干旱区生态环境知识资源中心(Arid): 干旱区农户作物选择及农作物空间格局变化模拟研究以甘肃省高台县为例

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	干旱区农户作物选择及农作物空间格局变化模拟研究以甘肃省高台县为例
其他题名	Household Crop Choices and Crop Spatial Patterns in Arid Gansu Province
	郭玲霞 1; 张勃 1; 封建民 2; 董莉丽 2
来源期刊	资源科学
ISSN	1007-7588
出版年	2014
卷号	36 期号:10 页码:2194-2202
中文摘要	通过对甘肃省黑河流域中游下段的高台县60个村578户农业户进行参与式调查,采用决策树分类和空间分析方法,探索干旱区农户作物选择的影响机制,模拟不同水资源供应情景下的作物空间格局变化。结果表明:①影响作物选择的首要因素是作物所需的灌溉次数,其次是预期收入、预期成本以及灌区;②作物种植在空间上存在差异,水资源相对充足的灌区种植结构单一,以收益较高的制种玉米为主,山区及灌溉用水不足的灌区,以低耗水作物和套种模式为主;沿黑河干流向下游套种比例逐渐增多,高耗水作物逐渐减小;③情景模拟结果显示,若水资源供给减少,高耗水作物种植比例将会下降,中、低耗水的作物种植比例将会增加;大田种植减少,套种模式增加。
英文摘要	The crop choice behavior of households is essential to improving water resource usage, management, and coordinating water and land use in water resource shortage areas. From the perspective of water resource constrains,we analyzed household crop choice behavior and crop spatial patterns. A Participatory Rural Assess survey was performed in Gaotai,Gansu, China, located on the last part of the middle section of Heihe River. The survey data covered 578 households and eight irrigation districts. A decision tree model was built to study crop choice mechanisms and spatial analyses were explored to simulate crop spatial pattern changes based on two water supply scenarios. We found that the capital factors influencing household crop choice are the times of irrigation crop required, followed by the expected income and expected cost of crops; irrigation district is also an important factor. Irrigation districts with relatively abundant water hold a single planting structure and often plant higher yield crops such as corn. Irrigation districts with less water such as mountain areas often have diverse crop types and mainly plant crops of lower water needs. The proportion of intercropping is gradually increasing and high water consumption crops gradually decreasing. Simulation showed that due to falling surface water and ground water supplies,the proportion of high water consumption crop declines while middle and low water consumption crops increase. Overall,the mode is changing from single crop to intercrop planting.
中文关键词	水资源 ; 农户作物选择 ; 空间格局 ; 决策树 ; 甘肃省高台县
英文关键词	water resources crop choices of households crop spatial pattern decision tree Gaotai County in Gansu Province
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MULTIDISCIPLINARY SCIENCES
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:5254919
来源机构	西北师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232310
作者单位	1.西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国; 2.咸阳师范学院旅游与资源环境学院, 咸阳, 陕西 712000, 中国
推荐引用方式 GB/T 7714	郭玲霞,张勃,封建民,等. 干旱区农户作物选择及农作物空间格局变化模拟研究以甘肃省高台县为例[J]. 西北师范大学,2014,36(10):2194-2202.
APA	郭玲霞,张勃,封建民,&董莉丽.(2014).干旱区农户作物选择及农作物空间格局变化模拟研究以甘肃省高台县为例.资源科学,36(10),2194-2202.
MLA	郭玲霞,et al."干旱区农户作物选择及农作物空间格局变化模拟研究以甘肃省高台县为例".资源科学 36.10(2014):2194-2202.