The Impact on Agricultural Water Demand Due To Partial Sabbath of Paddy Farming
碩士 === 國立臺灣大學 === 農業工程學系 === 84 === The water demands in Taiwan increased rapidly from the growth of population and commercial and industrial activities. Although the average annual precipitation are more than 2500mm, water supply shortage may occur becau...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
1996
|
| Online Access: | http://ndltd.ncl.edu.tw/handle/06856876902194850618 |
| Summary: | 碩士 === 國立臺灣大學 === 農業工程學系 === 84 === The water demands in Taiwan increased rapidly from the growth
of population and commercial and industrial activities.
Although the average annual precipitation are more than 2500mm,
water supply shortage may occur because the spatial and
temporal distribution is not uniform. The pressure for water
resources allocation are much urgent than ever because new
water supply sources are difficult to be developed. Water right
of the agriculture sector are temporally used by the municipal
and industrial sectors during the drought years according to
the water law. Compensation are then made to the agriculture
sector by the municipal and industrial sectors. Paddy is the
major crop in Taiwan. Decisions are to be made during the
drought that how much of the paddy area should be recessed for
certain amount of water to be reallocated to other sectors.
There is no related knowledge of how much water can be released
from the partial recess of the paddy farm. The objective of
this study is to find out the relationship between the
percentage of land recess and the percentage of released water
using a Monte Carlo simulation technique. A simulation model
was built for the water management of an irrigation command
area. Parcels in the command area were numbered and random
numbers were generated for simulation of land recess. The
simulation model was then executed and compute the water that
can be released. It is found that the range of the percentage
of released water is about 5%. For example, the percentage of
released water may be somewhere between 46% and 53% if 50% of
the area is recessed. The variation is not very significant
because that most of the canal in Taiwan are lined and most of
paddy farm are relatively uniformed in soil texture (paddy are
grew in fields with less percolation potential).
|
|---|