河北省怀来县宜耕未利用地开发适宜性及生态风险评价

发布时间：2018-05-10 22:35

本文选题：未利用地 + 适宜性评价　；参考：《水土保持研究》2017年04期

【摘要】：未利用地作为重要的耕地后备资源,研究其开发适宜性及开发生态风险是实现土地可持续利用的重要举措,对保障我国粮食安全、实现经济发展和生态文明建设均具有重要意义。在此背景下,以河北省怀来县为例,利用综合指数法对其他草地、裸地和内陆滩涂等未利用土地进行开发适宜性评价及开发生态风险评价,进而解决开发时序之间的权衡问题。研究表明:(1)其他草地宜耕开发可分为3个等级,呈中部高南北低趋势,主要为三级宜耕其他草地,面积为29 027.84hm~2,占全县其他草地面积的59.75%;(2)裸地宜耕开发可分为2个等级,集中分布在县中北部,主要为二级宜耕裸地,面积为1 994.39hm~2,占全县裸地面积的93.35%;(3)内陆滩涂全部为一级适宜性,面积为7 658.19hm2,分布在县中部官厅水库周围;(4)生态风险区可分为5级,呈两端生态风险高中间生态风险低的格局,主要为高生态风险区,面积为20 975.10hm~2;(5)高生态风险区和中高生态风险区应以生态保护为主,中生态风险区尽量不用作第一开发时序用地,低生态风险区和中低生态风险区可用作首选开发用地。
[Abstract]:As an important reserve resource of cultivated land, the study of its suitability and ecological risk is an important measure to realize the sustainable use of land, which can guarantee the food security of our country. It is of great significance to realize economic development and ecological civilization construction. Under this background, taking Huailai County of Hebei Province as an example, the comprehensive index method is used to evaluate the suitability and ecological risk of exploitation of unused land, such as other grasslands, bare land and inland tidal flat, so as to solve the tradeoff problem between development time series. The results showed that the other grasslands could be divided into three grades, showing a trend of high, north, south and low in the middle of the area, mainly in the third grade, with an area of 29 027.84 hmm2, accounting for 59.75% of the other grassland areas in the county. The suitable tillage development of the bare land could be divided into 2 grades. It is concentrated in the central and northern part of the county, mainly in the second grade suitable for tillage and bare land, with an area of 1 994.39 hmm2, which accounts for 93.3535 / 3 of the bare land area of the whole county. The inland tidal flat is all of the first grade suitability, with an area of 7 658.19 hm2.It can be divided into 5 grades in the ecological risk areas around Guanting Reservoir in the central county. There is a pattern of high ecological risk and low intermediate ecological risk at both ends, which is mainly high ecological risk area with an area of 20 975.10 h. The area of high ecological risk area and middle and high ecological risk area should be mainly ecological protection, and the middle ecological risk area should not be used as the first development time series land as far as possible. Low-ecological risk areas and low-ecological risk areas can be used as the first choice of development land.
【作者单位】：河北农业大学农村发展学院;河北农业大学国土资源学院;国土资源部环渤海土地利用河北沧州野外基地;
【基金】：河北省国土资源厅”典型地区未利用地调查与多宜性评价及利用对策”(2014995161) 河北农业大学中青年骨干教师境外研修项目
【分类号】：F323.211;X826

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