5种苗木接菌处理菌根侵染率为48.5%～69.5%，均高于对照苗木；菌根苗木成活率比未接菌处理增加8.9%～14.9%，保存率比对照增加11.5%～22.6%；接菌处理株高比对照增加14.4%～44.6%，基径比对照增加7.6%～31.7%；接种丛枝菌根真菌促进了苗木养分吸收，接种植株磷含量显著高于未接种处理；接种苗木生物量显著高于未接种处理，5个树种中，香椿苗木菌根依赖性最高，达到26.0%，任豆苗木最低，为9.1%；菌根苗在石漠化生境下的成活率和生长速度高于非菌根苗，表明菌根苗木在石漠化地区植被修复中具有较好的应用前景。

关键词: 功能多样性, 功能特征, 闽江口, 渔业资源

Abstract: The rocky desertification ecosystem in Southwest China is characterized by ecologically fragile environment, in that the surface soil is poor and dry, vegetation degradation is severe, and vegetation recovery is difficult. The survival rate of local afforestation seedlings is low, with poor resistance for stresses. To improve the survival rate and growth of afforestation seedlings, we used mixed mycorrhizal inoculum of Glomus versiforme and Rhizophagus intraradices to inoculate Delavaya toxocarpa, Dalbergia odorifera, Toona sinensis, Camptotheca acuminata, and Zenia insignis and cultivated mycorrhizal seedlings. A transplanting afforestation experiment was conducted in the rocky desertification land by using the mycorrhizal inoculated seedlings. The effects of arbuscular mycorrhizal fungi inoculation on the survival rate and growth of afforestation seedlings under field conditions were investigated. The mycorrhizal infection rates of the inoculated seedlings of five species ranged from 48.5% to 69.5% after one year transplantation, being higher than that of the uninoculated ones. The survival rate, preservation rate, plant height, and base diameter of the five inoculated species increased by 8.9%-14.9%, 11.5%-22.6%, 14.4%-44.6%, and 7.6%-31.7%, respectively, compared with the uninoculated plants. The inoculation of mycorrhizal fungi promoted nutrient absorption of the seedlings. In particular, the phosphorus content in the inoculated treatments was significantly higher than that of the uninoculated ones. Furthermore, the biomass of the inoculated seedlings was significantly higher than that of the uninoculated ones. Among the five species, mycorrhizal dependence was the highest for T. sinensis (up to 26.0%) and the lowest for Z. insignis (9.1%). These results suggested that the inoculation of arbuscular mycorrhizal fungi could promote the growth of afforestation seedlings and increase their survival rate under field conditions; this method has good potential for application in vegetation restoration in rocky desertification areas.

Key words: fisheries, functional trait, Minjiang Estuary, functional diversity

张中峰,张金池,周龙武,徐广平,李艳琼. 丛枝菌根真菌对石漠化地区造林苗木生长的影响[J]. 生态学杂志.

ZHANG Zhong-feng, ZHANG Jin-chi, ZHOU Long-wu, XU Guang-ping, LI Yan-qiong. Effects of arbuscular mycorrhizal fungi on the growth of afforestation seedlings in a rocky desertification area.[J]. cje.

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