土壤基质,湿度及接种量对荒漠藻结皮形成的影响

doi:10.7522/j.issn.1000-694X.2013.00417

摘要/Abstract

摘要：

荒漠藻结皮作为一种生物结皮,在防风固沙方面起着重要的作用.具鞘微鞘藻(Microcoleus vaginatus)作为荒漠藻结皮的优势物种,人工接种后能加快荒漠藻结皮的形成.本试验通过研究模拟生态环境下不同因子对荒漠藻结皮形成的影响,寻找荒漠藻结皮形成的最优生态条件.结果表明:在快速形成荒漠藻结皮的过程中,荒漠藻生物量变化趋势相同,并且随着接种量和土样含水量的减小而依次降低.通过对不同区域土样上荒漠藻生物量的测定发现,柴草方格沙障区土样中荒漠藻生物量最高.因此,荒漠藻结皮形成的最优生态条件是接种量(以叶绿素a含量计)为10 μg·cm^-2,土样含水量为10%,土样类型为柴草方格沙障土样.

关键词: 荒漠, 藻结皮, 土样类型, 土样含水量

Abstract:

As a kind of biological crust, the desert algae crust plays an important role in the desertification control. The cultivation of Microcoleus vaginatus can accelerate the formation of desert algae crust. We investigated the effect of different factors on the formation of algae crust under simulated ecological environment to find the optimal ecological condition. Our results showed that: in the rapid process of the formation of algae crust, the algae crust changed similarly, and the algae reduced with the decrease of inoculum concentration and soil moisture content. Research on desert algae crust in the soil samples from different areas showed that the desert algae crust in the straw squares soil sample was the highest. In a word, our results showed that the optimal ecological conditions for the formation of algae crust are as follows: the Chla inoculum size of 10 μg·cm^-2, the soil moisture content of 10% and the soil type straw squares.

Key words: desert, algae crust, soil type, soil moisture

中图分类号:

S154.4

黄文福, 刘左军, 单夕文, 张雅涵, 王强. 土壤基质,湿度及接种量对荒漠藻结皮形成的影响[J]. 中国沙漠, 2014, 34(6): 1503-1508.

Huang Wenfu, Liu Zuojun, Shan Xiwen, Zhang Yahan, Wang Qiang. Effects of Inoculum Contentration,Moisture and Substrate on the Formation of Desert Algae Crust[J]. JOURNAL OF DESERT RESEARCH, 2014, 34(6): 1503-1508.

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