شناسایی تعارض کاربری‌ها بر مبنای مدل تناسب اراضی در مجموعه شهری مشهد

نوع مقاله : پژوهشی - کاربردی

نویسندگان

1 گروه توسعه پایدار شهری منطقه‌ای جهاد دانشگاهی مشهد، ایران

2 گروه برنامه‌ریزی شهری، دانشگاه تهران، تهران، ایران

10.22059/jurbangeo.2023.349094.1738

چکیده

هنگامی‌که نیازهای چندگانه چندین کاربری زمین در فضا همپوشانی داشته باشند و نتوان آن‌ها را هماهنگ کرد، احتمال ایجاد تعارض اراضی وجود دارد. توسعه شهرنشینی در محدوده مجموعه شهری مشهد فضاهای زیست‌محیطی با کیفیت را اشغال کرده و منجر به تکه‌تکه شدن اراضی کشاورزی و زیست‌محیطی و کاهش کیفیت آن‌ها شده است. شناسایی و حل تعارضات کاربری زمین‌برای استفاده منطقی از منابع زمین و دستیابی به پایداری ضروری است. این پژوهش به بررسی تعارضات اراضی از منظر تناسب کاربری پرداخته است. بدین منظور تناسب اراضی با استفاده از روش تحلیل ارزیابی چندمعیاره با استفاده از شاخص‌های طبیعی، مکانی، برنامه‌ریزی و منابع آبی برای سه کاربری کشاورزی، اکولوژیکی و مسکونی در سه‌طبقه زیاد، متوسط و کم ارزیابی‌شده و بر اساس ترکیب تناسب سه کاربری با استفاده از مدل پیشنهادی، شدت تعارضات در سه‌طبقه و نوع تعارضات در دوازده طبقه تشخیص داده‌شده است. در ادامه احتمال تغییرات اراضی با توجه به نوع و شدت هر تعارض بیان‌شده است. در مجموع نتایج نشان می‌دهد: درصد مساحت اراضی با تناسب بالای اکولوژیکی نسبت به دو کاربری دیگر کمتر بوده است، همچنین تناسب اراضی اکولوژیک از مرکز محدوده به سمت پیرامون با افزایش ارتفاع بیشتر شده و تناسب اراضی برای کاربری مسکونی با دور شدن از شهرها و جاده‌ها کاهش پیدا می‌کند، بیشترین درصد اراضی مجموعه شهری مشهد در معرض تعارض بالقوه و با شدت متوسط تعارض قرار دارد، بیشترین نوع تعارضات مربوط به دو نوع تعارض شدید و متوسط اراضی کشاورزی و مسکونی بوده است.

کلیدواژه‌ها

عنوان مقاله [English]

Land Use Conflict Identification Based on Land Use Multi-Objective Suitability Evaluation in Mashhad Region

نویسندگان [English]

  • Hossein Aghajani, 1
  • farnaz sarkari 2
1 Department of Regional Sustainable Urban, Academic Center for Education, Culture and Research, Mashhad, Iran
2 Department of Urban planning, College of Fine Arts, University of Tehran, Tehran, Iran
چکیده [English]

ABSTRACT
Land conflicts are possible when the multiple needs of several land-uses overlap in space and cannot be coordinated. Within the Mashhad urban complex's boundaries, urbanization has taken up quality environmental spaces and resulted in the fragmentation and degradation of agricultural and environmental resources. The optimal use of land resources and sustainability depends on locating and resolving land use conflicts. This study looked into land-use conflicts from the perspective of land-use suitability. For this purpose, using the multi-criteria evaluation analysis, using natural, spatial, planning, and water resources indicators, land suitability for three agricultural, ecological, and residential uses was evaluated in three categories high, medium, and medium and low. Moreover, based on the combination of the suitability of three land-uses using the proposed model, the intensity of conflicts in three classes and the type of conflicts in twelve classes have been detected. In the following, the possibility of land changes is stated according to the type and intensity of each conflict. The results show that the percentage of land area with high ecological suitability has been lower compared to the other two land-uses. Also, the suitability of ecological land from the center of the area to the periphery increases with the increase in height. Land suitability for residential use decreases as it moves away from cities and roads. The largest percentage of land in Mashhad urban complex is exposed to potential conflict with medium intensity of conflict; the most types of conflicts related to the severe and moderate conflict were agricultural and residential lands. The largest percentage of land in Mashhad urban complex is exposed to potential conflict with medium intensity; the most types of conflicts related to two types of severe and moderate conflict were agricultural and residential lands
Extended Abstract
Introduction
Land Use conflicts due to disorder development and misuse of land have been one of the negative consequences of rapid urbanization and industrialization. Early studies of land use conflict often used qualitative methods for analysis. Currently, the issue of land-use conflict has received more attention, and more advanced methods have been developed to identify and quantify it. The multi-criteria suitability evaluation model is a widely used method of recognizing land use conflicts. Even though many domestic types of research have been conducted regarding land-use suitability, there needs to be more research on the issue of land use conflicts at the regional level in Iran. Taking the Mashhad region, the main goal of this research is to identify the conflicts between ecological, agricultural, and construction land based on a multi-criteria suitability evaluation. Land use conflict in this research is interpreted as if a plot is only suitable for a single function of land use; no land use conflict occurs. However, potential land-use conflict will arise when a plot is suitable for multiple land use functions. To achieve the research goal, we 1) constructed a multi-criteria suitability evaluation for ecological, agricultural, and construction land and 2) identified the types, levels, and distribution of potential land use conflicts.
 
Methodology
To identify land use conflicts, 1) this paper constructed the index systems of suitability evaluation of three land-use categories; 2) the analytic hierarchy process was used to determine the weight of each evaluation factor and index; 3) all factors were reclassified from high to low in five levels and obtained a score of 100, 80, 60, 40, 20; 4) Linear weighting method was exerted to calculate the total score of each evaluation unit; 5) Natural breakpoint method was used to classify the suitability level of each land-use, 6) an empirical model carried out to identify land-use function conflict zones and land use function conflict degree.
 
 
Results and discussion
The results show that the spatial distribution of land suitability for ecological and residential land-uses has followed a specific spatial alcove. Land suitability for ecological land-use has increased from the center of the area (Mashhad metropolis) to the east and west with the increase in height and moving away from existing cities and roads. Conversely, land suitability for residential use has increased from the surrounding area to the interior.
Regarding quantity, 86% of the area in Mashhad metropolitan city is at risk of potential conflicts. In this area, moderate conflict intensity is the most widely distributed one. The highest conflict intensity was related to moderate conflict intensity, with 62.7%. These high-potential conflict areas account for 23.4% of the total area, which will probably change into actual conflict. The agricultural-construction land conflict is the most widely intense conflict, which forms 18.5%. This type of conflict mostly occurred in the middle of the area and near Mashhad, Targaba, Shandiz, Chenaran, and Golbahar. In this type of conflict, agricultural lands are more likely to be converted into residential, industrial, and construction lands. Another type of extreme conflict ranked next in terms of extent is the conflict between agricultural and ecological land-use, which includes 4.5% of the land. This type of conflict is in parts of the surrounding areas, including the heights of Hezar Masjid and Binaloud. The possibility of converting these lands to agricultural land-use is very high. 12.9% of the grounds are known to be free of conflicts. These lands are only suitable for single land-use. Most of these lands are related to the dominance of construction lands (11.9%). The low conflict between the land-uses, which is the overlapping of the bare suitability area of ecological, agricultural, and construction land on each other, has rarely existed.
 
Conclusion
Identifying potential land conflicts for predicting the direction of future land-use development and providing appropriate policies is a crucial issue that has attracted much attention worldwide. This research was done to identify land-use conflicts based on land suitability.
For this purpose, land suitability for three agricultural, ecological, and residential uses was obtained using a multi-criteria evaluation method based on natural, spatial, management, and water resources indicators. Land-use suitability is divided into three highly suitable, moderately suitable, and barely suitable areas. Then, by overlaying the three classes of each land use based on the proposed model, we obtained the type and the intensity of conflicts. The intensity of conflicts was obtained in three categories as severe, moderate, and non-conflict and the type of land conflicts were obtained in 12 categories, and the possibility of land use change in the future was predicted based on the intensity and type of existing conflicts.
This research has limitations due to the unavailability of data, especially data related to water resources and population data, which may have influenced the results of land suitability. It is suggested that future researchers use more complete data to investigate land conflicts based on the land suitability model. Also, this research studied the conflicts based on the land suitability model, which has been one of the widely used methods for identifying land conflicts in studies; however, it is possible to use other methods, such as investigating land conflicts from the perspective of geography or environment.
 
Funding
There is no funding support.
 
Authors’ Contribution
All of the authors approved the content of the manuscript and agreed on all aspects of the work.
 
Conflict of Interest
Authors declared no conflict of interest.
 
Acknowledgments
We are grateful to all the scientific.

کلیدواژه‌ها [English]

  • Ecological- Agricultural
  • Construction Space
  • Land-use Conflict
  • Multi-Criteria Evaluation System
  • Suitability Evaluation
  • Mashhad

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پژوهش‌های جغرافیای برنامه‌ریزی شهری
دوره 11، شماره 1
فروردین 1402
صفحه 213-232

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