中国西部区耕地等别空间分布特征
在总体上把握西部区耕地质量分布特征,对于制定适合西部区耕地质量保护和提升对策意义重大。该文以西部区12省的农用地分等国家级汇总结果为基础,分析了西部区耕地等别在空间上的分布特征。研究结果表明,西部区耕地等别范围为4~15等,平均等别为11.2等,与全国总体水平相比,耕地等别总体偏低;西部各省耕地等别差异明显,广西、四川、重庆等南部省份等别较高,等别集中在6~10等,甘肃、内蒙、青海等北部省份等别较低,集中在10等以后;从土地利用分区来看,西南区的耕地等别高于西北区和青藏区;从标准耕制度分区来看,各一级指标区间耕地质量分布差异明显,华南区、江南区、四川盆地区等地区耕地等别较高,青藏高原、内蒙古高...
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| Published in | 农业工程学报 Vol. 28; no. 22; pp. 1 - 7 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国农业大学资源与环境学院,北京100193
2012
国土资源部农用地质量与监控重点实验室,北京100193%中国农业大学资源与环境学院,北京,100193 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1002-6819 |
| DOI | 10.3969/j.issn.1002-6819.2012.22.001 |
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| Summary: | 在总体上把握西部区耕地质量分布特征,对于制定适合西部区耕地质量保护和提升对策意义重大。该文以西部区12省的农用地分等国家级汇总结果为基础,分析了西部区耕地等别在空间上的分布特征。研究结果表明,西部区耕地等别范围为4~15等,平均等别为11.2等,与全国总体水平相比,耕地等别总体偏低;西部各省耕地等别差异明显,广西、四川、重庆等南部省份等别较高,等别集中在6~10等,甘肃、内蒙、青海等北部省份等别较低,集中在10等以后;从土地利用分区来看,西南区的耕地等别高于西北区和青藏区;从标准耕制度分区来看,各一级指标区间耕地质量分布差异明显,华南区、江南区、四川盆地区等地区耕地等别较高,青藏高原、内蒙古高原及长城沿线区、东北区的耕地等别较低;同一指标区内,耕地复种次数越多,等别越高,灌溉水田或水浇地的等别总体高于旱地,海拔低的耕地等别高于海拔高的耕地等别;西部区的耕地等别分布特征表明,优先保护复种指数高的耕地,相同复种指数的优先保护水浇地和水田。该研究为制定西部区耕地空间布局优化、质量提升对策提供依据。 |
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| Bibliography: | 11-2047/S land use, classification, optimization, arable land, land evaluation, western region of China Kong Xiangbin, Zhang Qingpu(1. College of Resources and Environmental Sciences, China Agricultural University, Beijing 1 O0193, China; 2. Key Laboratory for Farmland Land Quality and Monitoring of National Ministry of Land Resources, Beijing 100193, China) Understanding the distribution characteristics of arable land grade in the Western China is significant to make the scientific decision base for the use and improvement in arable land quality. In this study, the distribution characteristics of the arable land grade in the Western China including 12 provinces were analyzed based on the accomplishments of cultivated land classification in China. The results showed that the average arable grade was 11.2 and ranged from 4 to 15, compared with the national level, which was relatively lower. There was a great gap for arable land grade among the different provinces. The arable land grade in the southern provinces s |
| ISSN: | 1002-6819 |
| DOI: | 10.3969/j.issn.1002-6819.2012.22.001 |