Exploring long-term impacts of different crop rotation systems on sustainable use of groundwater resources using DSSAT model

2022 ◽  
pp. 130377
Author(s):  
Fei Gao ◽  
Xiaobo Luan ◽  
Yali Yin ◽  
Shikun Sun ◽  
Yi Li ◽  
...  
Author(s):  
K. Furuno ◽  
A. Kagawa ◽  
O. Kazaoka ◽  
T. Kusuda ◽  
H. Nirei

Abstract. Over 40 million people live on and exploit the groundwater resources of the Kanto Plain. The Plain encompasses metropolitan Tokyo and much of Chiba Prefecture. Useable groundwater extends to the base of the Kanto Plain, some 2500 to 3000 m below sea level. Much of the Kanto Plain surface is at sea level. By the early 1970s, with increasing urbanization and industrial expansion, local overdraft of groundwater resources caused major ground subsidence and damage to commercial and residential structures as well as to local and regional infrastructure. Parts of the lowlands around Tokyo subsided to 4.0 m below sea level; particularly affected were the suburbs of Funabashi and Gyotoku in western Chiba. In the southern Kanto Plain, regulations, mainly by local government and later by regional agencies, led to installation of about 500 monitoring wells and almost 5000 bench marks by the 1990's. Many of them are still working with new monitoring system. Long-term monitoring is important. The monitoring systems are costly, but the resulting data provide continuous measurement of the "health" of the Kanto Groundwater Basin, and thus permit sustainable use of the groundwater resource.


2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Mara Meggiorin ◽  
Giulia Passadore ◽  
Silvia Bertoldo ◽  
Andrea Sottani ◽  
Andrea Rinaldo

The social, economic, and ecological importance of the aquifer system within the Bacchiglione basin (Veneto, IT) is noteworthy, and there is considerable disagreement among previous studies over its sustainable use. Investigating the long-term quantitative sustainability of the groundwater system, this study presents a statistical methodology that can be applied to similar cases. Using a combination of robust and widely used techniques, we apply the seasonal Mann–Kendall test and the Sen’s slope estimator to the recorded groundwater level timeseries. The analysis is carried out on a large and heterogeneous proprietary dataset gathering hourly groundwater level timeseries at 79 control points, acquired during the period 2005–2019. The test identifies significant decreasing trends for most of the available records, unlike previous studies on the quantitative status of the same resource which covered the domain investigated here for a slightly different period: 2000–2014. The present study questions the reason for such diverging results by focusing on the method’s accuracy. After carrying out a Fourier analysis on the longest available timeseries, for studies of groundwater status assessment this work suggests applying the Mann–Kendall test to timeseries longer than 20 years (because otherwise the analysis would be affected by interannual periodicities of the water cycle). A further analysis of two 60-year-long monthly timeseries between 1960 and 2020 supports the actual sustainable use of the groundwater resource, the past deployment of the groundwater resources notwithstanding. Results thus prove more reliable, and meaningful inferences on the longterm sustainability of the groundwater system are possible.


2019 ◽  
Vol 32 (1) ◽  
pp. 111-137
Author(s):  
Gabriela Cuadrado-Quesada ◽  
Rosemary Rayfuse

Abstract Groundwater resources have come under increasing pressure from overuse and pollution leading to declines in both quantity and quality. As a renewable resource, the continued availability of sufficient and clean groundwater depends on its sustainable use. However, groundwater use has often been unsustainable, and in many countries—both developing and developed—legal and policy frameworks for its sustainable use remain limited and their design and implementation are under-researched. This article examines the drivers that motivate the development and implementation of legal and policy frameworks capable of ensuring the long-term sustainability of groundwater resources. Case studies conducted in Australia and Costa Rica reveal four key drivers: (i) the existence of a water crisis, (ii) awareness—which leads to information, learning and monitoring, (iii) civic leadership to foster meaningful participation and, (iv) government research and funding in order to understand the complexity of groundwater.


Author(s):  
Ol'ga Gladysheva ◽  
Oksana Artyuhova ◽  
Vera Svirina

The results of long-term research in experiments with crop rotations with different clover saturation are presented. It is shown that the cluster has a positive effect on the main indicators of vegetation of dark-gray forest soil. The introduction of two fields of perennial grasses into the six-field crop rotation significantly increases both the humus reserves and increases the productivity of arable land by 1.5–2 times compared to the crop rotation with a field of pure steam.


Author(s):  
Mahdi Al-Kaisi ◽  
Mark A. Licht ◽  
Beth E. Larabee
Keyword(s):  

Author(s):  
Mahdi Al-Kaisi ◽  
Mark A. Licht ◽  
Beth E. Larabee
Keyword(s):  

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