Quantification of the contrasting root systems of Pinus thunbergii in soils with different groundwater levels in a coastal forest in Japan

2018 ◽  
Vol 426 (1-2) ◽  
pp. 327-337 ◽  
Author(s):  
Yasuhiro Hirano ◽  
Chikage Todo ◽  
Keitaro Yamase ◽  
Toko Tanikawa ◽  
Masako Dannoura ◽  
...  
Keyword(s):  
Root Systems ◽  
Pinus Thunbergii ◽  
Coastal Forest ◽  
Groundwater Levels

scholarly journals Correction to: Quantification of the contrasting root systems of Pinus thunbergii in soils with different groundwater levels in a coastal forest in Japan

2018 ◽  
Vol 427 (1-2) ◽  
pp. 393-394
Author(s):  
Yasuhiro Hirano ◽  
Chikage Todo ◽  
Keitaro Yamase ◽  
Toko Tanikawa ◽  
Masako Dannoura ◽  
...  
Keyword(s):  
Root Systems ◽  
Pinus Thunbergii ◽  
Coastal Forest ◽  
Groundwater Levels

ALGORITHM FOR MANAGEMENT AND PROTECTION OF SUBMERSIBLE PUMP

2019 ◽  
pp. 245-250
Author(s):  
Tanya Pehlivanova
Keyword(s):  
Global Warming ◽  
Submersible Pump ◽  
Groundwater Levels ◽  
Frequent Switching ◽  
Full Utilization ◽  
Level Sensors

Global warming has led to lower levels of the water basins. Groundwater levels also decrease. Sometimes they fall so much so that submersible pumps in the wells remain almost dry and even in short work cycles get damaged. Their repairs are very expensive and labour intensive. An algorithm for management and protection of submersible pump is proposed in the paper. It uses 5 level sensors. It allows full utilization of the wells capacity and protects the pump motors from premature wear due to frequent switching on and off.

Using groundwater levels and Specific Yield to Estimate the Recharge, South of Erbil, Kurdistan Region, Iraq

2018 ◽  
Vol 7 (4) ◽  
pp. 191
Author(s):  
Sherwan Sh. Qurtas
Keyword(s):  
Unconfined Aquifer ◽  
Middle Part ◽  
Water Levels ◽  
Specific Yield ◽  
Aquifer System ◽  
Groundwater Levels ◽  
Monitoring Wells ◽  
Water Table Fluctuation Method ◽  
Recharge Estimation ◽  
Fluctuation Method

Recharge estimation accurately is crucial to proper groundwater resource management, for the groundwater is dynamic and replenished natural resource. Usually recharge estimation depends on the; the water balance, water levels, and precipitation. This paper is studying the south-middle part of Erbil basin, with the majority of Quaternary sediments, the unconfined aquifer system is dominant, and the unsaturated zone is ranging from 15 to 50 meters, which groundwater levels response is moderate. The purpose of this study is quantification the natural recharge from precipitation. The water table fluctuation method is applied; using groundwater levels data of selected monitoring wells, neighboring meteorological station of the wells, and the specific yield of the aquifers. This method is widely used for its simplicity, scientific, realistic, and direct measurement. The accuracy depends on the how much the determination of specific yield is accurate, accuracy of the data, and the extrapolations of recession of groundwater levels curves of no rain periods. The normal annual precipitation there is 420 mm, the average recharge is 89 mm, and the average specific yield is around 0.03. The data of one water year of 2009 and 2010 has taken for some technical and accuracy reasons.

Propagation of Japanese Black Pine (Pinus thunbergii) Seedlings for Restoration of Coastal Protection Forest

2015 ◽  
Vol 69 (4) ◽  
pp. 366-368
Author(s):  
Naoki Negishi ◽  
Nobuaki Urata ◽  
Katsuhiko Nakahama ◽  
Akiyoshi Kawaoka
Keyword(s):  
Pinus Thunbergii ◽  
Coastal Protection ◽  
Black Pine ◽  
Protection Forest ◽  
Japanese Black Pine
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