Table 1 RGB value of the clustering results for 4 sample villages

Dawuyuan village

Picture 1 (2022.6)

(68, 138, 86)

(89, 121, 134)

(67, 100, 107)

(42, 72, 72)

(118, 147, 161)

(196, 203, 211)

(53, 110, 67)

Picture 2 (2022.6)

(81, 121, 121)

(97, 134, 140)

(65, 107, 105)

(112, 150, 161)

(138, 171, 186)

(219, 229, 238)

(47, 89, 88)

Picture 3 (2022.4)

(104, 95, 90)

(152, 140, 128)

(23, 23, 21)

(180, 171, 162)

(48, 47, 43)

(125, 116, 107)

(79, 74, 68)

Picture 4 (2022.4)

(135, 125, 115)

(62, 59, 52)

(88, 83, 79)

(157, 148, 133)

(185, 177, 166)

(29, 29, 27)

(113, 104, 99)

Yatoushan village

Picture 1 (2016.6)

(72, 68, 57)

(156, 192, 228)

(165, 142, 111)

(29, 29, 21)

(124, 166, 216)

(119, 102, 82)

(211, 188, 156)

Picture 2 (2017.7)

(114, 155, 201)

(239, 245, 241)

(117, 114, 71)

(166, 152, 113)

(60, 61, 30)

(215, 192, 148)

(176, 198, 219)

Picture 3 (2022.4)

(243, 240, 233)

(67, 69, 64)

(128, 132, 135)

(255, 255, 255)

(44, 47, 40)

(213, 213, 211)

(94, 96, 95)

Picture 4 (2022.4)

(154, 144, 142)

(64, 65, 57)

(116, 107, 102)

(177, 167, 166)

(90, 91, 83)

(135, 125, 123)

(201, 191, 190)

Longmenhe village

Picture 1 (2017.1)

(121, 127, 143)

(98, 104, 118)

(58, 64, 54)

(151, 154, 173)

(26, 31, 25)

(119, 123, 96)

(82, 87, 81)

Picture 2 (2022.4)

(204, 206, 184)

(32, 31, 40)

(115, 123, 100)

(173, 173, 147)

(58, 67, 62)

(86, 97, 81)

(143, 147, 122)

Dongyuan village

Picture 1 (2022.4)

(173, 164, 131)

(218, 241, 255)

(67, 67, 43)

(33, 31, 19)

(103, 98, 66)

(207, 205, 182)

(136, 130, 94)

Picture 2 (2022.4)

(83, 83, 57)

(231, 237, 251)

(151, 142, 127)

(120, 113, 94)

(205, 202, 197)

(40, 37, 30)

(179, 170, 161)