Next Article in Journal
Quantification of Uncertainties from Image Processing and Analysis in Laboratory-Scale DNAPL Release Studies Evaluated by Reflective Optical Imaging
Previous Article in Journal
Improvement of Hargreaves–Samani Reference Evapotranspiration Estimates with Local Calibration
Open AccessArticle

The Evapotranspiration of Tamarix and Its Response to Environmental Factors in Coastal Saline Land of China

1
Key Laboratory of Agricultural Water Resources, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China
2
College of Advanced Agricultural Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
3
Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China
4
College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
*
Authors to whom correspondence should be addressed.
Water 2019, 11(11), 2273; https://doi.org/10.3390/w11112273
Received: 27 September 2019 / Revised: 25 October 2019 / Accepted: 26 October 2019 / Published: 30 October 2019
(This article belongs to the Section Hydrology)
(1) Background: As a halophytic species, Tamarix (Tamarix chinensis) can be used for saline soil rehabilitation in China. The reclamation and rehabilitation of saline soil depend on the water consumption of plants. However, whether water resources in saline soil can support the construction of Tamarix vegetation is still unknown. (2) Methods: In this study, we measured the transpiration (T) of Tamarix for 3 years using sap flow and the evaporation (E) for 1 year using a micro-lysimeter in Tamarix land. The evaporation values in 2016 and 2017 were estimated with the soil crop coefficients obtained in 2018. (3) Results: The evapotranspiration (ET) ranged from 514.2 to 573.8 mm and was greatly affected by the wind speed, VPD and groundwater table. Transpiration was the main form of water consumption in this region, accounting for 60.2% of the total evapotranspiration. Compared with bare land, vegetation construction increased soil moisture dissipation by 377.6 mm in 2018. According to on-site measurements and estimates, the water shortage in the dry year was 107.2 mm, and the residual water values in the normal year and wet year were 77.8 mm and 187.5 mm, respectively. May and September were months of widespread water shortages in different precipitation years. Although the cultivation of this plant increased water consumption, the groundwater table remained at approximately 0.5 m during the study year. (4) Conclusions: These results indicated that planting Tamarix in coastal saline soil was feasible for the reclamation and rehabilitation of saline soil. In the dry year (2017), the consumption of evapotranspiration exceeded the precipitation. The inverse occurred in the normal year (2016) and wet year (2018). Taken together, our findings showed that the water resources in the coastal saline soil of China could tolerate vegetation construction and laid a strong foundation for saline soil rehabilitation. View Full-Text
Keywords: Tamarix chinensis; rehabilitation of saline soil; evapotranspiration; gray relational analyses; coastal saline soil Tamarix chinensis; rehabilitation of saline soil; evapotranspiration; gray relational analyses; coastal saline soil
Show Figures

Figure 1

MDPI and ACS Style

Chen, H.; Yang, C.; Ren, A.; Guo, K.; Feng, X.; Li, J.; Liu, X.; Sun, H.; Wang, J. The Evapotranspiration of Tamarix and Its Response to Environmental Factors in Coastal Saline Land of China. Water 2019, 11, 2273.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop