Responses of Plant Bud Bank Characteristics to the Enclosure in Different Desertified Grasslands on the Tibetan Plateau
Asexual reproduction is the main mode of alpine plant reproduction, and buds play an important role in plant community succession. The purpose of this study is to explore whether the desertified grassland can recover itself through the existing bud bank. The bud bank composition, distribution and si...
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MDPI AG
2021-01-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/10/1/141 |
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| author | Xinjing Ding Peixi Su Zijuan Zhou Rui Shi Jianping Yang |
| author_facet | Xinjing Ding Peixi Su Zijuan Zhou Rui Shi Jianping Yang |
| author_sort | Xinjing Ding |
| collection | DOAJ |
| description | Asexual reproduction is the main mode of alpine plant reproduction, and buds play an important role in plant community succession. The purpose of this study is to explore whether the desertified grassland can recover itself through the existing bud bank. The bud bank composition, distribution and size of different desertified grasslands were studied using unit volume excavation on the Tibetan Plateau. The bud bank consisted of tiller, long and short rhizome buds, and more than 40% of buds were distributed in the 0–10 cm soil layer. Enclosure changed the bud density, distribution and composition. The bud densities were 4327 and 2681 No./m<sup>2</sup> in light and middle desertified grasslands before enclosure, while that decreased to 3833 and 2567 No./m<sup>2</sup> after enclosure. Tiller bud density and proportion of middle desertified grassland were the highest, increased from 2765 (31.26%, before enclosure) to 5556 No./m<sup>3</sup> (62.67%, after enclosure). There were new grasses growing out in the extreme desertified grassland after enclosure. The meristem limitation index of moderate desertified grassland was the lowest (0.37), indicating that plant renewal was limited by bud bank. Plants constantly adjust the bud bank composition, distribution, and asexual reproduction strategy, and desertified grasslands can recover naturally, relying on their bud banks through an enclosure. |
| first_indexed | 2024-03-09T05:07:21Z |
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| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-09T05:07:21Z |
| publishDate | 2021-01-01 |
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| spelling | doaj.art-c925f989d483446fbe0cd6efaa7ec1fd2023-12-03T12:53:26ZengMDPI AGPlants2223-77472021-01-0110114110.3390/plants10010141Responses of Plant Bud Bank Characteristics to the Enclosure in Different Desertified Grasslands on the Tibetan PlateauXinjing Ding0Peixi Su1Zijuan Zhou2Rui Shi3Jianping Yang4Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, 320, Donggang West Road, Lanzhou 730000, ChinaKey Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, 320, Donggang West Road, Lanzhou 730000, ChinaKey Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, 320, Donggang West Road, Lanzhou 730000, ChinaKey Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, 320, Donggang West Road, Lanzhou 730000, ChinaKey Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, 320, Donggang West Road, Lanzhou 730000, ChinaAsexual reproduction is the main mode of alpine plant reproduction, and buds play an important role in plant community succession. The purpose of this study is to explore whether the desertified grassland can recover itself through the existing bud bank. The bud bank composition, distribution and size of different desertified grasslands were studied using unit volume excavation on the Tibetan Plateau. The bud bank consisted of tiller, long and short rhizome buds, and more than 40% of buds were distributed in the 0–10 cm soil layer. Enclosure changed the bud density, distribution and composition. The bud densities were 4327 and 2681 No./m<sup>2</sup> in light and middle desertified grasslands before enclosure, while that decreased to 3833 and 2567 No./m<sup>2</sup> after enclosure. Tiller bud density and proportion of middle desertified grassland were the highest, increased from 2765 (31.26%, before enclosure) to 5556 No./m<sup>3</sup> (62.67%, after enclosure). There were new grasses growing out in the extreme desertified grassland after enclosure. The meristem limitation index of moderate desertified grassland was the lowest (0.37), indicating that plant renewal was limited by bud bank. Plants constantly adjust the bud bank composition, distribution, and asexual reproduction strategy, and desertified grasslands can recover naturally, relying on their bud banks through an enclosure.https://www.mdpi.com/2223-7747/10/1/141Tibetan Plateaudesertified grasslandgrassland enclosurebud bankmeristem limitation index |
| spellingShingle | Xinjing Ding Peixi Su Zijuan Zhou Rui Shi Jianping Yang Responses of Plant Bud Bank Characteristics to the Enclosure in Different Desertified Grasslands on the Tibetan Plateau Plants Tibetan Plateau desertified grassland grassland enclosure bud bank meristem limitation index |
| title | Responses of Plant Bud Bank Characteristics to the Enclosure in Different Desertified Grasslands on the Tibetan Plateau |
| title_full | Responses of Plant Bud Bank Characteristics to the Enclosure in Different Desertified Grasslands on the Tibetan Plateau |
| title_fullStr | Responses of Plant Bud Bank Characteristics to the Enclosure in Different Desertified Grasslands on the Tibetan Plateau |
| title_full_unstemmed | Responses of Plant Bud Bank Characteristics to the Enclosure in Different Desertified Grasslands on the Tibetan Plateau |
| title_short | Responses of Plant Bud Bank Characteristics to the Enclosure in Different Desertified Grasslands on the Tibetan Plateau |
| title_sort | responses of plant bud bank characteristics to the enclosure in different desertified grasslands on the tibetan plateau |
| topic | Tibetan Plateau desertified grassland grassland enclosure bud bank meristem limitation index |
| url | https://www.mdpi.com/2223-7747/10/1/141 |
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