International Conference on Climate Change and Forestry, Antalya, Türkiye, 12 - 15 Kasım 2019, ss.290-297
The aim of this paper is to examine torrent problems in the watersheds of Turkey in the context
of a changing world and changing climate, with measures to be taken. Turkey has advantages
and disadvantages in torrent control works.
Disadvantages are: according to climate change scenarios and related publications; the amount
of precipitation has started to decrease. While precipitation amount decreased, a significant
part of the total annual precipitation started to rain torrentially. According to Kantarcı (1983),
agriculture is being carried out on 6.125 million ha of forest land. Land use, according to land capability
classes, has still not been maintained in the 21st century. On the other hand, despite Turkey
not having enough agricultural land, planners have been opening up what there is to settlement, industry, etc.
People are trying to reclaim lost agricultural land from forest land.
Advantages are expansion and/or recovery of forests both with works by OGM and by their
own dynamics and decrease of deforestation as
a result of the migration of the young rural population to cities. This is advantageous in terms
of torrent control in that the upper watersheds begin to be covered with forests. We hope that
increased open mining activities will not interfere with this improvement.
Torrent control works in Turkey should adapt to developments in the world. In this context, within
the framework of classical works in the upper watersheds, bed stabilization by check dams, etc.,
and slope stabilization by terraces, wattle fences,
afforestation, etc., should continue. On the other hand, the filter dams first applied in Denizli
and Rize in Turkey should be constructed in the upstream and middle streams in the other watersheds if necessary.
By this method, the movement of debris consisting of trees, tree pieces,
and stones will be held back by the filter dams and relatively clean water will flow unobstructed
through the lower watershed.
In order to mitigate some negative consequences of climate change, the occupied flood plain in
the lower watersheds should be encouraged to be evacuated and, if possible, be converted into
a recreation area and cross-sections of bridges and culverts should be redesigned according to
the Q 500 flow rate.