Page 149 - Çevre Şehir ve İklim Dergisi İngilizce - Özel Sayı

İskender Demirtaş - Günay Erpu

The RUSEL-P factor includes the control practices, which decrease the
erosion potential, with their effects on the erosion forces that are applied to the
soil surface by the drainage network, surface flow density, speed and current
(Renard et al., 1991). RUSLE-P displays the soil loss rate based on the practices
to prevent erosion. To control erosion, a variety of preventive practices such
as contouring, pruning and terracing are done (Park et al., 2005). The human
impact on soil erosion control is significant from the perspective of its inclusion
in the assessment of soil erosion risk, but there is not any global reference
because erosion control is a local practice in general (Yang et al., 2003).
The RUSLE-based erosion assessments have been made in order to plan
Sustainable Land Management (SLM) and rehabilitation practices in small dam
basins by using the practice factors of product management and support as
decision criteria (Madenoğlu et al., 2018; Pınar et al., 2018). By using the RUSLE
model, the General Directorate of Combating Desertification and Erosion
published The Water Erosion Atlas, which provides statistical data about soil
erosion in 25 water basins of Türkiye together with Türkiye’s Water Erosion Map.
In this article, it is assessed that the protection of soil resources to provide
food safety on the province level is important due to the integration of soil
ecosystem function and services due to climate change, land degradation
and desertification. Furthermore, when the study is evaluated in terms of
requirements, national-scale studies involve a dynamic handling of the
changes resulting from data intensity, collection of new data and technological
advancements. The insufficiency of local studies also made software programs
like DEMMS a necessity. With this purpose, to support the decision and policy
development in Türkiye, this article promotes DEMMS, which was developed by
the General Directorate of Combating Desertification and Erosion of the Ministry
of Environment, Urbanization and Climate Change in order to determine the
erosion statistics and severity classes according to land use in Türkiye.

2. Methodology

DEMMS was utilized with the objectives such as data intensity, data process
and the integration of the new data to the system as well as their storage, and
it was integrated with the RUSLE model within the scope of these objectives.
The integration of DEMMS with the RUSLE technology represents a critical
development, which enables more sensitive and scalable assessments
between different land use types and geographical regions.
DEMMS, based on DEMMS RUSLE erosion model, (Wischmeier and Smith,
1978; Renard et al., 1997) also determined severity classes by predicting the
potential and real erosion rates for micro and macro river basins at national

136 Journal of Environment, Urban and Climate