Effect of intensity of small rainfall simulation in spring on annuals in horqin sandy land, china
文献类型：期刊论文
| 作者 | Ma, Yunhua1,2; Zhang, Tonghui1; Liu, Xinping1 |
| 刊名 | Environmental earth sciences
 |
| 出版日期 | 2015-07-01 |
| 卷号 | 74期号:1页码:727-735 |
| 关键词 | Small rainfall events Annuals Germination Vegetation characteristics Horqin sandy land |
| ISSN号 | 1866-6280 |
| DOI | 10.1007/s12665-015-4077-4 |
| 通讯作者 | Zhang, tonghui(zhangth@lzb.ac.cn) |
| 英文摘要 | The composition and development of sandy land plant communities in arid and semiarid environments largely depend on rainfall pulses. however, little is known about how the intensity of small rainfall events affects the emergence and growth of annuals in spring. for this study, an experiment was designed to simulate the effect of low-intensity spring rainfall events on annuals in horqin sandy land, china, in may of 2011 and 2012. it included rainfall treatments of 2 mm (applied 16 times), 4 mm (applied 8 times), and 8 mm (applied 4 times), and a control check (ck, which received natural rainfall). the soil water content, species composition, seed germination, plant density, height, and coverage, and aboveground biomass were measured. results showed that rainfall intensity had a significant influence on the emergence and growth of annuals. a rainfall of 8 mm was the threshold for germination, whether as a single rainfall event or as accumulated rainfall. the 8-mm treatment also resulted in the greatest number of seedlings, while the 2-mm treatment provided the least. community characteristics such as species number, density, and coverage increased with rainfall intensity; height and canopy decreased; the shannon-wiener index showed no obvious trend. the distribution of rain amount and frequency impacted biomass accumulation: with increased rainfall intensity and extended rainfall intervals, biomass was significantly increased compared to the control check. |
| WOS关键词 | SHORTGRASS STEPPE ; PRECIPITATION PATTERNS ; DESERT ECOSYSTEMS ; MESIC GRASSLAND ; PLANT ; PRODUCTIVITY ; SOIL ; COMMUNITY ; DYNAMICS ; EVENTS |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
| WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000356347800056 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2376383 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zhang, Tonghui |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Naiman Desertificat Res Stn, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Yunhua,Zhang, Tonghui,Liu, Xinping. Effect of intensity of small rainfall simulation in spring on annuals in horqin sandy land, china[J]. Environmental earth sciences,2015,74(1):727-735. |
| APA | Ma, Yunhua,Zhang, Tonghui,&Liu, Xinping.(2015).Effect of intensity of small rainfall simulation in spring on annuals in horqin sandy land, china.Environmental earth sciences,74(1),727-735. |
| MLA | Ma, Yunhua,et al."Effect of intensity of small rainfall simulation in spring on annuals in horqin sandy land, china".Environmental earth sciences 74.1(2015):727-735. |
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来源：中国科学院大学
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