菌根及其在荒漠化土地恢复中的应用

对菌根的作用及其荒漠化对其影响，以及菌根在荒漠化土地恢复中的应用进行了探讨，指出菌根不仅能够促进植物个体养分的吸收，提高植物光合作用，增强植物抗旱、抗盐性，而且能够调节群落内植物间的关系、群落的演替轨道及其生物多样性、耕作、灌溉、过度放牧和开矿等诱发土地荒漠化过程的人类活动直接影响菌根的建立和生存，采用外来菌引入及原来残存菌培育，在恢复区建立丛状菌根植物，菌木化菌根造林及开矿土地管理中表土的存贮等方式都会有力地促进恢复地菌根的建立，并可缩短恢复周期。

Mycorrhizae and its application in desertification land restoration.

The roles of mycorrhizae and its response to the desertification,as well as its application in desertification land restoration were discussed in this paper.It is suggested that mycorrhizae can not only promote the nutrient absorption,improve photosynthesis rate,and enhance the drought and salinity resistance,but also can adjust to the relationship among plants,succession trajectories and biodiversity in community.Human activities including tillage,overgrazing,and mining can not only cause land desertification,but also impact negatively on the persistence and establishment of mycorrhizae.Introduction of exotic mycorrhizal fungi and culture of remnant of native,establishment of brush with mycorrhizae in clump,mycorrhizalization seedling in afforestation,and storage of surface soil should be carried out in order to speed up the desertification land restoration.