干旱区生态环境知识资源中心(Arid): 干旱区耕地景观格局碎化特征及社会经济驱动因素分析

Arid

	干旱区耕地景观格局碎化特征及社会经济驱动因素分析
其他题名	Characteristics of Arable Land Fragmentation and the Socioeconomic Drivers in the Arid Area
	张瑜 1; 王天巍 1; 蔡崇法 1; 李朝霞 1; 赵卿 1; 唐晓霏 2
来源期刊	水土保持研究
ISSN	1005-3409
出版年	2016
卷号	23 期号:4 页码:179-184
中文摘要	为探讨干旱区耕地碎化特征与驱动机制,基于特克斯县1990年、1998年、2000年、2003年、2006年、2011年的遥感影像,利用遥感与GIS技术,分析了研究区20a来耕地景观格局变化特征。并运用偏最小二乘回归模型探讨了耕地景观格局指数变化的驱动因素。结果表明:1990-2011年,研究区斑块碎化程度在逐步增大,斑块密度呈现增加的趋势;平均最近邻体距离与面积加权平均分维数在2000年前后均呈现出先减小后增大的特点,且两者的变化率在1998-2000年和2006-2011年均为正值,在其他阶段则均为负值,而斑块密度变化率的趋势则与之相反。回归模型结果显示,影响耕地碎化的主要因素包括总人口、农业机械总动力、粮食作物产量、油料作物产量等,但在三个模型中,各影响因子作用力大小存在一定差异。人口的增长与城镇化水平的提高,使大量耕地改造为建设用地,从而导致了耕地的碎化。而农业机械化水平的提高促进了耕地的集约化,在一定程度上减小了耕地斑块的孤立程度。
英文摘要	In order to investigate the fragmentation and driving mechanism of arable land in the arid areas,the arable land patterns of Tekes County were analyzed based on the images in 1990,1998,2000,2003,2006 and 2011,using remote sensing and GIS.The driving forces of the change of arable land patterns were identified using the partial least squares regression models.The results showed that the arable land fragmentation was increasing during the study period with the increase of patch density(PD),and both the area-weighted mean patch fractal dimension(AWMPFD)and euclidian mean nearest neighbor distance(MNN)increased and then decreased before and after 2000.The change rates of MNN and AWMPFD were negative during the period from 1998 to 2000 and the period from 2006 to 2011,and positive during the other periods,while PD had the opposite change trend.The results of the regression models indicated that the main driving factors of arable land fragmentation included the total population,the total power of agricultural machinery,grain crop yields,oil-bearing crop yields,while the effects of the variables were different in the three models.Large amount of arable land was replaced by construction land due to the population growth and the rapid urbanization, resulting in the arable land fragmentation.The improvement of agricultural mechanization promoted the intensive use of arable land,which reduced the isolation of arable land patches to some extent.
中文关键词	耕地 ; 景观格局指数 ; 社会经济 ; 偏最小二乘回归
英文关键词	arable land landscape pattern index socioeconomic factors partial least squares(PLS)regression models
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURAL ECONOMICS POLICY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5726350
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235026
作者单位	1.华中农业大学资源与环境学院, 武汉, 湖北 430070, 中国; 2.湖北省测绘工程院, 武汉, 湖北 430074, 中国
推荐引用方式 GB/T 7714	张瑜,王天巍,蔡崇法,等. 干旱区耕地景观格局碎化特征及社会经济驱动因素分析[J],2016,23(4):179-184.
APA	张瑜,王天巍,蔡崇法,李朝霞,赵卿,&唐晓霏.(2016).干旱区耕地景观格局碎化特征及社会经济驱动因素分析.水土保持研究,23(4),179-184.
MLA	张瑜,et al."干旱区耕地景观格局碎化特征及社会经济驱动因素分析".水土保持研究 23.4(2016):179-184.