Biocrust impacts on dryland soil water balance: A path toward the whole picture
文献类型：期刊论文
| 作者 | Li, Shenglong3,4; Bowker, Matthew A.2; Xiao, Bo1,3,4 |
| 刊名 | GLOBAL CHANGE BIOLOGY
 |
| 出版日期 | 2022-09-12 |
| 页码 | 20 |
| ISSN号 | 1354-1013 |
| 关键词 | automated microlysimeter Chinese Loess Plateau evaporation non-rainfall water soil water balance soil water storage |
| DOI | 10.1111/gcb.16416 |
| 通讯作者 | Xiao, Bo(xiaobo@cau.edu.cn) |
| 英文摘要 | As a crucial living feature inhabiting the soil-atmosphere boundary, biocrusts play a vital role in liquid water or vapor transport through surface soil and thus have strong effects on soil water regimes. However, it remains unclear how biocrusts affect annual or multiyear soil water budgets through the regulation of evaporation outputs and non-rainfall water (NRW) or infiltration inputs. Thus, we used automated microlysimeters to continually investigate the differences in evaporation and NRW rates between moss-dominated biocrusts and bare soil at 0-5 cm depth for 2 years. The upper 30 cm of soil moisture (theta) and water storage (W) of bare soil and biocrusts were also monitored. Our results showed that the daily evaporation rate (E) of biocrusts was 17% higher than bare soil. Especially after rainfall events, biocrusts had higher E and larger cumulative evaporation than bare soil. Besides, the daily NRW of biocrusts averaged 15% higher than bare soil over 2 years. Furthermore, biocrusts increased theta by 11%-76% at 0-10 cm depth but decreased theta by 32%-56% at 20-30 cm depth in comparison to bare soil, and they subsequently decreased W by 20% at 0-30 cm depth. Summarized annually, the NRW amount of biocrusts was 19% higher than bare soil, but at the same time, the cumulative evaporation of biocrusts was also 19% higher than bare soil. Finally, biocrusts resulted in more water loss at shallow depth through evaporation and lessened total W throughout 0-30 cm depth of soil. These findings demonstrate that although biocrusts input more NRW into surface soil, these water inputs partially offset their intensified evaporation. Given that all rainfall water infiltrates into the soil in our study system, our findings indicate that biocrusts may have an overall negative effect on soil water balance there, while at the same time increasing water storage and availability of the deeper soil underlying biocrusts. |
| WOS关键词 | NON-RAINFALL WATER ; DEW FORMATION ; SEMIARID ECOSYSTEMS ; REVEGETATED AREA ; TENGGER DESERT ; LOESS PLATEAU ; NEGEV DESERT ; CRUSTS ; EVAPORATION ; MOSS |
| 资助项目 | National Natural Science Foundation of China[42077010] ; Open Fund for Key Laboratory of Land Degradation and Ecological Restoration in Northwestern China of Ningxia University[LDER2022Z02] ; West Light Foundation of the Chinese Academy of Sciences[2019] |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000852700300001 |
| 资助机构 | National Natural Science Foundation of China ; Open Fund for Key Laboratory of Land Degradation and Ecological Restoration in Northwestern China of Ningxia University ; West Light Foundation of the Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/182886]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xiao, Bo |
| 作者单位 | 1.Ningxia Univ, Breeding Base State Key Lab Land Degradat & Ecol, Key Lab Restorat & Reconstruct Degraded Ecosyst N, Minist Educ, Yinchuan, Ningxia, Peoples R China 2.No Arizona Univ, Sch Forestry, Flagstaff, AZ 86011 USA 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China 4.China Agr Univ, Coll Land Sci & Technol, Key Lab Arable Land Conservat North China, Minist Agr & Rural Affairs, 2 Yuanmingyuan West Rd, Beijing 100193, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Shenglong,Bowker, Matthew A.,Xiao, Bo. Biocrust impacts on dryland soil water balance: A path toward the whole picture[J]. GLOBAL CHANGE BIOLOGY,2022:20. |
| APA | Li, Shenglong,Bowker, Matthew A.,&Xiao, Bo.(2022).Biocrust impacts on dryland soil water balance: A path toward the whole picture.GLOBAL CHANGE BIOLOGY,20. |
| MLA | Li, Shenglong,et al."Biocrust impacts on dryland soil water balance: A path toward the whole picture".GLOBAL CHANGE BIOLOGY (2022):20. |
入库方式： OAI收割
来源：地理科学与资源研究所
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