缅老泰交界地区刀耕火种农业的时空变化格局

doi:10.11821/dlyj201408012

Abstract

Abstract:

Shifting cultivation has profound impact on land use and land cover change in Southeast Asia. Exploring the spatial distribution and variation rules and its influencing factors plays an important role in scientifically understanding LUCC, farmers' livelihood transition and maintaining ecosystem services. This paper uses remote sensing techniques to extract the spatial distribution of shifting cultivation in the border area of Myanmar, Laos and Thailand in the four years of 1996, 2000, 2003 and 2010, and uses GeoDA spatial autocorrelation analysis method and GIS spatial analysis technique to analyse spatial variation pattern, spatial autocorrelation of area and fragmentation of slash and burn agriculture, then further explores the difference of spatial variation in different countries. Results show that: the acreage of shifting cultivation in the border area of Myanmar, Laos and Thailand has experienced a process from slight increase to slight decrease and lastly substantially increased from 1996 to 2011. Both of the patch area and fragmentation of shifting cultivation has significant spatial autocorrelation. Swidden cycle and socio-economic factors may be the main reasons for the differences of spatial variation of slash and burn agriculture in different countries.

Key words: shifting cultivation, spatial variation, spatial autocorrelation, Moran's I, the border region of Myanmar,Laos and Thailand

Chenhua LIAO, Zhiming FENG, Peng LI, Xiaona LIU. The spatio-temporal variation of shifting cultivation in the border region of Myanmar, Laos and Thailand[J].GEOGRAPHICAL RESEARCH, 2014, 33(8): 1529-1541.

Figures/Tables 12

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References 18

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编号	成像时间	传感器	轨道号	行号	云盖(%)
1	1995/12/29	TM	131	46	12
2	1995/12/29	TM	131	47	0
3	1996/3/11	TM	130	46	8
4	2000/3/14	ETM+	130	46	0
5	2000/3/5	ETM+	131	46	0
6	2000/3/5	ETM+	131	47	0
7	2003/4/8	TM	130	46	0
8	2003/12/7	TM	131	46	1
9	2003/12/7	TM	131	47	0
10	2009/12/3	TM	131	46	7
11	2009/12/3	TM	131	47	5%
12	2011/4/22	TM	130	46	3%

变量	指数类型	1996	2000	2003	2011
斑块面积	全局Moran's I指数(I)	0.6076	0.5755	0.6293	0.6336
	全局Moran's I指数的期望值E(I)	-0.0004	-0.0004	-0.0004	-0.0004
	检验统计量(Z)	42.79	40.33	43.26	43.96
斑块个数	全局Moran's I指数(I)	0.6821	0.6830	0.6414	0.6349
	全局Moran's I指数的期望值E(I)	-0.0004	-0.0004	-0.0004	-0.0004
	检验统计量(Z)	48.29	48.31	44.00	44.69

变量	区域	指数类型	1996	2000	2003	2011
斑块面积	缅甸大其力县	Moran's I	0.6655	0.5211	0.4026	0.4137
		E(I)	-0.0021	-0.0021	-0.0021	-0.0021
		Z	19.97	15.97	11.94	12.01
	泰国清莱府	Moran's I	0.5601	0.5722	0.6580	0.6559
		E(I)	-0.0007	-0.0007	-0.0007	-0.0007
		Z	30.06	30.05	33.27	34.62
	老挝波乔省	Moran's I	0.5536	0.6195	0.5291	0.4925
		E(I)	-0.0012	-0.0012	-0.0012	-0.0012
		Z	21.95	24.64	20.99	19.90
斑块个数	缅甸大其力县	Moran's I	0.7147	0.6365	0.5485	0.5077
		E(I)	-0.0021	-0.0021	-0.0021	-0.0021
		Z	20.75	18.98	16.21	14.48
	泰国清莱府	Moran's I	0.6555	0.6352	0.6763	0.6482
		E(I)	-0.0007	-0.0007	-0.0007	-0.0007
		Z	34.41	32.87	34.04	33.47
	老挝波乔省	Moran's I	0.6693	0.7151	0.5274	0.6025
		E(I)	-0.0012	-0.0012	-0.0012	-0.0012
		Z	26.44	29.60	21.88	23.10

变量	年份	H-H	L-H	L-L	H-L	H-H和L-L	比例(%)
斑块面积	1996	192	20	0	1	192	90.14
	2000	227	26	0	0	227	89.72
	2003	186	14	538	0	724	98.10
	2011	210	17	571	0	781	97.87
斑块个数	1996	343	13	0	1	343	96.08
	2000	320	17	0	0	320	94.96
	2003	323	21	518	0	841	97.56
	2011	297	18	552	1	849	97.81

变量	国别	年份	H-H	L-H	L-L	H-L	H-H和L-L	比例(%)
斑块面积	缅甸大其力县	1996	40	1	39	0	79	98.75
		2000	46	3	23	0	69	95.83
		2003	36	3	49	0	85	96.59
		2011	34	7	52	1	86	91.49
	老挝波乔省	1996	75	9	7	0	82	90.11
		2000	98	10	0	0	98	90.74
		2003	86	8	146	1	232	96.27
		2011	101	13	175	3	276	94.52
	泰国清莱府	1996	107	12	0	2	107	88.43
		2000	95	11	0	1	95	88.79
		2003	115	7	0	0	115	94.26
		2011	140	9	1	0	141	94.00
斑块个数	缅甸大其力县	1996	74	4	36	0	110	96.49
		2000	73	5	21	0	94	94.95
		2003	50	2	49	0	99	98.02
		2011	57	3	61	0	118	97.52
	老挝波乔省	1996	101	3	9	1	110	96.49
		2000	115	6	0	1	115	94.26
		2003	78	9	135	1	213	95.52
		2011	91	8	168	1	259	96.64
	泰国清莱府	1996	186	7	0	2	186	95.38
		2000	168	13	0	1	168	92.31
		2003	200	10	0	3	200	93.90
		2011	156	8	1	1	157	94.58

The spatio-temporal variation of shifting cultivation in the border region of Myanmar, Laos and Thailand

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