| 张希彪.黄土高原沟壑区土地结构与土地资源的合理利用研究[J].干旱地区农业研究,2007,(2):190~195 |
| 黄土高原沟壑区土地结构与土地资源的合理利用研究 |
| Study on structure and reasonable utilization of land resource in the gully area of Loess Plateau |
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| DOI：10.7606/j.issn.1000-7601.2007.02.39 |
| 中文关键词: 土地类型 土地资源 土地结构 土地利用 陇东地区 黄土高原 |
| 英文关键词:land style land resource land structure land use Longdong region Loess Plateau |
| 基金项目:国家重点基础研究发展规划项目(2002CB111502)； 中国科学院水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室资助项目(10501-147) |
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| 中文摘要: |
| 从土地类型数量结构、土地质量结构、土地空间结构和土地利用现状结构入手,对黄土高原沟壑区的土地结构及特征进行了分析。结果表明:土地类型以梁峁坡地、沟坡地和沟谷底为主,三者占总土地面积的75.16%;土地总体质量不高。宜草地、宜农地、宜林地面积分别占土地总面积的44.45%、23.47%和18.51%。土地类型的空间分布表现出明显的层状、镶嵌状和空间上的不均匀性;农林牧用地结构为1.5∶1∶2。农地后备资源不足,出现林地退化,草地沙化等现象,土地结构处于极不稳定状态。应通过调整土地利用结构、因地制宜、合理开发等措施,以保证土地结构向好的方向发展。 |
| 英文摘要: |
| Based on the land style quality structure,quantity structure,spatial structure and land use structure,the land structure and its characters in the gully area of Loess Plateau were analyzed.The results indicated: the ridge-projection slope land,gully slope land and groove land were the main land use style,which account for 75.16% of the total land area;The total land quality is not very good,the grassland,farmland and forestland account for 44.45%,23.47% and 18.51% of the total land area,respectively;The spatial distribution of land style showed stratification,inlaid and non-uniformity;The ratio among farmland,forestland and graze land was 1.5∶1∶2.The land structure was very instable because of farmland resource shortage,forestland degradation and pastureland desertion,so the regulation of land use structure and reasonable development are very necessary for ensuring the sustainable development of the land structure. |
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