中国省域耕地集约利用态势与驱动力分析

doi:10.11821/dlxb201407003

Abstract

Abstract:

The aim of this study is to establish several important factors representing the land-use intensification in the cultivated land (denoted by CII) using a multi-dimensional approach for achieving realistic and practical cultivated land use policies. For this reason, the theoretical framework was firstly built to explain the changes of land-use intensification in the cultivated land, and then the variables and index were further developed for characterizing the dynamic trends and driving forces of the land-use intensification in the cultivated land at provincial level. Results indicate that the extent of CII obviously increased during the period from 1996 to 2008 due to the extensively use of fertilizers, machinery and pesticide, the increased labor and capital input as well as the intensified land use. Moreover, the principal component regression results show that the productivity of cultivated land, the economic benefits of cultivated land, the labor productivity and the land use conversion are the main factors affecting the village development. The first three factors play a positive role while the last one produces a negative effect on the land-use intensification in the cultivated land. According to these results, main policies for sustainable intensification in cultivated land are formulated. Firstly, the sustainable pathways for intensification should be adopted to reduce the unsustainable uses of chemical fertilizer, agricultural chemicals and etc. Secondly, the condition for agricultural production should be further improved to increase the cultivated land productivity. Thirdly, it is necessary and helpful for improving labor productivity and land use efficiency from the viewpoint of speeding up the cultivated land circulation.

Key words: cultivated land, land-use intensification, spatial pattern, factors, China

Guogang WANG, Yansui LIU, Yangfen CHEN. Dynamic trends and driving forces of land-use intensification in the cultivated land of China[J].Acta Geographica Sinica, 2014, 69(7): 907-915.

Figures/Tables 8

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评价指标	计量方法	指标描述	功效
劳动力投入 (V₁)	劳动力/耕地面积	劳动力投入水平	+
化肥投入 (V₂)	化肥折纯量/耕地面积	化肥投入强度	+
农药投入 (V₃)	农药使用量/耕地面积	农药投入强度	+
机械投入 (V₄)	机械动力/耕地面积	机械使用水平	+
地均农业支出 (V₅)	农业支出/耕地面积	资金投入水平	+
复种指数 (V₆)	农作物总播种面积/耕地面积	耕地利用强度	+
相对撂荒指数% (V₇)	见注释	耕地节约度	-
耕地变化率 (V₈)	(耕地末期面积-基期面积)/耕地末期面积	耕地转型度	-
有效灌溉面积比重 (V₉)	有效灌溉面积/耕地面积	灌溉基础设施情况	+

公因子	旋转提取值		解释变量
公因子	特征根	累计方差%	V₁	V₂	V₃	V₄	V₅	V₆	V₇	V₈	V₉
1	2.24	24.85	0.57	0.87	0.79	-0.08	0.04	0.64	-0.05	-0.03	0.3
2	1.94	46.41	0.18	-0.07	0.4	0.89	0.04	0.47	0.01	-0.04	0.86
3	1.52	63.32	0.68	0.03	0.25	0.12	-0.92	0.35	0.03	-0.09	-0.06
4	1.08	75.33	-0.12	-0.12	0.04	-0.1	-0.07	-0.21	0.99	-0.05	0.11
5	1.05	87.00	0.17	-0.07	0.03	-0.02	0.2	0.13	-0.05	0.98	-0.02

变量	Y	X₁	X₂	X₃	X₄	X₅	X₆	X₇	X₈	X₉
Y	1
X₁	0.605^**	1
X₂	0.147^*	0.317^**	1
X₃	-0.125*	-0.477**	-0.178**	1
X₄	0.408**	-0.017	0.148**	0.545**	1
X₅	0.529**	-0.276**	-0.1	0.689**	0.625**	1
X₆	0.643**	0.160**	0.049	0.275**	0.563**	0.038	1
X₇	-0.469**	-0.358**	-0.323**	0.347**	-0.058	0.107	-0.052	1
X₈	0.01	-0.403**	-0.367**	0.516**	0.390**	0.343**	0.233**	0.454**	1
X₉	0.580**	0.764**	0.262**	-0.182**	0.210**	-0.106	0.458**	-0.151**	0.046	1

公因子	X₁	X₄	X₅	X₆	X₇	X₉
1	0.925	0.055	-0.13	0.188	-0.148	0.913
2	-0.134	0.758	0.963	0.072	0.025	0.016
3	-0.015	0.568	-0.046	0.962	-0.018	0.306
4	-0.242	-0.078	0.075	-0.005	0.985	0.011

Dynamic trends and driving forces of land-use intensification in the cultivated land of China

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