Table 4. Coefficients of age-related NPP functions for different stands for Eq 9.

Stands	M	b	g	d	R2	RMSE	precision
Pinus sylvestrisvar	172.477	0.628	6.852	3.437	0.9961	5.326	95.77%
Mixed coniferous forest	166.656	1.712	35.041	0.495	0.9938	6.322	95.24%
Coniferous-broadleaf mixed forest	144.989	2.888	20.944	0.455	0.9980	3.655	98.45%
Quercus mongolica	48.000	5.808	55.391	0.122	0.9998	2.176	99.17%
Populus plantation	120.076	4.789	9.420	0.458	0.9998	2.753	98.90%
Populus davidiana	96.369	3.176	32.026	0.292	0.9997	3.012	98.75%
Mixed broad-leaf forest	84.991	4.048	20.142	0.388	0.9975	4.760	96.77%
Larix gmelinii	397.404	0.803	7.186	2.513	0.9969	5.094	95.80%
Pinus koraiensis	181.997	0.053	3.147	5.228	0.9982	3.579	98.63%
Betula davuria	32.278	4.720	43.153	0.147	0.9999	2.086	99.73%
Tilia amurensis	143.107	2.394	38.398	0.122	0.9997	2.997	98.83%
Betula platyphylla	150.000	1.892	14.113	1.050	0.9978	4.962	96.85%