基于地理探测器的科尔沁沙地植被NDVI时空变化特征及其驱动因素

陈雪萍, 赵学勇, 张晶, 王瑞雄, 卢建男

Variation of NDVI spatio-temporal characteristics and its driving factors based on geodetector model in Horqin Sandy Land, China

CHEN Xue-Ping, ZHAO Xue-Yong, ZHANG Jing, WANG Rui-Xiong, LU Jian-Nan

表3 归一化植被指数(NDVI)各驱动因子的分级标准

Table 3 Grading standards of driving factors for Normalized Difference Vegetation Index (NDVI)

分级 Class X1 (℃) X2 (mm) X3 (°) X4 X5 X6 X7 (person·km-2) X8 (hm2·km-2) X9 (head·km-2) X10 (hm2·km-2) 1 4.68-5.67 462.77-492.69 0-2 淋溶土 Alfisol 针叶林 Needle leaf forest 平原 Plain 17.67-41.26 1.69-2.94 8.99-70.65 13.30-13.40 2 5.67-6.45 492.69-511.24 2-3 钙层土 Pedocal 阔叶林 Broadleaf forest 台地 Platform 41.26-49.39 2.94-4.41 70.65-96.30 13.40-16.09 3 6.45-7.07 511.24-529.69 3-5 初育土 Primary 灌丛 Shrub 丘陵 Hill 49.39-56.81 4.41-4.89 96.30-110.69 16.09-18.02 4 7.07-7.66 529.69-547.57 5-8 半水成土 Semi- hydromorph 草原 Steppe 小起伏 山地 Small undulating mountain 56.81-67.65 4.89-5.14 110.69-118.50 18.02-18.89 5 7.66-8.22 547.57-566.55 8-10 水成土 Hydromorph 草甸 Meadow 中起伏 山地 Middle undulating mountain 67.65-86.71 5.14-5.29 118.50-128.85 18.89-20.18 6 8.22-8.72 566.55-587.78 10-13 盐碱土 Saline-alkali 人工林Artificial forest 86.71-132.62 5.29-5.56 128.85-141.48 20.18-21.56 7 8.72-9.32 587.78-628.31 13-15 湖泊水库 Lakes and reservoirs 132.62-260.95 5.56-7.89 141.48-224.26 21.56-33.17 8 15-17 河流 Rivers 9 17-30 河内沙洲 Sandbank