| 半干旱草原牧区村庄的农田扩张机制 |
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| 引用本文： | 张乐,刘志民.半干旱草原牧区村庄的农田扩张机制[J].应用生态学报,2008,19(5):1077-1083. |
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| 作者姓名： | 张乐 刘志民 |
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| 作者单位： | 1. 中国科学院沈阳应用生态研究所,沈阳,110016;中国科学院研究生院,北京,100039
2. 中国科学院沈阳应用生态研究所,沈阳,110016 |
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| 基金项目： | 国家科技支撑计划
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中国科学院前沿领域研究基金 |
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| 摘 要： | 基于多层线性模型，从田块、单户和村庄3个尺度分析了科尔沁沙地西部半干旱草原牧区村庄的农田扩张机制.结果表明：在选择优质土地用于发展农业上，各住户间没有显著差异；家庭劳动力数量多、户主文化程度高和收入依赖于农牧业的住户更倾向开地种粮，而牲畜数量多的住户开地种粮的愿望较低；玉米的种植主要受限于外部经济因素，而水稻的种植主要受限于当地的自然状况.提高草原牧区的基础教育水平会促进草地向农田的转变，而转移牧区剩余劳动力将会延缓这一过程.
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| 关 键 词： | 土地利用 多层线性模型 回归分析 科尔沁草原 半干旱 草原牧区 村庄 农田 扩张机制 northern China steppe village farmland mechanism 过程 剩余劳动力 转移 转变 草地 教育水平 自然状况 水稻 外部经济因素 玉米 |
| 文章编号： | 1001-9332(2008)05-1077-07 |
| 收稿时间： | 2007-06-08 |
| 修稿时间： | 2007年6月8日 |
Expansion mechanism of farmland at a village in Horqin steppe of northern China. |
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| ZHANG Le,LIU Zhi-min.Expansion mechanism of farmland at a village in Horqin steppe of northern China.[J].Chinese Journal of Applied Ecology,2008,19(5):1077-1083. |
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| Authors: | ZHANG Le LIU Zhi-min |
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| Institution: | Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. zhangle9527@gmail.com |
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| Abstract: | Based on a multilevel model, the expansion mechanism of farmland in Horqin steppe of northern China was studied at field, household, and village levels. The results showed that there was no significant difference among households in reclaiming the steppe. The households with extra labor force and relatively higher basic education tended to reclaim steppe if they lived mainly on cultivation and animal breeding, while those with large livestock number were not favorable for farmland expansion. Corn cultivation was more sensitive to economic situations, while rice planting was more constrained by natural conditions. Therefore, relatively good basic education might favor the conversion of grassland to farmland, while transferring residual labor forces might detain the trend. |
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