Table 1.

Variation in median βNTI values at different spatial scales and the relative contribution (%) of deterministic and stochastic process in each spatial scale of the North China Plain

Spatial scale	Spatial distance (km)	Median βNTI values	Deterministic(%)	Stochastic(%)
1	35.58	− 1.41	34.05	65.95
2	106.16	− 1.44	33.94	66.06
3	176.75	− 1.54	36.53	63.47
4	247.33	− 1.66	39.94	60.06
5	317.91	− 1.7	41.23	58.77
6	388.5	− 1.57	37.36	62.64
7	459.08	− 1.58	38.37	61.63
8	529.66	− 1.52	35.63	64.37
9	600.25	− 1.56	38.83	61.17
10	670.83	− 1.58	38.17	61.83
11	741.42	− 1.59	38.66	61.34
12	812	− 2.42	59.86	40.14
13	882.58	− 1.44	34.73	65.27
14	953.17	− 2.39	53.09	46.91
15	1023.8	− 2.83	74.69	25.31
16	1094.3	− 2.74	61.11	38.89

Spatial scale values in bold indicate that stochastic processes are dominant, while normal font indicates that deterministic processes are dominant