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Wu J, Hou X, Xu L, Zhou Q, Wang Y, Guo Z, Adomako MO, Ma Q. Belowground bud banks and land use change: roles of vegetation and soil properties in mediating the composition of bud banks in different ecosystems. FRONTIERS IN PLANT SCIENCE 2024; 14:1330664. [PMID: 38250452 PMCID: PMC10796614 DOI: 10.3389/fpls.2023.1330664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 12/12/2023] [Indexed: 01/23/2024]
Abstract
Introduction Belowground bud banks play integral roles in vegetation regeneration and ecological succession of plant communities; however, human-caused changes in land use severely threaten their resilience and regrowth. Although vegetation attributes and soil properties mediate such anthropogenic effects, their influence on bud bank size and composition and its regulatory mechanisms under land use change have not been explored. Methods We conducted a field investigation to examine impacts of land use change on bud bank size and composition, vegetation attributes, and soil properties in wetlands (WL), farmlands (FL), and alpine meadow (AM) ecosystems in Zhejiang Province, China. Results Overall, 63 soil samples in close proximity to the vegetation quadrats were excavated using a shovel, and samples of the excavated soil were placed in plastic bags for onward laboratory soil analysis. The total bud density (1514.727 ± 296.666) and tiller bud density (1229.090 ± 279.002) in wetland ecosystems were significantly higher than in farmland and alpine meadow ecosystems [i.e., total (149.333 ± 21.490 and 573.647 ± 91.518) and tiller bud density (24.666 ± 8.504 and 204.235 ± 50.550), respectively]. While vegetation attributes critically affected bud banks in WL ecosystems, soil properties strongly influenced bud banks in farmland and alpine meadow ecosystems. In wetland ecosystems, total and tiller buds were predominantly dependent on soil properties, but vegetation density played a significant role in farmlands and alpine meadow ecosystems. Root sprouting and rhizome buds significantly correlated with total C in the top 0 - 10 cm layer of farmland and alpine meadow ecosystems, respectively, and depended mainly on soil properties. Discussion Our results demonstrate that land use change alters bud bank size and composition; however, such responses differed among bud types in wetland, farmland, and alpine meadow ecosystems.
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Affiliation(s)
- Jing Wu
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, School of Life Sciences, Taizhou University, Taizhou, China
| | - Xianzhang Hou
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, School of Life Sciences, Taizhou University, Taizhou, China
| | - Lan Xu
- Department of Natural Resource Management, South Dakota State University, Brookings, SD, United States
| | - Quanlai Zhou
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Yongcui Wang
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Ziwu Guo
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hanzhou, China
| | - Michael Opoku Adomako
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, School of Life Sciences, Taizhou University, Taizhou, China
- Institute of Wetland Ecology and Clone Ecology, Taizhou University, Taizhou, China
| | - Qun Ma
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
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Li Y, Bao G, Zhang P, Feng X, Ma J, Lu H, Shi H, Wei X, Tang B, Liu K. Changes in bud bank and their correlation with plant community composition in degraded alpine meadows. FRONTIERS IN PLANT SCIENCE 2023; 14:1259340. [PMID: 37900741 PMCID: PMC10613031 DOI: 10.3389/fpls.2023.1259340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 09/26/2023] [Indexed: 10/31/2023]
Abstract
Bud banks are considered a crucial factor in regulating the species composition of grassland communities and maintaining the ecological function of alpine grasslands. However, few studies have paid attention to the dynamic changes of bud banks from undisturbed to severely degraded alpine meadows. Therefore, this study examined the correlations between plant diversity and bud bank traits at different stages of alpine meadows degradation. Grass biomasses and plant diversity were found to be highest in moderately degraded meadows, and sedge biomasses were highest in lightly degraded meadows. Lack of disturbance and moderate disturbance by herbivores increased the bud bank density of alpine meadows. Consistent with the changes in bud bank density, bud bank diversity was highest in undisturbed meadows. The structural equation model indicated that the densities of rhizome and the densities and diversities of tiller buds play crucial roles in facilitating the greater diversity of the plant community. Our findings suggest that the diversities and densities of rhizome and tiller buds in the degradation stages are synchronized with changes in plant diversity, and in the regenerative ability of bud banks, which largely determine the outcome of restoration in degraded meadows. These findings could provide a frame of reference for effectively restoring degraded alpine regions by regenerating bud banks. The potential driving force and renewal capacity of bud banks should be taken into account in restoring the Qinghai-Tibet Plateau's degraded meadow.
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Affiliation(s)
- Yuan Li
- Academy of Animal and Veterinary Medicine, Qinghai University, Xining, China
| | - Gensheng Bao
- Academy of Animal and Veterinary Medicine, Qinghai University, Xining, China
- State Key Laboratory of Sanjiangyuan Ecology and Plateau Agriculture and Animal Husbandry, Qinghai University, Xining, China
| | - Peng Zhang
- Academy of Animal and Veterinary Medicine, Qinghai University, Xining, China
| | - Xiaoyun Feng
- Academy of Animal and Veterinary Medicine, Qinghai University, Xining, China
| | - Jingjuan Ma
- Academy of Animal and Veterinary Medicine, Qinghai University, Xining, China
| | - Hainian Lu
- Academy of Animal and Veterinary Medicine, Qinghai University, Xining, China
| | - Hongxiao Shi
- Grassland Research Institute of the Chinese Academy of Agricultural Science, Hohhot, China
| | - Xiaoxing Wei
- Academy of Animal and Veterinary Medicine, Qinghai University, Xining, China
- State Key Laboratory of Sanjiangyuan Ecology and Plateau Agriculture and Animal Husbandry, Qinghai University, Xining, China
| | | | - Kai Liu
- Qinghai Provincial Grassland Station, Xining, China
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Xu Q, Liu H, Li M, Li P. Interactive Effect of Irrigation Volume and Planting Density on Growth and Salt Uptake in Field-Grown Drip-Irrigated Suaeda salsa (L.) Pall. PLANTS (BASEL, SWITZERLAND) 2023; 12:1383. [PMID: 36987070 PMCID: PMC10053060 DOI: 10.3390/plants12061383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 03/13/2023] [Accepted: 03/16/2023] [Indexed: 06/19/2023]
Abstract
Planting halophytes such as Suaeda salsa (L.) Pall. under drip irrigation is a viable solution for the remediation of saline soils. We conducted this study to investigate the effects of different irrigation volumes and planting densities on the growth and salt uptake of Suaeda salsa under drip irrigation. The plant was cultivated in a field using drip irrigation at various irrigation volumes (3000 m·hm-2 (W1), 3750 m·hm-2 (W2), and 4500 m·hm-2 (W3)) and planting densities (30 plants·m-2 (D1), 40 plants·m-2 (D2), 50 plants·m-2 (D3), and 60 plants·m-2 (D4)) to examine the effects on growth and salt uptake. The study revealed that the amount of irrigation, planting density, and interaction between the two significantly affected the growth characteristics of Suaeda salsa. The plant height, stem diameter, and canopy width increased simultaneously with an increase in the irrigation volume. However, with an increasing planting density and the same irrigation volume, the plant height first increased and then decreased, while the stem diameter and canopy width decreased simultaneously. The biomass of D1 was the highest with the W1 irrigation, while that of D2 and D3 were highest with the W2 and W3 irrigations. The amount of irrigation, planting density, and their interaction significantly affected the ability of Suaeda salsa to absorb salt. The salt uptake increased initially and then decreased with an increasing irrigation volume. At the same planting density, the salt uptake of Suaeda salsa with the W2 treatment was 5.67~23.76% and 6.40~27.10% higher than that with W1 and W3, respectively. Using the multiobjective spatial optimization method, the scientific and reasonable irrigation volume for planting Suaeda salsa in arid areas was determined to be 3276.78~3561.32 m3·hm-2, and the corresponding planting density was 34.29~43.27 plants·m-2. These data can be a theoretical basis for planting Suaeda salsa under drip irrigation to improve saline-alkali soils.
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Affiliation(s)
- Qiang Xu
- College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, China; (Q.X.); (M.L.); (P.L.)
- Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi 832000, China
| | - Hongguang Liu
- College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, China; (Q.X.); (M.L.); (P.L.)
- Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi 832000, China
| | - Mingsi Li
- College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, China; (Q.X.); (M.L.); (P.L.)
- Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi 832000, China
| | - Pengfei Li
- College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, China; (Q.X.); (M.L.); (P.L.)
- Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi 832000, China
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Li W, Huang A, Zhou T, Liu M, Ma S, Zhao N, Wang X, Sun J. Patterns and drivers of the belowground bud bank in alpine grasslands on the Qinghai-Tibet Plateau. FRONTIERS IN PLANT SCIENCE 2023; 13:1095864. [PMID: 36743557 PMCID: PMC9893863 DOI: 10.3389/fpls.2022.1095864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 12/29/2022] [Indexed: 06/18/2023]
Abstract
INTRODUCTION In grassland ecosystems dominated by asexual plants, the maintenance, renewal, and resistance of plant populations to disturbance are more dependent on the belowground bud bank (BBB). However, the response of the BBB to environmental factors in the alpine grassland of the Qinghai-Tibet Plateau (QTP) is still unknown. METHODS Therefore, a transect survey was conducted to measure the size and scale of BBB and 21 factors in the alpine grassland of the QTP. In addition, the critical driving factors of BBB were screened by boost regression tree analysis, and a structural equation model (SEM) was employed to express the path coefficients of the key factors on the BBB size. RESULTS The results showed that BBB size had no significant geographical pattern in the QTP, and the BBB size was mainly accounted for by soil leucine aminopeptidase (LAP, 17.32%), followed by Margalef and Shannon -Wiener indices of plants (12.63% and 9.24%, respectively), and precipitation (9.23%). SEM further indicated significant positive effects of plant diversity (scored at 0.296) and precipitation (scored at 0.180) on BBB size, and a significant negative effect of LAP (scored at 0.280) on BBB size. DISCUSSION Generally, the findings allow for better understanding of the regulated mechanisms of BBB size and the importance of the role of bud bank in the restoration of the grassland ecosystem.
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Affiliation(s)
- Wencheng Li
- Key Laboratory of Alpine Vegetation Ecological Security, Tibet Agriculture and Animal Husbandry University, Nyingchi, China
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, Tibet Agriculture and Animal Husbandry University, Nyingchi, China
- Qiangtang Alpine Grassland Ecosystem Research Station (jointly built with Lanzhou University), Tibet Agricultural and Animal Husbandry University, Nyingchi, China
| | - Aiping Huang
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Tiancai Zhou
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China
| | - Miao Liu
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Sujie Ma
- Qiangtang Alpine Grassland Ecosystem Research Station (jointly built with Lanzhou University), Tibet Agricultural and Animal Husbandry University, Nyingchi, China
- College of Animal Science, Tibet Agricultural and Animal Husbandry University, Nyingchi, China
| | - Ningning Zhao
- College of Resources and Environment, Tibet Agriculture and Animal Husbandry University, Nyingchi, China
- Qiangtang Alpine Grassland Ecosystem Research Station (jointly built with Lanzhou University), Tibet Agricultural and Animal Husbandry University, Nyingchi, China
| | - Xiangtao Wang
- Qiangtang Alpine Grassland Ecosystem Research Station (jointly built with Lanzhou University), Tibet Agricultural and Animal Husbandry University, Nyingchi, China
- College of Animal Science, Tibet Agricultural and Animal Husbandry University, Nyingchi, China
| | - Jian Sun
- State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China
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Ding X, Su P, Zhou Z, Shi R, Yang J. Responses of Plant Bud Bank Characteristics to the Enclosure in Different Desertified Grasslands on the Tibetan Plateau. PLANTS (BASEL, SWITZERLAND) 2021; 10:141. [PMID: 33445486 PMCID: PMC7826903 DOI: 10.3390/plants10010141] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 01/09/2021] [Accepted: 01/09/2021] [Indexed: 11/16/2022]
Abstract
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./m2 in light and middle desertified grasslands before enclosure, while that decreased to 3833 and 2567 No./m2 after enclosure. Tiller bud density and proportion of middle desertified grassland were the highest, increased from 2765 (31.26%, before enclosure) to 5556 No./m3 (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.
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Affiliation(s)
- Xinjing Ding
- Key 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, China; (X.D.); (Z.Z.); (R.S.); (J.Y.)
- Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Peixi Su
- Key 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, China; (X.D.); (Z.Z.); (R.S.); (J.Y.)
| | - Zijuan Zhou
- Key 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, China; (X.D.); (Z.Z.); (R.S.); (J.Y.)
| | - Rui Shi
- Key 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, China; (X.D.); (Z.Z.); (R.S.); (J.Y.)
| | - Jianping Yang
- Key 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, China; (X.D.); (Z.Z.); (R.S.); (J.Y.)
- Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
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Belowground Bud Bank Distribution and Aboveground Community Characteristics along Different Moisture Gradients of Alpine Meadow in the Zoige Plateau, China. SUSTAINABILITY 2019. [DOI: 10.3390/su11092602] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The belowground bud bank plays an important role in plant communities succession and maintenance. In order to understand the response of the bud bank to the sod layer moisture, we investigated the bud bank distribution, size, and composition of six different water gradient alpine meadows through excavating in the Zoige Plateau. The results showed: (1) The alpine meadow plant belowground buds were mainly distributed in the 0–10 cm sod layer, accounting for 74.2%–100% of the total. The total bud density of the swamp wetland and degraded meadow was the highest (16567.9 bud/m3) and the lowest (4839.5 bud/m3). (2) A decrease of the moisture plant diversity showed a trend of increasing first and then decreasing. Among six alpine meadows the swamp meadow plant diversity was the highest, and species richness, Simpson, Shannon–Wiener, and Pielou were 10.333, 0.871, 0.944, and 0.931, respectively. (3) The moisture was significantly positively correlated with the total belowground buds and short rhizome bud density. There were significant positive correlations with sod layer moisture and tiller bulb bud density. This study indicates that the moisture affected bud bank distribution and composition in the plant community, and the results provide important information for predicting plant community succession in the alpine meadow with future changes in precipitation patterns.
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