سال 1399 مبارک باد

             

آمایش سرزمین

آمایش سرزمین گزینه ای برای افزایش پایداری توان سرزمینی است

آمایش سرزمین

آمایش سرزمین یک استراتژی برای رسیدن به توسعه ای هرچه عادلانه تر و انسانی تر است

آمایش سرزمین

در نگاه آمایشی پایداری محیط زیست و بازگشت به طبیعت اهمیت خواهد یافت

Strategic spatial analysis of urban greenbelt
plans in Mashhad city, Iran
Neda Kardani‑Yazd
1
, Nadia Kardani‑Yazd
2
and Mohammad Reza Mansouri Daneshvar
3*
Abstract
Background: Greenbelt, known as the most restrictive form of urban containment policy, is a geographical bound‑
ary around a city or urban region to prevent urban sprawl. In the present study, the urban greenbelt plans were
investigated with spatial, temporal, and statistical attitudes in Mashhad city, Iran. Spatial and temporal data analyses
were carried out in ENVI, and GIS programs based on satellite imageries in addition to the expert analyzes of SWOT
(strengths, weaknesses, opportunities, and threats) and QSPM (quantitative strategic planning matrix) matrixes to
achieve the key strategies concerning the revitalization of a new greenbelt plan.
Results: Four temporal sequences of Landsat imageries were extracted for 1988, 1998, 2008, and 2018 to classify
the expansion of real estates and urban sprawl. The results showed that the legal greenbelt plan failed after 10 years
because the status of greenbelt in 2018 revealed nearly of occupation by sprawl expansion over than 20%. Then a
new greenbelt plan was proposed around the city. Based on the lowest value of the environmental change index
(ΔY
i
), with an average of 0.14, the proposed greenbelt plan will demonstrate an optimum efciency in the future time
intervals (2030–2050).
Conclusions: Therefore, expert analyzes of SWOT and QSPM matrixes were shown that the essential weakness of
greenbelt planning in the Mashhad city depends on the lack of a legal mechanism to conserve the greenbelt bound‑
aries. Therefore, the total sum score of external factor’s matrix with the value of 2.65 demonstrated that the oppor‑
tunities for greenbelt planning in the study area are more efective than threats in the study area. Ultimately, six key
strategies in greenbelt planning were presented to achieve a general equilibrium through future urban development.
Keywords: Greenbelt planning, Urban sprawl, Satellite imageries, Geographic information system (GIS), Mashhad City

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