洮河上游紫果云杉种群结构特征

赵阳,刘锦乾,陈学龙,杨萌萌,曹家豪,齐瑞,曹秀文

Population structure characteristics of Picea purpurea in the upstream of Taohe River

Yang ZHAO,Jin-Qian LIU,Xue-Long CHEN,Meng-Meng Yang,Jia-Hao CAO,Rui QI,Xiu-Wen CAO

表4 洮河上游紫果云杉种群动态变化指数

Table 4 Dynamic index of Picea purpurea populations in the upstream of Taohe River

龄级 Age class	动态指数级 Dynamic index class	动态指数 Dynamic index value (%)
龄级 Age class	动态指数级 Dynamic index class	尕海-则岔林区 Gahai-Zecha forest region	卡车林区 Kache forest region	冶力关林区 Yeliguan forest region
I-II	V₁	71.98	75.31	71.22
II-III	V₂	53.77	68.00	55.00
III-IV	V₃	61.22	15.63	-30.77
IV-V	V₄	21.05	-30.77	3.85
V-VI	V₅	13.33	-50.00	12.00
VI-VII	V₆	17.95	6.41	-37.14
VII-VIII	V₇	25.00	71.23	-28.57
VIII-IX	V₈	20.83	76.19	61.22
IX-X	V₉	21.05	20.00	13.16
X-XI	V₁₀	20.00	25.00	63.64
XI-XII	V₁₁	25.00	0.00	33.33
XII-XIII	V₁₂	22.22	33.33	37.50
XIII-XIV	V₁₃	28.57	0.00	20.00
XIV-XV	V₁₄	20.00	-	50.00
XV-XVI	V₁₅	25.00	-	00.00
V_pi		60.50	53.68	36.94
V′_pi		2.91	1.92	1.15
P_max		2.08	3.57	3.13