Estimation of Crop Planting Area and Spatial Distribution Based on MODIS NDVI Time-series Data of Rice and Dry Farmland Crops

doi:10.11924/j.issn.1000-6850.casb2020-0432

Abstract

Abstract:

Aiming at the current situation and demand of paddy and dry farmland planting area survey in agriculture information service, we took Heilongjiang Province as the study area, by analyzing the characteristics of crop growing stage and the timer-series of vegetation index (NDVI, EVI and LSWI), we introduced accumulative temperature condition, then the spatial distribution was studied on cropland and others, and paddy rice and dry farmland crops. The classification results were verified with field investigation on verification points. The results showed that a high mapping accuracy of the classification was obtained, the overall accuracy reached 90.68%, the Kappa coefficient was 0.81. The mapping accuracy of rice planting area was 81.13% and the user accuracy was 97.73%, and that of dry farmland crops was 98.46% and 87.07%, respectively. Compared with the classification results without accumulative temperature, the overall accuracy was increased by 12.77%. The mapping accuracy of rice and dry farmland crop was increased by 22.57% and 5.94%, respectively. The finding of this study could improve the classification precision though introducing the accumulative temperature, and this method is featured with high automatic degree and stable classification results.

Key words: paddy rice, dry farmland crop, planting area, vegetation index, MODIS

CLC Number:

S127

Jiang Lanqi, Wang Ping, Jiang Lixia, Gong Lijuan, Yu Chenglong, Li Xiufen. Estimation of Crop Planting Area and Spatial Distribution Based on MODIS NDVI Time-series Data of Rice and Dry Farmland Crops[J]. Chinese Agricultural Science Bulletin, 2021, 37(16): 108-118.

Figures/Tables 13

References 30

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项目		水稻	旱地	总计	制图精度%
图像类别	水稻	2	86	88	81.13
	旱地	128	19	147	98.46
	总计	130	105	235
用户精度%		97.73	87.07
		总体精度90.68%		Kappa系数0.81

项目		水稻	旱地	总计	制图精度%
图像类别	水稻	2	86	88	81.13
	旱地	128	19	147	98.46
	总计	130	105	235
用户精度%		97.73	87.07
		总体精度90.68%		Kappa系数0.81

所辖地	黑龙江省统计年鉴		土地利用		本研究提取结果
所辖地	水稻面积	旱地面积	水稻面积	旱地面积	水稻面积	旱地面积
哈尔滨	5422.09	13735.86	5642.44	18209.57	5058.55	16588.07
齐齐哈尔	3531.32	18884.95	3400.46	27257.59	3286.36	27330.52
鸡西	1717.18	2604.82	2963.30	7785.82	2660.75	3393.75
鹤岗	998.54	884.30	2934.16	3687.32	3040.25	2331.2
双鸭山	867.43	3153.78	4027.74	7655.24	3517.85	4975.33
大庆	1106.11	6086.49	646.70	8467.43	1328.97	12408.91
伊春	391.84	1763.91	474.919	2366.15	316.12	1897.796
佳木斯	5192.3	6900.64	8014.39	11180.44	7698.75	8858.33
七台河	196.16	891.38	190.21	2782.64	218.33	1998.49
牡丹江	401.53	6146.9	942.90	8569.90	963.77	6444.14
黑河	140.51	10980.93	2.17	16417.09	80.90	10602.97
绥化	3480.43	15006.74	2791.81	18777.33	3212.25	17891.51
大兴安岭	0.04	1550.53	3.00	789.27	56.85	731.37
农垦总局	1527.4	27023.67	—	—	—	—
总计	24972.88	115614.90	32034.19	133945.79	31439.70	115452.39

所辖地	黑龙江省统计年鉴		土地利用		本研究提取结果
所辖地	水稻面积	旱地面积	水稻面积	旱地面积	水稻面积	旱地面积
哈尔滨	5422.09	13735.86	5642.44	18209.57	5058.55	16588.07
齐齐哈尔	3531.32	18884.95	3400.46	27257.59	3286.36	27330.52
鸡西	1717.18	2604.82	2963.30	7785.82	2660.75	3393.75
鹤岗	998.54	884.30	2934.16	3687.32	3040.25	2331.2
双鸭山	867.43	3153.78	4027.74	7655.24	3517.85	4975.33
大庆	1106.11	6086.49	646.70	8467.43	1328.97	12408.91
伊春	391.84	1763.91	474.919	2366.15	316.12	1897.796
佳木斯	5192.3	6900.64	8014.39	11180.44	7698.75	8858.33
七台河	196.16	891.38	190.21	2782.64	218.33	1998.49
牡丹江	401.53	6146.9	942.90	8569.90	963.77	6444.14
黑河	140.51	10980.93	2.17	16417.09	80.90	10602.97
绥化	3480.43	15006.74	2791.81	18777.33	3212.25	17891.51
大兴安岭	0.04	1550.53	3.00	789.27	56.85	731.37
农垦总局	1527.4	27023.67	—	—	—	—
总计	24972.88	115614.90	32034.19	133945.79	31439.70	115452.39