|
|||||
|
|
| 外生菌根真菌对科尔沁沙地樟子松人工林衰退的影响 | |
| 引用本文： | 朱教君,康宏樟,许美玲,吴祥云,王巍.外生菌根真菌对科尔沁沙地樟子松人工林衰退的影响[J].应用生态学报,2007,18(12):2693-2698. |
| 作者姓名： | 朱教君 康宏樟 许美玲 吴祥云 王巍 |
| 作者单位： | 1. 中国科学院沈阳应用生态研究所,沈阳,110016 2. 中国科学院沈阳应用生态研究所,沈阳,110016;上海交通大学农业与生物学院,上海,200240 3. 辽宁工程技术大学,辽宁阜新,123000 4. 辽宁省风沙地改良利用研究所,辽宁阜新,123000 |
| 基金项目： | 中国科学院"百人计划";国家自然科学基金;中国科学院知识创新工程项目 |
| 摘 要： | 通过对科尔沁沙地东南缘樟子松人工林气温、地温及樟子松人工林根系分布的观测，从温度对外生菌根菌存活与生长影响的角度分析了沙地樟子松人工林衰退的现象，结果表明：由于沙地表层土壤（0～5cm）高温环境，外生菌根菌无法存活；在沙地20～40cm土层内，温度条件有利于外生菌根菌的存活、生长，而13～42年生沙地樟子松人工林树木平均78％的根系分布于该层，说明外生菌根菌的存在阻止或延缓了樟子松人工林的生长衰退，不是导致沙地樟子松人工林枯叶、枯梢、枯枝、死亡的原因．表层土壤外生菌根菌的缺乏使萌发的幼苗不能形成有效根系是导致沙地樟子松人工林不能天然更新的主要原因之一． |
| 关 键 词： | 叶绿素a 初级生产力 分布 赤潮 东海 |
| 文章编号： | 1001-9332（2007）12-2693-06 |
| 收稿时间： | 2007-03-21 |
| 修稿时间： | 2007-09-19 |
Effects of ectomycorrhizal fungi on alleviating the decline of Pinus sylvestris var.mongolica plantations on Keerqin sandy land |
|
| ZHU Jiao-jun,KANG Hong-zhang,XU Mei-ling,WU Xiang-yun,WANG Wei.Effects of ectomycorrhizal fungi on alleviating the decline of Pinus sylvestris var.mongolica plantations on Keerqin sandy land[J].Chinese Journal of Applied Ecology,2007,18(12):2693-2698. | |
| Authors: | ZHU Jiao-jun KANG Hong-zhang XU Mei-ling WU Xiang-yun WANG Wei |
| Affiliation: | Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. jiaojunzhu@iae.ac.cn |
| Abstract: | Based on the observations of air temperature,soil temperature,and root systems of Pinus sylvestris var.mongolica plantations on southeastern Keerqin sandy land,the decline mechanisms of the plantations were analyzed from the aspect of the effects of temperature on the growth and survival of ectomycorrhizal fungi(ECM).The results indicated that ECM could hardly survive with in 0-5 cm soil layer because of its high temperature environment,but the temperature condition in 20-40 cm soil layer was suitable for the survival and growth of ECM.78% of the roots of 13-42 years old P.sylvestris var.mongolica tress were distributed in 20-40 cm soil layer,which suggested that the existence of ECM in this soil layer inhibited or alleviated the decline of the P.sylvestris var.mongolica plantations,and was not the inducing factor of the plantations' top withering,low growth rate,and tree death.The lack of ECM in surface soil layer(0-5 cm) could be one of the main reasons leading to the death of seedlings root systems,and thus,the failure of P.sylvestris var.mongolica plantations' regeneration. |
| Keywords: | sandy land Pinus sylvestris var mongolica decline temperature ectomycorrhizal fungous |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《应用生态学报》浏览原始摘要信息 | |
| 点击此处可从《应用生态学报》下载全文 | |
