Demarcating of Permanent Prime Farmland for Synergy of Farmland Protection and Urban Expansion: A Case Study of Wuhan

Hui HUANG; Xinli KE

doi:10.12082/dqxxkx.2020.190414

Journals >Journal of Geo-information Science >Volume 22 >Issue 3 >Page 592 > Article

Journal of Geo-information Science
Vol. 22, Issue 3, 592 (2020)

Demarcating of Permanent Prime Farmland for Synergy of Farmland Protection and Urban Expansion: A Case Study of Wuhan

Hui HUANG and Xinli KE^*

Author Affiliations

College of Public Administration, Huazhong Agricultural University, Wuhan 430070, China

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DOI: 10.12082/dqxxkx.2020.190414 Cite this Article

Hui HUANG, Xinli KE. Demarcating of Permanent Prime Farmland for Synergy of Farmland Protection and Urban Expansion: A Case Study of Wuhan[J]. Journal of Geo-information Science, 2020, 22(3): 592 Copy Citation Text

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Fig. 1. Land-use map of Wuhan in 2015

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Fig. 2. Framework of the permanent prime farmland demarcation

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Fig. 3. Comprehensive quality classification of farmland in Wuhan

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Fig. 4. Permanent prime farmland demarcation based on LESA system in Wuhan

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Fig. 5. Basic map for permanent prime farmland demarcation in Wuhan

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Fig. 6. Permanent prime farmland demarcation in Wuhan based on LANDSCAPE model

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LESA体系	一级指标	二级指标	指标赋值标准					权重
LESA体系	一级指标	二级指标	100	80	60	40	20	权重
耕地质量(LE)	土壤条件	有机质含量	27.10~30.79	24.90~27.1	23.00~24.90	20.90~23.00	16.70~20.90	0.19
		表层质地	壤土	粘壤土	粘土	砂土		0.15
		pH值	6.5~7.5	5.5~6.57.5~8.0	5.0~5.5	4.5~5.0		0.11
	地形条件	坡度	<2	2~10	10~25	≥25		0.12
	地形条件	高程	<31.19	31.19~47.69	47.69~76.57	76.57~161.15	>161.15	0.08
	基础设施条件	灌溉条件	充分满足	基本满足		不满足		0.20
	基础设施条件	排水条件	充分满足	基本满足		不满足		0.15
立地条件(SA)	区位条件	到主干道距离/km	≤0.5	0.5~1.0	1.0~1.5	1.5~2.0	>2.0	0.19
		到水源距离/km	≤0.5	0.5~1.0	1.0~1.5	1.5~2.0	>2.0	0.18
		到居民点距离/km	≤0.2	0.2~0.5	0.5~0.8	0.8~1.2	>1.2	0.23
	空间形态	连片度	P=100(S_i-S_min)/(S_max-S_min)					0.16
	空间形态	形状指数	E=100(E_i-E_min)/(E_max-E_min)					0.24

Table 1. Indexes, assessment methods and weights of permanent prime farmland demarcation in Wuhan City

耕地等级	LESA综合分值/分	耕地面积/km²	比例/%
I	>75	278.40	5.45
II	65~75	1699.32	33.29
III	55~65	2161.47	42.35
IV	45~55	874.77	17.14
V	<45	90.16	1.77

Table 2. LESA comprehensive score statistics and classification of farmland in Wuhan

地类	一般耕地	林地	草地	河流	湿地	城镇建设用地	农村建设用地	未利用地	永久基本农田
面积	197 509	70 359	4995	28 472	129 843	160 000	21 252	256	243 200
城市扩张占用面积	19 372	6873	2928	0	26 373	-	4 181	344	0
新划入的永久基本农田面积	215 360	0	0	0	0	0	0	0	-

Table 3. Results of permanent prime farmland demarcation simulation in Wuhan (hm²)

县域耕地地力等级	LESA方法划定		LANDSCAPE方法划定
县域耕地地力等级	农田面积/hm²	比例/%	农田面积/hm²	比例/%
1	46 515	22.67	45 157	22.58
2	21 464	10.46	21 189	10.59
3	25 622	12.49	25 194	12.60
4	40 367	19.68	36 453	18.22
5	35 544	17.33	34 483	17.24

Table 4. Comparison of quality grade of permanent prime farmland demarcated based on two methods

永久基本农田划分方法	斑块数量/个	平均斑块面积/hm²	破碎度	平均斑块分维数	面积加权平均形状因子
LESA	3072	156.12	1.2566E-06	1.2845	1.2180
LANDSCAPE	1457	317.66	5.9885E-07	1.2473	1.1540

Table 5. Comparison of landscape index of permanent prime farmland demarcated based on two methods

Hui HUANG, Xinli KE. Demarcating of Permanent Prime Farmland for Synergy of Farmland Protection and Urban Expansion: A Case Study of Wuhan[J]. Journal of Geo-information Science, 2020, 22(3): 592

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