简介
澳大利亚数字地球（DEA）土地覆被系统采用粮食及农业组织土地覆被分类系统分类法第二版（Di Gregorio 和 Jansen，1998 年；2005 年）为澳大利亚提供年度土地覆被分类。
DEA 土地覆被将 30 多年的卫星图像转化为澳大利亚土地、植被和水体随时间变化的证据。
土地覆被是地球表面观察到的物理覆被，包括树木、灌木、草、土壤、裸露的岩石、水体、种植园、农作物和建筑结构。全澳大利亚一致的土地覆被产品有助于了解环境的不同部分是如何变化和相互关联的。记录一段时间的地球观测数据首先可以观察特定时间的土地覆被状况，其次可以通过不同时间的比较观察土地覆被的变化方式。
如需了解更多信息，请参阅 DEA Landcover Landsat。
该产品是澳大利亚数字地球计划的一部分
数据产品
Catalog Owner
Geoscience Australia
Dataset Availability
1988-01-01T00:00:00Z–2020-01-01T00:00:00Z
Dataset Provider
Geoscience Australia NGIS
Contact
https://www.ga.gov.au/contact-us
Earth Engine Snippet
ee.ImageCollection("projects/geoscience-aus-cat/assets/ga_ls_landcover_class_cyear_2")
Resolution 25 meters
Bands
Name | Units | Min | Max | Description |
|---|---|---|---|---|
baregrad_phy_cat_l4d | 0 | 15 | Bare gradation. Describes the percentage of bare in naturally bare areas. | |
canopyco_veg_cat_l4d | 0 | 16 | Vegetation Cover. The measured cover of vegetated areas. | |
inttidal_wat_cat_l4a | 0 | 3 | Intertidal. Delineates the intertidal zone. | |
level3 | 0 | 220 | The base Level 3 land cover classification. | |
level3_R | m | 0 | 255 | R band of RGB composite for level 3 data. |
level3_G | m | 0 | 255 | G band of RGB composite for level 3 data. |
level3_B | m | 0 | 255 | B band of RGB composite for level 3 data. |
level4 | 0 | 104 | All level 3 and level 4 classes for a given pixel are combined to give a single classification value. | |
level4_R | 0 | 255 | R band of RGB composite for level 4 data. | |
level4_G | 0 | 255 | G band of RGB composite for level 4 data. | |
level4_B | 0 | 255 | B band of RGB composite for level 4 data. | |
lifeform_veg_cat_l4a | 0 | 2 | Lifeform. Describes the detail of vegetated classes, separating woody from herbaceous. | |
waterper_wat_cat_l4d | 0 | 9 | Water Persistence. Describes the number of months a water body contains water. | |
watersea_veg_cat_l4a | 0 | 7 | Water Seasonality. The length of time an aquatic vegetated area was measured as being inundated. | |
waterstt_wat_cat_l4a | 0 | 1 | Water State. Describes whether the detected water is snow, ice or liquid water. Only liquid water is described in this release. |
baregrad_phy_cat_l4d Class Table
Value | Color | Description |
|---|---|---|
10 | #622f22 | Sparsely vegetated (< 20 % bare) |
12 | #5c3317 | Very sparsely vegetated (20 to 60 % bare) |
15 | #804a00 | Bare areas, unvegetated (> 60 % bare) |
canopyco_veg_cat_l4d Class Table
Value | Color | Description |
|---|---|---|
10 | #8fb31d | Closed (>65 %) |
12 | #b0bf1a | Open (40 to 65 %) |
13 | #9dc209 | Open (15 to 40 %) |
15 | #77dd77 | Sparse (4 to 15 %) |
16 | #64e986 | Scattered (1 to 4 %) |
inttidal_wat_cat_l4a Class Table
Value | Color | Description |
|---|---|---|
3 | #151b54 | Intertidal zone |
level3 Class Table
Value | Color | Description |
|---|---|---|
111 | #4aa02c | Cultivated Terrestrial Vegetation (CTV) |
112 | #54c571 | (Semi-)Natural Terrestrial Vegetation (NTV) |
124 | #306eff | Natural Aquatic Vegetation (NAV) |
215 | #e6e6fa | Artificial Surface (AS) |
216 | #5c3317 | Natural Bare Surface (NS) |
220 | #0020c2 | Water |
level4 Class Table
Value | Color | Description |
|---|---|---|
1 | #347c17 | Cultivated Terrestrial Vegetated |
3 | #347c17 | Cultivated Terrestrial Vegetated: Herbaceous |
4 | #347c17 | Cultivated Terrestrial Vegetated: Closed (> 65 %) |
5 | #347c17 | Cultivated Terrestrial Vegetated: Open (40 to 65 %) |
6 | #347c17 | Cultivated Terrestrial Vegetated: Open (15 to 40 %) |
7 | #347c17 | Cultivated Terrestrial Vegetated: Sparse (4 to 15 %) |
8 | #347c17 | Cultivated Terrestrial Vegetated: Scattered (1 to 4 %) |
14 | #347c17 | Cultivated Terrestrial Vegetated: Herbaceous Closed (> 65 %) |
15 | #347c17 | Cultivated Terrestrial Vegetated: Herbaceous Open (40 to 65 %) |
16 | #347c17 | Cultivated Terrestrial Vegetated: Herbaceous Open (15 to 40 %) |
17 | #347c17 | Cultivated Terrestrial Vegetated: Herbaceous Sparse (4 to 15 %) |
18 | #347c17 | Cultivated Terrestrial Vegetated: Herbaceous Scattered (1 to 4 %) |
19 | #12ad2b | Natural Terrestrial Vegetated |
20 | #12ad2b | Natural Terrestrial Vegetated: Woody |
21 | #12ad2b | Natural Terrestrial Vegetated: Herbaceous |
22 | #12ad2b | Natural Terrestrial Vegetated: Closed (> 65 %) |
23 | #12ad2b | Natural Terrestrial Vegetated: Open (40 to 65 %) |
24 | #12ad2b | Natural Terrestrial Vegetated: Open (15 to 40 %) |
25 | #12ad2b | Natural Terrestrial Vegetated: Sparse (4 to 15 %) |
26 | #12ad2b | Natural Terrestrial Vegetated: Scattered (1 to 4 %) |
27 | #12ad2b | Natural Terrestrial Vegetated: Woody Closed (> 65 %) |
28 | #12ad2b | Natural Terrestrial Vegetated: Woody Open (40 to 65 %) |
29 | #12ad2b | Natural Terrestrial Vegetated: Woody Open (15 to 40 %) |
30 | #12ad2b | Natural Terrestrial Vegetated: Woody Sparse (4 to 15 %) |
31 | #12ad2b | Natural Terrestrial Vegetated: Woody Scattered (1 to 4 %) |
32 | #12ad2b | Natural Terrestrial Vegetated: Herbaceous Closed (> 65 %) |
33 | #12ad2b | Natural Terrestrial Vegetated: Herbaceous Open (40 to 65 %) |
34 | #12ad2b | Natural Terrestrial Vegetated: Herbaceous Open (15 to 40 %) |
35 | #12ad2b | Natural Terrestrial Vegetated: Herbaceous Sparse (4 to 15 %) |
36 | #12ad2b | Natural Terrestrial Vegetated: Herbaceous Scattered (1 to 4 %) |
55 | #a0d6b4 | Natural Aquatic Vegetated |
56 | #a0d6b4 | Natural Aquatic Vegetated: Woody |
57 | #a0d6b4 | Natural Aquatic Vegetated: Herbaceous |
58 | #a0d6b4 | Natural Aquatic Vegetated: Closed (> 65 %) |
59 | #a0d6b4 | Natural Aquatic Vegetated: Open (40 to 65 %) |
60 | #a0d6b4 | Natural Aquatic Vegetated: Open (15 to 40 %) |
61 | #a0d6b4 | Natural Aquatic Vegetated: Sparse (4 to 15 %) |
62 | #a0d6b4 | Natural Aquatic Vegetated: Scattered (1 to 4 %) |
63 | #a0d6b4 | Natural Aquatic Vegetated: Woody Closed (> 65 %) |
64 | #a0d6b4 | Natural Aquatic Vegetated: Woody Closed (> 65 %) Water > 3 months (semi-) permanent |
65 | #a0d6b4 | Natural Aquatic Vegetated: Woody Closed (> 65 %) Water < 3 months (temporary or seasonal) |
66 | #a0d6b4 | Natural Aquatic Vegetated: Woody Open (40 to 65 %) |
67 | #a0d6b4 | Natural Aquatic Vegetated: Woody Open (40 to 65 %) Water > 3 months (semi-) permanent |
68 | #a0d6b4 | Natural Aquatic Vegetated: Woody Open (40 to 65 %) Water < 3 months (temporary or seasonal) |
69 | #a0d6b4 | Natural Aquatic Vegetated: Woody Open (15 to 40 %) |
70 | #a0d6b4 | Natural Aquatic Vegetated: Woody Open (15 to 40 %) Water > 3 months (semi-) permanent |
71 | #a0d6b4 | Natural Aquatic Vegetated: Woody Open (15 to 40 %) Water < 3 months (temporary or seasonal) |
72 | #a0d6b4 | Natural Aquatic Vegetated: Woody Sparse (4 to 15 %) |
73 | #a0d6b4 | Natural Aquatic Vegetated: Woody Sparse (4 to 15 %) Water > 3 months (semi-) permanent |
74 | #a0d6b4 | Natural Aquatic Vegetated: Woody Sparse (4 to 15 %) Water < 3 months (temporary or seasonal) |
75 | #a0d6b4 | Natural Aquatic Vegetated: Woody Scattered (1 to 4 %) |
76 | #a0d6b4 | Natural Aquatic Vegetated: Woody Scattered (1 to 4 %) Water > 3 months (semi-) permanent |
77 | #a0d6b4 | Natural Aquatic Vegetated: Woody Scattered (1 to 4 %) Water < 3 months (temporary or seasonal) |
78 | #a0d6b4 | Natural Aquatic Vegetated: Herbaceous Closed (> 65 %) |
79 | #a0d6b4 | Natural Aquatic Vegetated: Herbaceous Closed (> 65 %) Water > 3 months (semi-) permanent |
80 | #a0d6b4 | Natural Aquatic Vegetated: Herbaceous Closed (> 65 %) Water < 3 months (temporary or seasonal) |
81 | #a0d6b4 | Natural Aquatic Vegetated: Herbaceous Open (40 to 65 %) |
82 | #a0d6b4 | Natural Aquatic Vegetated: Herbaceous Open (40 to 65 %) Water > 3 months (semi-) permanent |
83 | #a0d6b4 | Natural Aquatic Vegetated: Herbaceous Open (40 to 65 %) Water < 3 months (temporary or seasonal) |
84 | #a0d6b4 | Natural Aquatic Vegetated: Herbaceous Open (15 to 40 %) |
85 | #a0d6b4 | Natural Aquatic Vegetated: Herbaceous Open (15 to 40 %) Water > 3 months (semi-) permanent |
86 | #a0d6b4 | Natural Aquatic Vegetated: Herbaceous Open (15 to 40 %) Water < 3 months (temporary or seasonal) |
87 | #a0d6b4 | Natural Aquatic Vegetated: Herbaceous Sparse (4 to 15 %) |
88 | #a0d6b4 | Natural Aquatic Vegetated: Herbaceous Sparse (4 to 15 %) Water > 3 months (semi-) permanent |
89 | #a0d6b4 | Natural Aquatic Vegetated: Herbaceous Sparse (4 to 15 %) Water < 3 months (temporary or seasonal) |
90 | #a0d6b4 | Natural Aquatic Vegetated: Herbaceous Scattered (1 to 4 %) |
91 | #a0d6b4 | Natural Aquatic Vegetated: Herbaceous Scattered (1 to 4 %) Water > 3 months (semi-) permanent |
92 | #a0d6b4 | Natural Aquatic Vegetated: Herbaceous Scattered (1 to 4 %) Water < 3 months (temporary or seasonal) |
93 | #e6e6fa | Artificial Surface |
94 | #4b5320 | Natural Surface |
95 | #4b5320 | Natural Surface: Sparsely vegetated |
96 | #4b5320 | Natural Surface: Very sparsely vegetated |
97 | #4b5320 | Natural Surface: Bare areas, unvegetated |
98 | #3bb9ff | Water |
99 | #3bb9ff | Water: (Water) |
100 | #3bb9ff | Water: (Water) Tidal area |
101 | #3bb9ff | Water: (Water) Perennial (> 9 months) |
102 | #3bb9ff | Water: (Water) Non-perennial (7 to 9 months) |
103 | #3bb9ff | Water: (Water) Non-perennial (4 to 6 months) |
104 | #3bb9ff | Water: (Water) Non-perennial (1 to 3 months) |
lifeform_veg_cat_l4a Class Table
Value | Color | Description |
|---|---|---|
1 | #808000 | Woody (trees, shrubs) |
2 | #848b79 | Herbaceous (grasses, forbs) |
waterper_wat_cat_l4d Class Table
Value | Color | Description |
|---|---|---|
1 | #357ec7 | > 9 months |
7 | #6495ed | 7-9 months |
8 | #5cb3ff | 4-6 months |
9 | #87ceeb | 1-3 months |
watersea_veg_cat_l4a Class Table
Value | Color | Description |
|---|---|---|
1 | #357ec7 | Semi-permanent or permanent (> 3 months) |
7 | #00bfff | Temporary or seasonal (< 3 months) |
waterstt_wat_cat_l4a Class Table
Value | Color | Description |
|---|---|---|
1 | #357ec7 | Water |
代码
代码语言：javascript复制var landcover = ee.ImageCollection('projects/geoscience-aus-cat/assets/ga_ls_landcover_class_cyear_2');
var visualization = {
bands: ['level4_R', 'level4_G', 'level4_B']
};
var lon = 122.41280;
var lat = -18.06402;
Map.setCenter(lon, lat, 10);
// Degrees in EPSG:3857.
var delta = 0.25;
var areaOfInterest = ee.Geometry.Rectangle(
[lon - delta, lat - delta, lon delta, lat delta], null, false);
var image = landcover.filterDate('1995-01-01', '1996-01-01')
.filterBounds(areaOfInterest);
Map.addLayer(image, visualization, 'Land Cover');结果
引用
- Lucas R, Mueller N, Siggins A, Owers C, Clewley D, Bunting P, Kooymans C, Tissott B, Lewis B, Lymburner L, Metternicht G. Land Cover Mapping using Digital Earth Australia. Data. 2019; 4(4):143. doi:10.3390/data4040143. Christopher J. Owers, Richard M. Lucas, Daniel Clewley, Carole Planque, Suvarna Punalekar, Belle Tissott, Sean M. T. Chua, Pete Bunting, Norman Mueller & Graciela Metternicht (2021) Living Earth: Implementing national standardised land cover classification systems for Earth Observation in support of sustainable development, Big Earth Data, 5:3, 368-390. doi:10.1080/20964471.2021.1948179.
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