التفاصيل البيبلوغرافية
| العنوان: |
Impact of biochar amendment on soil hydrological properties and crop water use efficiency: A global meta‐analysis and structural equation model. |
| المؤلفون: |
Wu, Wenao, Han, Jiayuan, Gu, Yining, Li, Tong, Xu, Xiangrui, Jiang, Yuhan, Li, Yunpeng, Sun, Jianfei, Pan, Genxing, Cheng, Kun |
| المصدر: |
GCB Bioenergy; Jun2022, Vol. 14 Issue 6, p657-668, 12p |
| مصطلحات موضوعية: |
WATER efficiency, STRUCTURAL equation modeling, BIOCHAR, SOIL amendments, WATER supply, SOIL porosity |
| مستخلص: |
The regulation of soil water retention by biochar amendment has been concerned especially in cropland ecosystem. However, the quantification of biochar's effects on soil hydrological properties and crop water use efficiency (WUE) is still limited, and the factors driving the biochar effect need to be investigated. Based on a database with 681 observations, meta‐analysis and structural equation model (SEM) were employed to reveal how biochar amendment affects water supply capacity and WUE. The results showed that biochar application increased available water content (AWC) and WUE by 26.8% and 4.7% on average, respectively. According to the SEM of AWC (R2 = 0.70–0.96), the increase of soil organic carbon (+36.1%) by biochar application can not only directly improve AWC but also indirectly improve AWC by affecting permanent wilting point (−1.0%) and mean weight diameter (+11.1%). The SEM of WUE (R2 = 0.74) indicated that soil moisture and porosity were increased by 10.8% and 7.0% under biochar amendment, which was the reason why biochar improved WUE. This study emphasized that biochar can improve soil hydrology and crop yield by increasing soil water supply conditions. And a rational rate of biochar is the precondition to obtaining the benefits of soil hydrology, otherwise, the excessive use of biochar may lead to the decline of WUE. [ABSTRACT FROM AUTHOR] |
|
Copyright of GCB Bioenergy is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Full Text Finder