SOIL EROSION AND IMPACT ON RECREATIONAL RESOURCES IN THE SHYNGYRLAU BASIN, WESTERN KAZAKHSTAN: A MULTI-ANALYTICAL ASSESSMENT

Q1 Social Sciences

Geojournal of Tourism and Geosites Pub Date : 2023-12-29 DOI:10.30892/gtg.514spl22-1177

Nurgul Y. Ramazanova, E. Turyspekova, Kalibek Assylbekov, Zhanar O. Ozgeldinova, Anzhela Akhmedova, Aliya Ayapbekova, Talant Samarkhanov, Janat Khamzaeva

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引用次数: 0

Abstract

Over the past decades, water erosion has increased significantly in the Shyngyrlau River basin. Recreational development, haphazard construction and operation of roads have led to increased water erosion and the formation of numerous linear erosion forms. Erosion reduces the natural resource status of the region. Water erosion develops in most cases along roads laid along the thalwegs of the ravine-hollow network. The light substrate along with sparse vegetation cover (the sparseness is aggravated by intensive grazing) predetermine its rapid development. Water erosion is an acute problem arising from the present climate change, agricultural intensification and diverse forms of anthropogenic land degradation. Assessment of present and potential soil erosion is useful for landscape preservation as well as development planning. Multi-analytical modeling can provide a quantitative and consistent estimation of soil erosion and sediment yield under locally specific environmental conditions. The soil loss model, Revised Universal Soil Loss Equation (RUSLE), integrated with GIS, has been used to estimate soil loss in the Shyngyrlau Basin (a left-bank tributary of the Ural River, NW Kazakhstan). The RUSLE model is based on remote sensing and field data; erosion probabilities were determined using GIS. The percentage ratio of the soil loss in the Shyngyrlau River basin shows erosion variation of 0.001–2.47 t/ha/yr. The degree of erosion increases with the length of the slope. A new factor Chip curvature (Cu factor), defining the accuracy of the soil loss results, was defined. According to this factor, soil erosion in the study area is 0.007–2.48 t/ha/yr within the low erosion class. The lowest indicator of the K factor is 0.2 in sandy clay soils used as pasturelands. The highest K factor (0.3) relates to clayey arable soils. The research results add to implementation of new strategies in soil management and conservation practices reducing soil erosion in the Shyngyrlau Basin. Both climate and anthropogenic factors are seen behind the activated ground erosion. The development of forms of water erosion leads to a violation of the integrity of modern natural complexes of the West Kazakhstan region, which significantly reduces their stability and recreational potential.

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土壤侵蚀及对哈萨克斯坦西部羞恩吉劳盆地娱乐资源的影响：多分析评估

在过去的几十年里，辛吉劳河流域的水土流失明显加剧。休闲开发、道路的随意修建和运营导致水蚀加剧，并形成了许多线状侵蚀形态。水土流失降低了该地区的自然资源状况。在大多数情况下，水土流失都发生在沿沟谷网络河谷铺设的道路沿线。轻质的基质和稀疏的植被（密集的放牧加剧了植被的稀疏）注定了水土流失的快速发展。水土流失是当前气候变化、农业集约化和各种形式的人为土地退化造成的一个严重问题。对目前和潜在的水土流失进行评估有助于景观保护和发展规划。多分析模型可以对当地特定环境条件下的土壤侵蚀和沉积物产量进行定量和一致的估算。土壤流失模型 "修订通用土壤流失方程（RUSLE）"与地理信息系统相结合，用于估算 Shyngyrlau 盆地（哈萨克斯坦西北部乌拉尔河左岸支流）的土壤流失量。RUSLE 模型基于遥感和实地数据；侵蚀概率则使用地理信息系统确定。辛吉劳河流域土壤流失的百分比率显示，侵蚀变化为 0.001-2.47 吨/公顷/年。侵蚀程度随着斜坡长度的增加而增加。我们定义了一个新系数 Chip 曲率（Cu 系数），用于确定土壤流失结果的准确性。根据该因子，研究区域内低侵蚀等级的土壤侵蚀量为 0.007-2.48 吨/公顷/年。在用作牧场的砂质粘土中，K 系数的最低指标为 0.2。最高的 K 系数（0.3）与粘性耕地土壤有关。这些研究成果有助于实施新的土壤管理战略和保护措施，减少辛格劳盆地的土壤侵蚀。地表侵蚀加剧的背后既有气候因素，也有人为因素。水蚀形式的发展导致西哈萨克斯坦地区现代自然综合体的完整性受到破坏，大大降低了其稳定性和娱乐潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Geojournal of Tourism and Geosites Social Sciences-Geography, Planning and Development

CiteScore

3.90

自引率

0.00%

发文量

156

审稿时长

24 weeks

期刊介绍： GeoJournal of Tourism and Geosites is a scientific publication, with an international status. The Journal is issued under the aegis of the University of Oradea, Department of Geography, Tourism and Territorial Planning, Territorial Studies and Analysis Centre (Romania) and the Academy of Physical Education and Sports from Gdańsk, Faculty of Tourism and Recreation (Poland). At the initiative of an international group of specialists, based on an editorial and scientific committee with a wide international coverage, including leading figures in the field, in 2008 was published the first English issue of the GeoJournal of Tourism and Geosites. The printable format (2-3 issues per year) is supported by the on-line version. The journal aims to publish relevant contributions in tourism, geosites and other areas whose analysis is related to these fields, standing out through originality and scientific contribution to the knowledge and development of this area. An important objective is to promote academic and applied research based on interdisciplinarity with a complex local and global approach.