极小种群植物猪血木的种群现状及保护对策

魏雪莹, 叶育石, 林喜珀, 崔煜文, 曾飞燕, 王发国

Population status and conservation of an extremely small population species Euryodendron excelsum

WEI Xue-Ying, YE Yu-Shi, LIN Xi-Po, CUI Yu-Wen, ZENG Fei-Yan, WANG Fa-Guo

表3 阳春猪血木种群标准生命表

Table 3 Standard life table of Euryodendron excelsum population in Yangchun City

大小级 Size stage 划分标准 Division standard ax lx dx qx Lx Tx kx ex lnlx I (St) 0 ≤ H ≤ 100 97 1 000 185. 0.19 1 814 1 855 0.21 1.86 6.91 II (St) H > 100, DBH < 3.0 79 814 618 0.76 1 010 1 051 1.43 1.29 6.70 III (St) DBH [3.0, 9.0) 19 196 123 0.63 268 309 1.00 1.58 5.28 IV (St) DBH [9.0, 15.0) 7 72 -20 -0.29 164 206 -0.25 2.86 4.28 V (St) DBH [15.0, 21.0) 9 93 30 0.33 154 195 0.41 2.11 4.53 VI (St) DBH [21.0, 27.0) 6 62 -41 -0.67 164 206 -0.51 3.33 4.12 VII (St) DBH [27.0, 33.0) 10 103 92 0.90 113 154 2.30 1.50 4.64 VIII (St) DBH [33.0, 39.0) 1 10 -20 -2.00 41 82 -1.10 8.00 2.33 IX (St) DBH [39.0, 45.0) 3 31 -10 -0.33 72 113 -0.29 3.67 3.43 X (St) ≥ 45.0 4 41 NA NA 41 364 3.72 8.83 3.72 I (Sa) 0 ≤ H ≤ 100 80 1 000 453 0.45 1 546 1 587 0.60 1.59 6.91 II (Sa) H > 100, DBH < 3.0 53 546 402 0.74 690 731 1.33 1.34 6.30 III (Sa) DBH [3.0, 9.0) 14 144 123 0.86 164 206 1.95 1.43 4.97 IV (Sa) DBH [9.0, 15.0) 2 21 -10 -0.50 51 92 -0.41 4.50 3.03 V (Sa) DBH [15.0, 21.0) 3 31 -10 -0.33 72 113 -0.29 3.67 3.43 VI (Sa) DBH [21.0, 27.0) 4 41 -30 -0.75 113 154 -0.56 3.75 3.72 VII (Sa) DBH [27.0, 33.0) 7 72 61 0.86 82 123 1.95 1.71 4.28 VIII (Sa) DBH [33.0, 39.0) 1 10 -20 -2.00 41 82 -1.10 8.00 2.33 IX (Sa) DBH [39.0, 45.0) 3 31 -10 -0.33 72 113 -0.29 3.67 3.43 X (Sa) ≥ 45.0 4 41 NA NA 41 364 3.72 8.83 3.72 I (Ss) 0 ≤ H ≤ 100 24 1 000 835 0.31 1 164 1 206 1.80 1.21 6.91 II (Ss) H > 100, DBH < 3.0 16 165 113 0.84 216 257 1.16 1.56 6.91 III (Ss) DBH [3.0, 9.0) 5 52 0 0.69 103 144 0.00 2.80 5.11 IV (Ss) DBH [9.0, 15.0) 5 52 -10 0.00 113 154 -0.18 3.00 3.94 V (Ss) DBH [15.0, 21.0) 6 62 41 -0.20 82 123 1.10 2.00 3.94 VI (Ss) DBH [21.0, 27.0) 2 21 -10 0.67 51 92 -0.41 4.50 4.12 VII (Ss) DBH [27.0, 33.0) 3 31 3.03