Contribution of actinorhizal plants to tropical soil productivity and rehabilitation
Contribution of actinorhizal plants to tropical soil productivity and rehabilitation
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DOI：
10.1016/s0038-0717(96)00227-1
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发表时间：
1997-05-01
影响因子：
9.7
通讯作者：
Dommergues, YR
中科院分区：
文献类型：
--
作者：
Dommergues, YR
放线根植物对土壤生产力和恢复的贡献不仅取决于许多非固氮树木的特性，还取决于随后转移到土壤并最终转移到相关作物的固定 N-2 的输入。许多放线菌植物（如木麻黄和桤木）的固氮潜力很高，但田间实际固定的 N-2 量往往较低，因为这种潜力的发挥受到不利的环境条件或不当管理措施的限制。评估转移到土壤中的固定 N-2 的量很困难，主要是因为固定 N-2 的循环利用（开放生态系统除外）。给出了许多将放线菌植物成功引入各种土地管理系统的例子。为了增加生态系统固定N-2的输入，可以采取两种策略：一是采取适当的管理措施；二是采取适当的管理措施。二是提高N-2固定系统的性能。实际上，除了优化放线菌固定之外；建议在一些尚未使用放线菌植物作为土壤改良剂的国家推广引进放线菌植物，驯化迄今被忽视或忽视的放线菌植物，并利用其能力促进废弃土地的恢复，并可能有助于污染场地的植物修复。 (C) 1997 爱思唯尔科学有限公司。
The contribution of actinorhizal plants to soil productivity and rehabilitation depends not only on properties encountered in a number of non-NZ-fixing trees but also on the input of fixed N-2 that is subsequently transferred to soil and ultimately to associated crops. The nitrogen-fixing potential of a number of actinorhizal plants (e.g. Casuarina sp. and Alnus sp.) is high but the amount of N-2 actually fixed in the field is often low because the expression of this potential is limited by unfavorable environmental conditions or improper management practices. Assessing the amount of fixed N-2 transferred to soil is difficult mainly because of the recycling of fixed N-2 except in open ecosystems. Many examples of successful introductions of actinorhizal plants into various systems of land management are given. To increase the input of fixed N-2 into ecosystems two strategies can be adopted: the first one is to use proper management practices; the second one is to improve the performances of the N-2-fixing system. Practically, in addition to optimizing actinorhizal fixation; it is recommended to develop the introduction of actinorhizal plants as soil improvers in a number of countries where they are not yet used, to domesticate hitherto neglected or overlooked actinorhizal plants, and to exploit their ability to contribute to the rehabilitation of wasted lands and possibly to the phytoremediation of polluted sites. (C) 1997 Elsevier Science Ltd.