牡丹江市土地利用适宜性评价
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黑龙江省教育厅科学技术研究项目"寒地山区退耕还林前后土地生态安全演变"(12541037);寒地黑土利用与保护省级重点实验室开放基金项目(ht2012-09)


Assessment on Land Use Suitability of Mudanjiang City
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    [目的] 评价牡丹江市退耕还林地区土地利用效益,对土地利用结构进行优化,为该区进一步土地开发利用及结构调整提供科学依据与支持。[方法] 选取牡丹江市的坡度、高程、土壤类型、水资源系数、降水量和≥10℃积温6个因素作为评价因子,通过模型计算及GIS空间分析,得出研究区内宜农用地、宜林用地适宜性等级。[结果] 处于适宜级以上的农业用地总面积约9300 km2,占研究区面积的22.9%,主要分布于坡度小于5°、海拔500 m以下的区域;处于适宜级以上的林业用地总面积约28000 km2,占研究区总面积的69.0%,主要分布于海拔高、坡度大、多水土流失的山区丘陵地带。[结论] 土地利用现状分析结果表明,在农林交错地带存在过度退耕、造成耕地浪费的现象。

    Abstract:

    [Objective] The land use benefits from grain-for-green project in Mudanjiang City were evaluated, and we expected to propose some scientific bases for rational land exploitation and structural adjustment of land use.[Methods] Based GIS spatial analysis, six natural indicators, including slope gradient, elevation, soil type, coefficient of water resource, precipitation, and ≥10℃ accumulated temperature were calculated. They were used as evaluation factors to assess the suitability of lands in Mudangjiang City for cultivated land and forestry land.[Results] The results showed that the land area assessed suitable to cultivation was about 9300 km2, accounting for 22.9% of the study area. The slope gradient of these lands is below 5ånd the elevation is below 500 m. Lands assessed with forestry suitability grade had about 28000 km2, covered 69.0% of the study area and mainly located at mountainous region, where both the elevation and slope gradient are great and the soil is vulnerable and erosive.[Conclusion] In forest-agriculture zone, present land use exists a phenomenon of overly returning farming land to forestry. This might cause the waste of suitable cultivation lands.

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马泉来,高凤杰,侯大伟,刘洋,姜晗,韩文文,单培明.牡丹江市土地利用适宜性评价[J].水土保持通报,2015,35(6):285-290

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  • 收稿日期:2014-08-21
  • 最后修改日期:2014-09-26
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  • 在线发布日期: 2016-04-05
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