| Soil moisture dynamics in alfalfa fields following caragana forest clearing in the Loess Hilly Region of southern Ningnan |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2025.04.16 |
| Key Words: soil desiccation alfalfa soil moisture water use efficiency Loess Hilly Region |
| Author Name | Affiliation | | MA Bing | School of Forestry and Grassland Science, Ningxia University, Yinchuan, Ningxia 750021, China
State Key Laboratory of Efficient Production of Forest Resources, Ningxia University, Yinchuan, Ningxia 750021, China | | TENG Yuan | School of Forestry and Grassland Science, Ningxia University, Yinchuan, Ningxia 750021, China
State Key Laboratory of Efficient Production of Forest Resources, Ningxia University, Yinchuan, Ningxia 750021, China | | WANG Xing | School of Forestry and Grassland Science, Ningxia University, Yinchuan, Ningxia 750021, China
State Key Laboratory of Efficient Production of Forest Resources, Ningxia University, Yinchuan, Ningxia 750021, China | | CHEN Wenhao | School of Forestry and Grassland Science, Ningxia University, Yinchuan, Ningxia 750021, China
State Key Laboratory of Efficient Production of Forest Resources, Ningxia University, Yinchuan, Ningxia 750021, China | | YU Xiao | School of Forestry and Grassland Science, Ningxia University, Yinchuan, Ningxia 750021, China
State Key Laboratory of Efficient Production of Forest Resources, Ningxia University, Yinchuan, Ningxia 750021, China | | WU Xianzhong | College of Urban Environment, Lanzhou City University, Lanzhou, Gansu 730070, China | | LV Wen | School of Ecology and Environment, Ningxia University, Yinchuan, Ningxia 750021, China | | WANG Zhitong | Alashan Left Banner Zongbieli Town Comprehensive Security and Technology Promotion Center, Alxa Left Banner, Inner Mongolia 750300, China | | HOU Jiana | School of Forestry and Grassland Science, Ningxia University, Yinchuan, Ningxia 750021, China
State Key Laboratory of Efficient Production of Forest Resources, Ningxia University, Yinchuan, Ningxia 750021, China | | MA Weiwei | School of Ecology and Environment, Ningxia University, Yinchuan, Ningxia 750021, China |
|
| Hits: 6 |
| Download times: 1 |
| Abstract: |
| To investigate soil moisture dynamics under deep\|rooted perennial plants re\|planted in the context of deep soil drying in the Loess Hilly Region, a field experiment was conducted at the Wangwa Soil and Water Conservation Experimental Station. The study simulated the replanting of alfalfa in previously dried soil and continuously monitored soil moisture from 0 to 600 cm depth between 2022 and 2024, alongside measurements of alfalfa yield and water use efficiency. The results are as follows: (1) Diurnal variations in soil moisture decreased with increasing depth, becoming relatively stable at the 40 cm soil layer. The timing of maximum and minimum daily soil moisture content values was progressively delayed from May to October. (2) In the context of deep soil drying, during the first year of alfalfa replanting, soil moisture storage increased significantly, primarily within the 0~340 cm soil layer. Moisture recovery in the dry soil layer reached 76% of field capacity, with a recovery depth of up to 290 cm. During the second and third years of alfalfa cultivation, soil moisture consumption was predominant, and effective soil water storage was nearly exhausted by the third year. (3) Compared to the control group, alfalfa yield and water use efficiency showed no significant differences during the first and second years of replanting. However, yield declined significantly in the third year of replanting, while water use efficiency remained unchanged. These findings provide scientific support for the sustainable replacement of artificial vegetation and the rational management of water resources in the Loess Hilly Region. |
|
|
|