Chin J Plant Ecol ›› 2013, Vol. 37 ›› Issue (10): 922-932.DOI: 10.3724/SP.J.1258.2013.00095
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WANG Xie1,XIANG Cheng-Hua2,LI Xian-Wei1,*(),WEN Dong-Ju1
Received:
2013-07-08
Accepted:
2013-08-27
Online:
2013-07-08
Published:
2013-09-29
Contact:
LI Xian-Wei
WANG Xie,XIANG Cheng-Hua,LI Xian-Wei,WEN Dong-Ju. Effects of a winter wildfire on plant community structure and forage quality in subalpine grassland of western Sichuan, China[J]. Chin J Plant Ecol, 2013, 37(10): 922-932.
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URL: https://www.plant-ecology.com/EN/10.3724/SP.J.1258.2013.00095
类型 Type | 三个样地编号 IDs of three plots | 处理 Treatment | 地理环境 Geographical environment | 土壤性质 Soil characteristics | |||||
---|---|---|---|---|---|---|---|---|---|
坡位 Slope position | 坡向 Slope aspect | 海拔 Elevation (m) | 容重 Bulk density (g.cm-3)1) | 含水量 Moisture (%)1) | pH2) | ||||
B1 | b07; b08; b09 | 火烧 Burned | 上 Upper | 东 East | 3 429 | 0.992 | 22.3 | 6.60 | |
B2 | b10; b11; b12 | 火烧 Burned | 中 Middle | 东 East | 3 454 | 1.055 | 15.1 | 7.28 | |
B3 | b13; b14; b15 | 火烧 Burned | 下 Lower | 东 East | 3 461 | 1.051 | 15.4 | 7.54 | |
B4 | b04; b05; b06 | 火烧 Burned | 上 Upper | 西 West | 3 315 | 0.932 | 26.6 | 6.30 | |
B5 | b01; b02; b03 | 火烧 Burned | 中 Middle | 西 West | 3 243 | 1.058 | 15.6 | 6.71 | |
B6 | b16; b17; b18 | 火烧 Burned | 下 Lower | 西 West | 3 487 | 0.946 | 16.7 | 7.24 | |
U1 | u07; u08; u09 | 未火烧 Unburned | 上 Upper | 东 East | 3 409 | 0.993 | 23.4 | 6.44 | |
U2 | u10; u11; u12 | 未火烧 Unburned | 中 Middle | 东 East | 3 334 | 1.043 | 22.2 | 7.04 | |
U3 | u13; u14; u15 | 未火烧 Unburned | 下 Lower | 东 East | 3 444 | 0.987 | 19.3 | 7.47 | |
U4 | u04; u05; u06 | 未火烧 Unburned | 上 Upper | 西 West | 3 424 | 0.929 | 32.4 | 6.36 | |
U5 | u01; u02; u03 | 未火烧 Unburned | 中 Middle | 西 West | 3 196 | 1.068 | 17.0 | 6.63 | |
U6 | u16; u17; u18 | 未火烧 Unburned | 下 Lower | 西 West | 3 484 | 1.079 | 18.5 | 7.15 |
Table 1 General situation of sample plots
类型 Type | 三个样地编号 IDs of three plots | 处理 Treatment | 地理环境 Geographical environment | 土壤性质 Soil characteristics | |||||
---|---|---|---|---|---|---|---|---|---|
坡位 Slope position | 坡向 Slope aspect | 海拔 Elevation (m) | 容重 Bulk density (g.cm-3)1) | 含水量 Moisture (%)1) | pH2) | ||||
B1 | b07; b08; b09 | 火烧 Burned | 上 Upper | 东 East | 3 429 | 0.992 | 22.3 | 6.60 | |
B2 | b10; b11; b12 | 火烧 Burned | 中 Middle | 东 East | 3 454 | 1.055 | 15.1 | 7.28 | |
B3 | b13; b14; b15 | 火烧 Burned | 下 Lower | 东 East | 3 461 | 1.051 | 15.4 | 7.54 | |
B4 | b04; b05; b06 | 火烧 Burned | 上 Upper | 西 West | 3 315 | 0.932 | 26.6 | 6.30 | |
B5 | b01; b02; b03 | 火烧 Burned | 中 Middle | 西 West | 3 243 | 1.058 | 15.6 | 6.71 | |
B6 | b16; b17; b18 | 火烧 Burned | 下 Lower | 西 West | 3 487 | 0.946 | 16.7 | 7.24 | |
U1 | u07; u08; u09 | 未火烧 Unburned | 上 Upper | 东 East | 3 409 | 0.993 | 23.4 | 6.44 | |
U2 | u10; u11; u12 | 未火烧 Unburned | 中 Middle | 东 East | 3 334 | 1.043 | 22.2 | 7.04 | |
U3 | u13; u14; u15 | 未火烧 Unburned | 下 Lower | 东 East | 3 444 | 0.987 | 19.3 | 7.47 | |
U4 | u04; u05; u06 | 未火烧 Unburned | 上 Upper | 西 West | 3 424 | 0.929 | 32.4 | 6.36 | |
U5 | u01; u02; u03 | 未火烧 Unburned | 中 Middle | 西 West | 3 196 | 1.068 | 17.0 | 6.63 | |
U6 | u16; u17; u18 | 未火烧 Unburned | 下 Lower | 西 West | 3 484 | 1.079 | 18.5 | 7.15 |
盖度 Coverage | 频度 Frequency | |||||
---|---|---|---|---|---|---|
原始值 Original value | Braun-Blanquet等级 Braun-Blanquet class | 赋值 Value | 统计值 Statistical value | Raunkiaer频度等级 Raunkiaer’s frequency class | 赋值 Value | |
0%-5% | <5% | 1 | 0%-20% | A | 1 | |
6%-25% | 6%-25% | 2 | 21%-40% | B | 2 | |
26%-50% | 26%-50% | 3 | 41%-60% | C | 3 | |
51%-75% | 51%-75% | 4 | 61% -80% | D | 4 | |
76%-100% | 76%-100% | 5 | 81%-100% | E | 5 |
Table 2 Rank of coverage and frequency and valuation of rank
盖度 Coverage | 频度 Frequency | |||||
---|---|---|---|---|---|---|
原始值 Original value | Braun-Blanquet等级 Braun-Blanquet class | 赋值 Value | 统计值 Statistical value | Raunkiaer频度等级 Raunkiaer’s frequency class | 赋值 Value | |
0%-5% | <5% | 1 | 0%-20% | A | 1 | |
6%-25% | 6%-25% | 2 | 21%-40% | B | 2 | |
26%-50% | 26%-50% | 3 | 41%-60% | C | 3 | |
51%-75% | 51%-75% | 4 | 61% -80% | D | 4 | |
76%-100% | 76%-100% | 5 | 81%-100% | E | 5 |
排名 Rank | 科 Family | 属 Genus | 种 Species | |||||
---|---|---|---|---|---|---|---|---|
名称 Name | 比例 Proportion | 名称 Name | 比例 Proportion | 名称 Name | 比例 Proportion | |||
1 | 菊科 Compositae | 18.67% | 委陵菜属 Potentilla | 6.67% | 川甘火绒草 Leontopodium chuii | 5.18% | ||
2 | 禾本科 Gramineae | 13.69% | 火绒草属 Leontopodium | 5.63% | 嵩草 Kobresia sp. | 4.55% | ||
3 | 蔷薇科 Rosaceae | 12.24% | 蒿属 Artemisia | 5.42% | 高山豆 Tibetia himalaica | 4.35% | ||
4 | 豆科 Leguminosae | 11.00% | 嵩草属 Kobresia | 4.58% | 早熟禾属 Poa sp. | 4.35% | ||
5 | 毛茛科 Ranunculaceae | 7.26% | 拉拉藤属 Galium | 4.58% | 钉柱委陵菜 Potentilla saundersiana | 3.73% | ||
6 | 莎草科 Cyperaceae | 6.85% | 早熟禾属 Poa | 4.38% | 狼毒 Stellera chamaejasme | 3.73% | ||
7 | 茜草科 Rubiaceae | 4.56% | 高山豆属 Tibetia | 4.38% | 拉拉藤 Galium aparine | 3.52% | ||
8 | 瑞香科 Thymelaeaceae | 3.73% | 银莲花属 Anemone | 3.75% | 直梗高山唐松草 Thalictrum alpinum var. elatum | 3.11% | ||
9 | 报春花科 Primulaceae | 3.11% | 野豌豆属 Vicia | 3.75% | 重冠紫菀 Aster diplostephioides | 3.11% | ||
10 | 唇形科 Labiatae | 2.49% | 狼毒属 Stellera | 3.75% | 野豌豆 Vicia sativa | 2.90% | ||
总计 Total | 83.61% | 46.88% | 38.51% |
Table 3 Floristic composition of 36 sample plots
排名 Rank | 科 Family | 属 Genus | 种 Species | |||||
---|---|---|---|---|---|---|---|---|
名称 Name | 比例 Proportion | 名称 Name | 比例 Proportion | 名称 Name | 比例 Proportion | |||
1 | 菊科 Compositae | 18.67% | 委陵菜属 Potentilla | 6.67% | 川甘火绒草 Leontopodium chuii | 5.18% | ||
2 | 禾本科 Gramineae | 13.69% | 火绒草属 Leontopodium | 5.63% | 嵩草 Kobresia sp. | 4.55% | ||
3 | 蔷薇科 Rosaceae | 12.24% | 蒿属 Artemisia | 5.42% | 高山豆 Tibetia himalaica | 4.35% | ||
4 | 豆科 Leguminosae | 11.00% | 嵩草属 Kobresia | 4.58% | 早熟禾属 Poa sp. | 4.35% | ||
5 | 毛茛科 Ranunculaceae | 7.26% | 拉拉藤属 Galium | 4.58% | 钉柱委陵菜 Potentilla saundersiana | 3.73% | ||
6 | 莎草科 Cyperaceae | 6.85% | 早熟禾属 Poa | 4.38% | 狼毒 Stellera chamaejasme | 3.73% | ||
7 | 茜草科 Rubiaceae | 4.56% | 高山豆属 Tibetia | 4.38% | 拉拉藤 Galium aparine | 3.52% | ||
8 | 瑞香科 Thymelaeaceae | 3.73% | 银莲花属 Anemone | 3.75% | 直梗高山唐松草 Thalictrum alpinum var. elatum | 3.11% | ||
9 | 报春花科 Primulaceae | 3.11% | 野豌豆属 Vicia | 3.75% | 重冠紫菀 Aster diplostephioides | 3.11% | ||
10 | 唇形科 Labiatae | 2.49% | 狼毒属 Stellera | 3.75% | 野豌豆 Vicia sativa | 2.90% | ||
总计 Total | 83.61% | 46.88% | 38.51% |
指标 Index | 平均值 Mean | 95%置信区间 95% CI | 方差分析 ANOVA | |||||
---|---|---|---|---|---|---|---|---|
火烧 Burned | 未火烧 Unburned | 火烧 Burned | 未火烧 Unburned | 自由度 df | p值 p value | |||
Shannon-Wiener多样性指数 Shannon-Wiener diversity index | 1.92 | 1.89 | -0.22 | 0.28 | 1 | 0.83 | ||
Simpson多样性指数 Simpson diversity index | 0.75 | 0.77 | -0.10 | 0.06 | 1 | 0.61 | ||
Inverse-Simpson多样性指数 Inverse-Simpson diversity index | 5.40 | 4.83 | -0.93 | 2.07 | 1 | 0.44 | ||
物种丰富度 Species richness | 13 | 13 | -2 | 2 | 1 | 0.87 | ||
Pielou均匀度指数 Pielou’s evenness index | 0.74 | 0.73 | -0.06 | 0.08 | 1 | 0.83 |
Table 4 Differences of plant diversity index and evenness index between burned and unburned area
指标 Index | 平均值 Mean | 95%置信区间 95% CI | 方差分析 ANOVA | |||||
---|---|---|---|---|---|---|---|---|
火烧 Burned | 未火烧 Unburned | 火烧 Burned | 未火烧 Unburned | 自由度 df | p值 p value | |||
Shannon-Wiener多样性指数 Shannon-Wiener diversity index | 1.92 | 1.89 | -0.22 | 0.28 | 1 | 0.83 | ||
Simpson多样性指数 Simpson diversity index | 0.75 | 0.77 | -0.10 | 0.06 | 1 | 0.61 | ||
Inverse-Simpson多样性指数 Inverse-Simpson diversity index | 5.40 | 4.83 | -0.93 | 2.07 | 1 | 0.44 | ||
物种丰富度 Species richness | 13 | 13 | -2 | 2 | 1 | 0.87 | ||
Pielou均匀度指数 Pielou’s evenness index | 0.74 | 0.73 | -0.06 | 0.08 | 1 | 0.83 |
Fig. 1 Vegetation classified by TWINSPAN cluster analysis. “Fragaria moupinensis 1(+)”, a constraint equation, means coverage of Fragaria moupinens in community is 0%-4%; of this, “1”, coverage of species is in the range of 0%-4%; (+), present; (-), absent. I, Assoc. Fragaria moupinensis-Roegneria hirsute-Poa sp.-Ranunculus acris-Polygonum viviparum; II, Assoc. Roegneria hirsute; III, Assoc. Helictotrichon sp.-Poa sp.; IV, Assoc. Morina nepalensis-Anemone rivularis-Kobresia sp.-Carex sp.; V, Assoc. Poa sp. -Carex sp.-Potentilla saundersiana; VI, Assoc. Capillipedium parviflorum-Elymus dahuricus-Cymbopogon sp.; VII, Assoc. Capillipedium parviflorum-Helictotrichon sp.-Poa sp.; VIII, Assoc. Elymus dahuricus-Kobresia sp.-Poa sp.; IX, Assoc. Elymus dahuricus-Geranium yunanense; X, Assoc. Elymus dahuricus-Kobresia sp.-Saussurea sp.; XI, Assoc. Elymus dahuricus-Artemisia sacrorum; XII, Assoc. Helictotrichon sp. N, negative response; P, positive response. “b1”, “b2”, …,“b18”, IDs of 18 sample plots with burned; “u1”, “u2”, …,“u18”, IDs of 18 sample plots with unburned.
未火烧区域 Unburned area | 火烧区域 Burned area | |
---|---|---|
可食禾草 Edible graminoid species | 41.11% | 31.76% |
可食莎草类 Edible sedge species | 3.89% | 5.29% |
可食豆类 Edible leguminous species | 5.00% | 4.71% |
可食杂草类 Edible forbs species | 47.78% | 57.06% |
毒草 Noxious species | 2.22% | 1.18% |
Table 5 Relative proportions of composition of forage grass (calculated by dry-weight-rank)
未火烧区域 Unburned area | 火烧区域 Burned area | |
---|---|---|
可食禾草 Edible graminoid species | 41.11% | 31.76% |
可食莎草类 Edible sedge species | 3.89% | 5.29% |
可食豆类 Edible leguminous species | 5.00% | 4.71% |
可食杂草类 Edible forbs species | 47.78% | 57.06% |
毒草 Noxious species | 2.22% | 1.18% |
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