Morphologic evolution features of mosses in artificial sand-fixing vegetation in the Tengger Desert

doi:10.7522/j.issn.1000-694X.2023.00119

Journal of Desert Research ›› 2024, Vol. 44 ›› Issue (3): 298-307.DOI: 10.7522/j.issn.1000-694X.2023.00119

Morphologic evolution features of mosses in artificial sand-fixing vegetation in the Tengger Desert

Yuchen Wan¹^,³(), Yanping Liu¹, Yongsheng Wu⁴, Hongfei Jia¹, Tian Zhang¹, Yanhong Gao¹, Haotian Yang¹, Wanxue You⁵, Jun Du², Rongliang Jia¹()

^1.Shapotou Desert Research and Experiment Station /, Northwest Institute of Eco-Environment and Resources，Chinese Academy of Sciences，Lanzhou 730000，China
^2.Linze Inland River Basin Research Station, Northwest Institute of Eco-Environment and Resources，Chinese Academy of Sciences，Lanzhou 730000，China
^3.University of Chinese Academy of Sciences，Beijing 100049，China
^4.College of Geographical Science，Inner Mongolia Normal University，Hohhot 010000，China
^5.Ningxia Zhongwei Shapotou National Nature Reserve Administration，Zhongwei 755700，Ningxia，China

Received:2023-09-23 Revised:2023-12-29 Online:2024-05-20 Published:2024-06-11
Contact: Rongliang Jia

Abstract

Abstract:

Morphological evolution features can reflect the adaptive strategy of plants to environmental changes. To understand the morphological variations of mosses in adapting to arid sandy area environment， we select three moss species （Bryum argenteum，Didymodon vinealis and Syntrichia caninervis） in the artificial stabilized sand vegetation area on the southestern edge of the Tengger Desert. Using the method of “space replacing time”， we analyzed the morphological and quantitative characteristics of mosses at for levels： leaf， individual， population， and community， in different vegetation age zones （35， 41 and 66 years）. The result revealed certain differences in the morphological traits of the three moss species at the study levels as the vegetation age increased. Specifically， D. vinealis exhibiteda continuous decrease in leaf area， awns， and plant height， while S. caninervis and B. argenteum showed non-continuous variations. The patterns of variation may be to resource competition within and between species. Nevertheless， considering the overall morphological traits， mosses in the artificially stabilized sand vegetation area of the Tengger Desert generally undergo an evolutionary trend from smaller stem-leaf shoots with higher density to larger stem-leaf shoots with low density during the process of ecosystem restoration. This study provides insights into the morphological adaptation strategies of mosses during ecosystem restoration and serves as a scientific basis for species selection of mosses in ecosystem restoration.

Key words: mosses, morphological adaptation, vegetation succession, arid zone

CLC Number:

Q948.1

Yuchen Wan, Yanping Liu, Yongsheng Wu, Hongfei Jia, Tian Zhang, Yanhong Gao, Haotian Yang, Wanxue You, Jun Du, Rongliang Jia. Morphologic evolution features of mosses in artificial sand-fixing vegetation in the Tengger Desert[J]. Journal of Desert Research, 2024, 44(3): 298-307.

Figures/Tables 7

Table 1 The difference of stem and leaf structure among three species of mosses

藓种	茎叶体	茎	叶片	叶尖
真藓	密集丛生	茎直立且分支	叶片覆瓦状排列，干燥时黑色或褐色紧贴于茎，吸水后呈绿色，叶全缘	具透明短毛尖
土生对齿藓	密集丛生	茎直立且分支	叶片轮生，长舌状，干燥时黑色或褐色紧贴于茎，吸水后呈墨绿色或绿色一定角度展开呈“五角星”状，叶全缘	叶尖狭长
齿肋赤藓	密集从生	茎直立且分支	叶片莲座状集生，干燥时黑色或褐色紧贴于茎，吸水后叶片青色或绿色，呈莲座状展开，叶全缘	透明长毛尖且具齿

Fig.1 Leaf morphological variations of three mosses along succession of the artificial sand-fixing vegetation in Tengger Desert

Fig.2 Plant height and Density variations of three mosses along succession of artificial sand-fixing vegetation in Tengger Desert

Fig.3 Aboveground biomass of individual and population variations of three mosses along succession of artificial sand-fixing vegetation in Tengger Desert

Fig.4 Community indices variations of three mosses along succession of artificial sand-fixing vegetation in Tengger Desert

Fig.5 Spearman correlation analysis of relevant indexes of three mosses in different levels along succession artificial sand-fixing vegetation in Tengger Desert

Fig.6 Possible mechanism of morphology variations of the three mosses along the succession of artificial sand-building vegetation.

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Morphologic evolution features of mosses in artificial sand-fixing vegetation in the Tengger Desert

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