Seed distribution of four co-occurring grasses around Artemisia halodendron shrubs in a sandy habitat
文献类型：期刊论文
| 作者 | Li, Feng-Rui; Zhao, Wen-Zhi; Kang, Ling-Fen; Liu, Ji-Liang; Huang, Zhi-Gang; Wang, Qi |
| 刊名 | ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY
 |
| 出版日期 | 2009-05-01 |
| 卷号 | 35期号:3页码:444-451 |
| 关键词 | Herbaceous Species Individual Shrubs Physical Barriers Seed Accumulation Seed Traits Spatial Heterogeneity Wind Conditions |
| 文献子类 | Article |
| 英文摘要 | In a natural population of the perennial semi-shrub Artemisia halodendron in a shifting sandy habitat in the Horqin Desert of eastern Inner Mongolia, six isolated adult A. halodendron individuals of similar canopy size were chosen as target plants. The density of seeds in the top 5 cm soil depth around shrubs was measured using transects aligned to the four main wind directions and at different distances from the shrub base oil both the windward and leeward sides. The effects of shrub presence on seed distribution of four co-occurring grasses were examined by linking seed distribution to seed traits. Of the four species, Setaris viridis and Eragrostis pilosa had small but similar seed mass, while Clitoris virgato and Aristida adscensionis had large but similar seed mass. The species were grouped into two cohorts: small-seeded vs. large-seeded cohorts, and shrub presence effects on seed distribution of both cohorts were examined. We found marked difference in the seed distribution pattern among species, especially between the small-seeded and large-seeded cohorts. The small-seeded cohort had significantly higher seed accumulation oil the windward than the leeward sides in the most and least prevailing wind directions and touch higher seed accumulation on the leeward than the windward sides in the second and third most prevailing wind directions, while opposite patterns occurred in the large-seeded cohort. Four species also showed marked variation in the seed distribution pattern among transects and between windward and leeward sides of each transect. This Study provided further evidence that shrubs embedded in a matrix of herbaceous plants is a key cause of spatial heterogeneity in seed availability of herbaceous species. However, seed distribution responses to the presence of shrubs will vary with species as well as with wind direction, sampling position (windward vs. leeward sides of the shrub) and distance from the shrub. (C) 2009 Published by Elsevier Masson SAS. |
| WOS关键词 | WIND DISPERSAL ; HYDRAULIC REDISTRIBUTION ; SOIL-WATER ; HERBACEOUS VEGETATION ; SEMIARID ENVIRONMENT ; RETAMA-SPHAEROCARPA ; PATAGONIAN STEPPE ; ROOT SYSTEMS ; PLANTS ; PATTERNS |
| 语种 | 英语 |
| WOS记录号 | WOS:000266174400014 |
| 出版者 | GAUTHIER-VILLARS/EDITIONS ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/67935]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Li, Feng-Rui |
| 作者单位 | Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Chinese Ecosyst Res Network, Linze Inland River Basin Res Stn, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Feng-Rui,Zhao, Wen-Zhi,Kang, Ling-Fen,et al. Seed distribution of four co-occurring grasses around Artemisia halodendron shrubs in a sandy habitat[J]. ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY,2009,35(3):444-451. |
| APA | Li, Feng-Rui,Zhao, Wen-Zhi,Kang, Ling-Fen,Liu, Ji-Liang,Huang, Zhi-Gang,&Wang, Qi.(2009).Seed distribution of four co-occurring grasses around Artemisia halodendron shrubs in a sandy habitat.ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY,35(3),444-451. |
| MLA | Li, Feng-Rui,et al."Seed distribution of four co-occurring grasses around Artemisia halodendron shrubs in a sandy habitat".ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY 35.3(2009):444-451. |
入库方式： OAI收割
来源：地理科学与资源研究所
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