FOREST RESOURCES WANAGEMENT ›› 2018›› Issue (2): 138-145.doi: 10.13466/j.cnki.lyzygl.2018.02.022
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CHENG Fushan1(), HE Huaijiang2,3, LIU Qiang1, MU Huaizhi1, WANG Gerong1, LIN Lin1, ZHAO Peng4, XIA Fucai1()
Received:
2018-03-15
Revised:
2018-04-25
Online:
2018-04-28
Published:
2020-09-22
Contact:
XIA Fucai
E-mail:120019304@qq.com;xfc0707@163.com
CLC Number:
CHENG Fushan, HE Huaijiang, LIU Qiang, MU Huaizhi, WANG Gerong, LIN Lin, ZHAO Peng, XIA Fucai. Study on Spatial Structure of Quercus mongolica Forest in Sanhu National Nature Reserve[J]. FOREST RESOURCES WANAGEMENT, 2018, (2): 138-145.
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URL: https://www.lyzygl.com.cn/EN/10.13466/j.cnki.lyzygl.2018.02.022
Tab.1
Formulas and classifications of spatial structure parameters
参数 | 公式 | 参数说明 | 分级 |
---|---|---|---|
混交度(Mi) | Mi= | 描述相邻木中与参照树i不同种个体所占的比例。若参照树i与第j株相邻木非同种,则vij=1;反之,vij=0 | Mi=0表零度混交;Mi=0.25表弱度混交 Mi=0.5表中度混交;Mi=0.75表强度混交 Mi=1表完全混交 |
角尺度(Wi) | Wi= | 用来形容相邻木围绕参照树i的均匀性程度。若第j个α角小于标准角α0,则zij=1;反之,zij=0 | Wi=0绝对均匀;Wi=0.25均匀分布 Wi=0.5随机分布;Wi=0.75不均匀分布 Wi=1团状分布 |
大小比数(Ui) | Ui= | 描述相邻木围绕参照树i的大小分化程度。若参照树i比相邻木j小,则kij=1;反之,kij=0 | Ui=0目标树处于绝对优势;Ui=0.25目标树处于亚优势 Ui=0.5目标树处于中庸;Ui=0.75目标树处于劣势 Ui=1目标树处于绝对劣势 |
Tab.2
Species composition and stand characteristics of Q.mongolica forests
树种 | 株数 | 胸高断面积 | 蓄积量 | 平均胸径/cm | |||||
---|---|---|---|---|---|---|---|---|---|
总计/株 | 百分比/% | 总计/m2 | 百分比/% | 总计/m3 | 百分比/% | ||||
蒙古栎Q.mongolica | 431 | 62.10 | 1817.865 | 83.02 | 120.9242 | 85.28 | 21.32 | ||
黑桦R.maximovicziana | 28 | 4.03 | 116.188 | 5.31 | 7.7413 | 5.46 | 20.79 | ||
春榆U.davidiana | 9 | 1.30 | 19.904 | 0.91 | 1.1174 | 0.79 | 15.93 | ||
色木槭A.mono | 7 | 1.01 | 10.707 | 0.49 | 0.5605 | 0.40 | 13.23 | ||
黄菠萝P.amurense | 6 | 0.86 | 5.975 | 0.27 | 0.3283 | 0.23 | 10.77 | ||
水曲柳F.mandschurica | 2 | 0.29 | 9.566 | 0.44 | 0.7064 | 0.50 | 24.30 | ||
山杨P.davidiana | 1 | 0.14 | 0.008 | 0.00 | 0.0441 | 0.03 | 10.40 | ||
杂木Other species | 210 | 30.26 | 209.335 | 9.56 | 10.3753 | 7.32 | 10.03 | ||
总计 | 694 | 100.00 | 2189.547 | 100.00 | 141.7975 | 100.00 | 17.63 |
Tab.3
Mingling of various tree species of Q.mongolica forest in Sanhu National Nature Reserve
树种 | 混交度(Mi) | |||||
---|---|---|---|---|---|---|
0 | 0.25 | 0.5 | 0.75 | 1.00 | 平均 | |
蒙古栎Q.mongolica | 0.34 | 0.28 | 0.25 | 0.12 | 0.01 | 0.30 |
黑桦R.maximovicziana | 0.00 | 0.00 | 0.25 | 0.39 | 0.36 | 0.78 |
春榆U.davidiana | 0.00 | 0.00 | 0.00 | 0.22 | 0.78 | 0.94 |
色木槭A.mono | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.00 |
黄菠萝P.amurense | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.00 |
水曲柳F.mandschurica | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.00 |
山杨P.davidiana | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 1.00 |
杂木Other species | 0.09 | 0.15 | 0.28 | 0.30 | 0.18 | 0.58 |
林分整体 | 0.24 | 0.22 | 0.25 | 0.18 | 0.10 | 0.43 |
Tab.4
Uniform angle index of various tree species of Q.mongolica in the Sanhu National Nature Reserve
树种 | 角尺度(Wi) | |||||
---|---|---|---|---|---|---|
0 | 0.25 | 0.5 | 0.75 | 1.00 | 平均 | |
蒙古栎Q.mongolica | 0.014 | 0.220 | 0.592 | 0.158 | 0.016 | 0.485 |
黑桦R.maximovicziana | 0.000 | 0.286 | 0.500 | 0.214 | 0.000 | 0.482 |
春榆U.davidiana | 0.000 | 0.333 | 0.667 | 0.000 | 0.000 | 0.417 |
色木槭A.mono | 0.143 | 0.429 | 0.286 | 0.143 | 0.000 | 0.357 |
黄菠萝P.amurense | 0.000 | 0.667 | 0.167 | 0.000 | 0.167 | 0.417 |
水曲柳F.mandschurica | 0.000 | 0.000 | 0.500 | 0.500 | 0.000 | 0.625 |
山杨P.davidiana | 0.000 | 0.000 | 1.000 | 0.000 | 0.000 | 0.500 |
杂木Other species | 0.010 | 0.190 | 0.638 | 0.148 | 0.014 | 0.492 |
林分整体 | 0.013 | 0.220 | 0.597 | 0.154 | 0.016 | 0.485 |
Tab.5
Neighborhood comparison of various tree species of Q.mongolica in the Sanhu National Nature Reserve
树种 | 大小比数 | |||||
---|---|---|---|---|---|---|
0 | 0.25 | 0.5 | 0.75 | 1.00 | 平均 | |
蒙古栎Q.mongolica | 0.26 | 0.24 | 0.19 | 0.17 | 0.14 | 0.42 |
黑桦R.maximovicziana | 0.25 | 0.25 | 0.21 | 0.18 | 0.11 | 0.41 |
春榆U.davidiana | 0.22 | 0.33 | 0.11 | 0.22 | 0.11 | 0.42 |
色木槭A.mono | 0.00 | 0.29 | 0.43 | 0.14 | 0.14 | 0.54 |
黄菠萝P.amurense | 0.17 | 0.33 | 0.17 | 0.17 | 0.17 | 0.46 |
水曲柳F.mandschurica | 0.00 | 0.50 | 0.50 | 0.00 | 0.00 | 0.38 |
山杨P.davidiana | 0.00 | 0.00 | 1.00 | 0.00 | 0.00 | 0.50 |
杂木Other species | 0.05 | 0.15 | 0.18 | 0.30 | 0.32 | 0.68 |
林分整体 | 0.19 | 0.22 | 0.19 | 0.21 | 0.19 | 0.50 |
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