植物生态学报 ›› 2012, Vol. 36 ›› Issue (5): 403-410.DOI: 10.3724/SP.J.1258.2012.00403
所属专题: 青藏高原植物生态学:群落生态学
发布日期:
2012-05-04
通讯作者:
杜国祯
作者简介:
* E-mail: guozdu@lzu.edu.cn
LI Hong-Lin, XU Dang-Hui, DU Guo-Zhen*()
Published:
2012-05-04
Contact:
DU Guo-Zhen
摘要:
对青藏高原东缘玛曲高寒沼泽湿地分属于15科的47种主要植物进行光合测定, 结合对不同退化类型植物群落的样方调查, 分析了各种植物之间以及不同功能群之间的净光合速率、气孔导度、蒸腾速率和水分利用效率等光合参数的差异。结果表明: 1)玛曲高寒湿地的主要物种在净光合速率、气孔导度、蒸腾速率和水分利用效率4个光合特性参数上的差异显著, 表明各植物种以各自独特的方式适应高寒湿地环境; 在功能群水平上, 各功能群之间的差异亦显著。光合速率从大到小依次为禾草>莎草>豆科和其他双子叶类杂草, 水分利用效率则是莎草>禾草>豆科和其他双子叶类杂草; 2)湿地退化导致其群落组成发生明显改变, 其中最明显的特点是双子叶类杂草的比例大大增加; 而双子叶类杂草普遍较低的水分利用效率将会增大土壤水分通过光合作用的蒸腾散失, 在大气降水对水分补充变化不大的条件下, 这将会进一步加剧群落生境的干旱化, 不利于退化湿地的恢复和附近湿地的保护。研究结果表明, 在湿地保护和退化湿地恢复过程中, 典型湿地土著物种的保存和补充具有重要意义。
李宏林, 徐当会, 杜国祯. 青藏高原高寒沼泽湿地在退化梯度上植物群落组成的改变对湿地水分状况的影响. 植物生态学报, 2012, 36(5): 403-410. DOI: 10.3724/SP.J.1258.2012.00403
LI Hong-Lin, XU Dang-Hui, DU Guo-Zhen. Effect of change of plant community composition along degradation gradients on water conditions in an alpine swamp wetland on the Qinghai-Tibetan Plateau of China. Chinese Journal of Plant Ecology, 2012, 36(5): 403-410. DOI: 10.3724/SP.J.1258.2012.00403
退化梯度 Degradation gradient | 主要植物种 Main plant species | 盖度 Coverage (%) | 高度 Height (cm) | 土壤含水量 Soil water content (v/v %) |
---|---|---|---|---|
典型湿地 Typical wetland | 乌拉薹草 Carex meyeriana、华扁穗草 Blysmus sinocompressus | 85-98 | 36.7 ± 1.44 | 56.9 ± 0.77 |
中度退化 Moderate degradation | 线叶嵩草 Kobresia capilifolia、垂穗披碱草Elymus nutans、鹅绒委陵菜 Potentilla anserina、矮地榆 Sanguisorba filiformis、甘松 Nardostachys chinensis | 90-95 | 24.3 ± 0.87 | 49.4 ± 0.63 |
重度退化 Heavy degradation | 甘肃薹草 Carex kansuensis、胡氏剪股颖 Agrostis hugoniana、鹅绒委陵菜 Potentilla anserina、长毛风毛菊 Saussurea hieracioides、巴天酸模 Rumex patientia、黄帚橐吾 Ligularia virgaurea | 87-94 | 9.5 ± 0.49 | 43.3 ± 1.00 |
表1 3个退化梯度群落特征(平均值±标准误差)
Table 1 Community features of three degradation gradients (mean ± SE)
退化梯度 Degradation gradient | 主要植物种 Main plant species | 盖度 Coverage (%) | 高度 Height (cm) | 土壤含水量 Soil water content (v/v %) |
---|---|---|---|---|
典型湿地 Typical wetland | 乌拉薹草 Carex meyeriana、华扁穗草 Blysmus sinocompressus | 85-98 | 36.7 ± 1.44 | 56.9 ± 0.77 |
中度退化 Moderate degradation | 线叶嵩草 Kobresia capilifolia、垂穗披碱草Elymus nutans、鹅绒委陵菜 Potentilla anserina、矮地榆 Sanguisorba filiformis、甘松 Nardostachys chinensis | 90-95 | 24.3 ± 0.87 | 49.4 ± 0.63 |
重度退化 Heavy degradation | 甘肃薹草 Carex kansuensis、胡氏剪股颖 Agrostis hugoniana、鹅绒委陵菜 Potentilla anserina、长毛风毛菊 Saussurea hieracioides、巴天酸模 Rumex patientia、黄帚橐吾 Ligularia virgaurea | 87-94 | 9.5 ± 0.49 | 43.3 ± 1.00 |
功能群 Functional group | 净光合速率Pn Net photosynthesis rate (μmol CO2·m-2·s-1) | 气孔导度Gs Stomatal conductance (mmol·m-2·s-1) | 蒸腾速率Tr Transpiration rate (mmol H2O·m-2·s-1) | 水分利用效率WUE Water use efficiency (μmol CO2·mmol-1 H2O) |
---|---|---|---|---|
禾草 Grass | 54.5 ± 1.79a | 0.13 ± 0.11a | 14.2 ± 0.28a | 3.9 ± 0.18b |
莎草 Sedge | 58.2 ± 2.64a | 0.41 ± 0.02b | 9.2 ± 0.52b | 6.6 ± 0.14a |
豆科 Legume | 32.0 ± 1.78b | 0.46 ± 0.02bc | 9.7 ± 0.45b | 3.5 ± 0.17bc |
其他双子叶类杂草 Other forb | 33.0 ± 0.93b | 0.53 ± 0.01c | 10.0 ± 0.16b | 3.2 ± 0.06c |
表2 不同功能群的光合参数(平均值±标准误差)
Table 2 Photosynthetic parameters of different functional groups (mean ± SE)
功能群 Functional group | 净光合速率Pn Net photosynthesis rate (μmol CO2·m-2·s-1) | 气孔导度Gs Stomatal conductance (mmol·m-2·s-1) | 蒸腾速率Tr Transpiration rate (mmol H2O·m-2·s-1) | 水分利用效率WUE Water use efficiency (μmol CO2·mmol-1 H2O) |
---|---|---|---|---|
禾草 Grass | 54.5 ± 1.79a | 0.13 ± 0.11a | 14.2 ± 0.28a | 3.9 ± 0.18b |
莎草 Sedge | 58.2 ± 2.64a | 0.41 ± 0.02b | 9.2 ± 0.52b | 6.6 ± 0.14a |
豆科 Legume | 32.0 ± 1.78b | 0.46 ± 0.02bc | 9.7 ± 0.45b | 3.5 ± 0.17bc |
其他双子叶类杂草 Other forb | 33.0 ± 0.93b | 0.53 ± 0.01c | 10.0 ± 0.16b | 3.2 ± 0.06c |
植物种 Plant species | 科 Family | Pn (μmol CO2·m-2·s-1) | Gs (mmol·m-2·s-1) | Tr (mmol H2O·m-2·s-1) | WUE (μmol CO2·mmol-1 H2O) |
---|---|---|---|---|---|
| 禾本科 | 59.4 ± 0.94 | 0.07 ± 0.00 | 12.2 ± 0.34 | 4.9 ± 0.06 |
Koeleria macrantha | Gramineae | ||||
密花早熟禾 | 禾本科 | 44.2 ± 0.85 | 0.16 ± 0.00 | 15.1 ± 0.32 | 2.9 ± 0.02 |
Poa pachyantha | Gramineae | ||||
垂穗披碱草 | 禾本科 | 46.0 ± 1.19 | 0.23 ± 0.01 | 15.8 ± 0.51 | 2.9 ± 0.02 |
Elymus nutans | Gramineae | ||||
胡氏剪股颍 | 禾本科 | 71.2 ± 1.61 | 0.06 ± 0.00 | 13.2 ± 0.18 | 5.4 ± 0.19 |
Agrostis hugoniana | Gramineae | ||||
大华嵩草 | 莎草科 | 65.0 ± 0.58 | 0.43 ± 0.02 | 10.1 ± 0.32 | 6.5 ± 0.28 |
Kobresia macrantha | Cyperaceae | ||||
乌拉薹草 | 莎草科 | 27.7 ± 1.39 | 0.17 ± 0.01 | 3.9 ± 0.22 | 7.2 ± 0.18 |
Carex meyeriana | Cyperaceae | ||||
甘肃薹草 | 莎草科 | 65.2 ± 3.25 | 0.51 ± 0.06 | 11.0 ± 1.09 | 6.4 ± 0.44 |
Carex kansuensis | Cyperaceae | ||||
华扁穗草 | 莎草科 | 70.2 ± 1.29 | 0.54 ± 0.01 | 11.6 ± 0.22 | 6.1 ± 0.11 |
Blysmus sinocompressus | Cyperaceae | ||||
线叶嵩草 | 莎草科 | 75.8 ± 0.21 | 0.40 ± 0.00 | 11.0 ± 0.05 | 6.9 ± 0.02 |
Kobresia capilifolia | Cyperaceae | ||||
唐古特岩黄芪 | 豆科 | 25.7 ± 1.13 | 0.21 ± 0.03 | 5.8 ± 0.60 | 4.8 ± 0.36 |
Hedysarum tanguticum | Leguminosae | ||||
高山豆 | 豆科 | 30.8 ± 0.54 | 0.55 ± 0.02 | 12.3 ± 0.42 | 2.5 ± 0.09 |
Tibetia himalaica | Leguminosae | ||||
多枝黄芪 | 豆科 | 40.3 ± 0.97 | 0.39 ± 0.03 | 10.7 ± 0.68 | 3.9 ± 0.21 |
Astragalus polycladus | Leguminosae | ||||
广布野豌豆 | 豆科 | 67.0 ± 1.76 | 0.63 ± 0.00 | 14.6 ± 0.09 | 4.6 ± 0.15 |
Vicia cracca | Leguminosae | ||||
甘肃棘豆 | 豆科 | 19.8 ± 0.59 | 0.61 ± 0.02 | 8.2 ± 0.22 | 2.4 ± 0.04 |
Oxytropis kansuensis | Leguminosae | ||||
莓叶委陵菜 | 蔷薇科 | 25.5 ± 2.08 | 0.15 ± 0.02 | 7.9 ± 0.83 | 3.3 ± 0.08 |
Potentilla fragarioides | Rosaceae | ||||
矮地榆 | 蔷薇科 | 37.3 ± 0.32 | 0.61 ± 0.03 | 10.6 ± 0.18 | 3.5 ± 0.04 |
Sanguisorba filiformis | Rosaceae | ||||
鹅绒委陵菜 | 蔷薇科 | 26.3 ± 0.44 | 0.54 ± 0.00 | 10.6 ± 0.17 | 2.5 ± 0.01 |
Potentilla anserine | Rosaceae | ||||
青藏大戟 | 大戟科 | 41.3 ± 2.21 | 0.07 ± 0.00 | 9.2 ± 0.32 | 4.5 ± 0.10 |
Euphorbia altotibetica | Euphorbiaceae | ||||
湿生扁蕾 | 龙胆科 | 19.5 ± 0.94 | 0.44 ± 0.01 | 9.0 ± 0.36 | 2.2 ± 0.06 |
Gentianopsis paludosa | Gentianaceae | ||||
椭圆叶花锚 | 龙胆科 | 31.3 ± 1.00 | 0.61 ± 0.04 | 9.6 ± 0.41 | 3.3 ± 0.11 |
Halenia elliptica | Gentianaceae | ||||
麻花艽 | 龙胆科 | 20.7 ± 0.85 | 0.33 ± 0.02 | 6.1 ± 0.21 | 3.5 ± 0.29 |
Gentiana straminea | Gentianaceae | ||||
长毛风毛菊 | 菊科 | 19.4 ± 0.23 | 0.71 ± 0.02 | 8.3 ± 0.10 | 2.3 ± 0.02 |
Saussurea hieracioides | Compositae | ||||
黄帚橐吾 | 菊科 | 19.8 ± 0.13 | 0.73 ± 0.02 | 9.7 ± 0.15 | 2.0 ± 0.04 |
Ligularia virgaurea | Compositae | ||||
侧茎垂头菊 | 菊科 | 23.3 ± 0.09 | 0.50 ± 0.01 | 8.0 ± 0.06 | 2.9 ± 0.01 |
Cremanthodium pleurocaule | Compositae | ||||
植物种 Plant species | 科 Family | Pn (μmol CO2·m-2·s-1) | Gs (mmol·m-2·s-1) | Tr (mmol H2O·m-2·s-1) | WUE (μmol CO2·mmol-1 H2O) |
铃铃香青 | 菊科 | 46.6 ± 1.62 | 0.55 ± 0.05 | 10.3 ± 0.69 | 5.0 ± 0.57 |
Anaphalis hancockii | Compositae | ||||
香芸火绒草 | 菊科 | 65.7 ± 4.26 | 0.75 ± 0.09 | 13.8 ± 1.40 | 5.0 ± 0.25 |
Leontopodium haplophylloides | Compositae | ||||
大籽蒿 | 菊科 | 27.0 ± 2.19 | 0.54 ± 0.03 | 9.2 ± 0.36 | 2.9 ± 0.18 |
Artemisia sieversiana | Compositae | ||||
缘毛紫菀 | 菊科 | 25.4 ± 0.10 | 0.53 ± 0.01 | 9.0 ± 0.02 | 2.8 ± 0.02 |
Aster souliei | Compositae | ||||
珠芽蓼 | 蓼科 | 19.7 ± 0.16 | 0.45 ± 0.01 | 7.1 ± 0.12 | 2.8 ± 0.07 |
Polygonum viviparum | Polygonaceae | ||||
巴天酸模 | 蓼科 | 20.2 ± 0.79 | 0.40 ± 0.03 | 7.2 ± 0.32 | 2.8 ± 0.07 |
Rumex patientia | Polygonaceae | ||||
水生酸模 | 蓼科 | 17.0 ± 0.93 | 0.26 ± 0.01 | 6.5 ± 0.13 | 2.6 ± 0.11 |
Rumex aquaticus | Polygonaceae | ||||
西伯利亚蓼 | 蓼科 | 32.0 ± 0.72 | 0.61 ± 0.01 | 10.4 ± 0.17 | 3.1 ± 0.07 |
Polygonum sibiricum | Polygonaceae | ||||
小花草玉梅 | 毛茛科 | 19.3 ± 0.59 | 0.47 ± 0.02 | 10.3 ± 0.15 | 1.9 ± 0.05 |
Anemone rivularis var. flore-minore | Ranunculaceae | ||||
矮金莲花 | 毛茛科 | 22.0 ± 0.57 | 0.52 ± 0.05 | 9.4 ± 0.47 | 2.4 ± 0.07 |
Trollius farreri | Ranunculaceae | ||||
驴蹄草 | 毛茛科 | 20.5 ± 0.36 | 0.50 ± 0.02 | 8.7 ± 0.12 | 2.4 ± 0.08 |
Caltha palustris | Ranunculaceae | ||||
条叶银莲花 | 毛茛科 | 24.7 ± 0.92 | 0.46 ± 0.01 | 8.1 ± 0.22 | 3.1 ± 0.08 |
Anemone coelestina var. linearis | Ranunculaceae | ||||
丝叶毛茛 | 毛茛科 | 88.4 ± 1.46 | 0.67 ± 0.03 | 15.0 ± 0.52 | 5.9 ± 0.11 |
Panunculus tanguticus var. capillaceus | Ranunculaceae | ||||
高山唐松草 | 毛茛科 | 71.8 ± 3.55 | 0.44 ± 0.03 | 10.9 ± 0.64 | 6.7 ± 0.17 |
Thalictrum alpinum | Ranunculaceae | ||||
独一味 | 唇形科 | 19.3 ± 0.47 | 0.50 ± 0.01 | 9.0 ± 0.05 | 2.1 ± 0.04 |
Lamiophlomis rotata | Lamiaceae | ||||
矮泽芹 | 伞形科 | 38.6 ± 1.23 | 0.61 ± 0.01 | 10.2 ± 0.18 | 3.8 ± 0.07 |
Chamaesium paradoxum | Umbelliferae | ||||
甘松 | 败酱科 | 28.8 ± 0.29 | 0.42 ± 0.03 | 8.4 ± 0.38 | 3.5 ± 0.19 |
Nardostachys chinensis | Valerianaceae | ||||
平车前 | 车前科 | 24.6 ± 0.91 | 0.61 ± 0.03 | 11.5 ± 0.32 | 2.1 ± 0.07 |
Plantago depressa | Plantaginaceae | ||||
四川马先蒿 | 玄参科 | 77.9 ± 1.85 | 1.28 ± 0.04 | 22.4 ± 0.28 | 3.5 ± 0.08 |
Pedicularis szetschuanica | Scrophulariaceae | ||||
中国马先蒿 | 玄参科 | 30.5 ± 0.28 | 0.74 ± 0.01 | 13.0 ± 0.16 | 2.4 ± 0.04 |
Pedicularis chinensis | Scrophulariaceae | ||||
拟鼻花马先蒿 | 玄参科 | 61.3 ± 3.32 | 0.53 ± 0.05 | 12.9 ± 1.06 | 4.8 ± 0.14 |
Pedicularis rhinanthoides | Scrophulariaceae | ||||
肉果草 | 玄参科 | 26.2 ± 0.76 | 0.33 ± 0.02 | 7.4 ± 0.41 | 3.6 ± 0.11 |
Lancea tibetica | Scrophulariaceae | ||||
折被韭 | 百合科 | 52.9 ± 2.23 | 0.61 ± 0.01 | 12.2 ± 0.39 | 4.3 ± 0.05 |
Allium chrysocephalum | Liliaceae |
表3 高寒沼泽湿地47种植物的净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)和水分利用效率(WUE) (平均值±标准误差)
Table 3 Net photosynthesis rate (Pn), stomatal conductance (Gs), transpiration rate (Tr) and water use efficiency (WUE) of 47 plant species in an alpine swamp wetland (mean ± SE)
植物种 Plant species | 科 Family | Pn (μmol CO2·m-2·s-1) | Gs (mmol·m-2·s-1) | Tr (mmol H2O·m-2·s-1) | WUE (μmol CO2·mmol-1 H2O) |
---|---|---|---|---|---|
| 禾本科 | 59.4 ± 0.94 | 0.07 ± 0.00 | 12.2 ± 0.34 | 4.9 ± 0.06 |
Koeleria macrantha | Gramineae | ||||
密花早熟禾 | 禾本科 | 44.2 ± 0.85 | 0.16 ± 0.00 | 15.1 ± 0.32 | 2.9 ± 0.02 |
Poa pachyantha | Gramineae | ||||
垂穗披碱草 | 禾本科 | 46.0 ± 1.19 | 0.23 ± 0.01 | 15.8 ± 0.51 | 2.9 ± 0.02 |
Elymus nutans | Gramineae | ||||
胡氏剪股颍 | 禾本科 | 71.2 ± 1.61 | 0.06 ± 0.00 | 13.2 ± 0.18 | 5.4 ± 0.19 |
Agrostis hugoniana | Gramineae | ||||
大华嵩草 | 莎草科 | 65.0 ± 0.58 | 0.43 ± 0.02 | 10.1 ± 0.32 | 6.5 ± 0.28 |
Kobresia macrantha | Cyperaceae | ||||
乌拉薹草 | 莎草科 | 27.7 ± 1.39 | 0.17 ± 0.01 | 3.9 ± 0.22 | 7.2 ± 0.18 |
Carex meyeriana | Cyperaceae | ||||
甘肃薹草 | 莎草科 | 65.2 ± 3.25 | 0.51 ± 0.06 | 11.0 ± 1.09 | 6.4 ± 0.44 |
Carex kansuensis | Cyperaceae | ||||
华扁穗草 | 莎草科 | 70.2 ± 1.29 | 0.54 ± 0.01 | 11.6 ± 0.22 | 6.1 ± 0.11 |
Blysmus sinocompressus | Cyperaceae | ||||
线叶嵩草 | 莎草科 | 75.8 ± 0.21 | 0.40 ± 0.00 | 11.0 ± 0.05 | 6.9 ± 0.02 |
Kobresia capilifolia | Cyperaceae | ||||
唐古特岩黄芪 | 豆科 | 25.7 ± 1.13 | 0.21 ± 0.03 | 5.8 ± 0.60 | 4.8 ± 0.36 |
Hedysarum tanguticum | Leguminosae | ||||
高山豆 | 豆科 | 30.8 ± 0.54 | 0.55 ± 0.02 | 12.3 ± 0.42 | 2.5 ± 0.09 |
Tibetia himalaica | Leguminosae | ||||
多枝黄芪 | 豆科 | 40.3 ± 0.97 | 0.39 ± 0.03 | 10.7 ± 0.68 | 3.9 ± 0.21 |
Astragalus polycladus | Leguminosae | ||||
广布野豌豆 | 豆科 | 67.0 ± 1.76 | 0.63 ± 0.00 | 14.6 ± 0.09 | 4.6 ± 0.15 |
Vicia cracca | Leguminosae | ||||
甘肃棘豆 | 豆科 | 19.8 ± 0.59 | 0.61 ± 0.02 | 8.2 ± 0.22 | 2.4 ± 0.04 |
Oxytropis kansuensis | Leguminosae | ||||
莓叶委陵菜 | 蔷薇科 | 25.5 ± 2.08 | 0.15 ± 0.02 | 7.9 ± 0.83 | 3.3 ± 0.08 |
Potentilla fragarioides | Rosaceae | ||||
矮地榆 | 蔷薇科 | 37.3 ± 0.32 | 0.61 ± 0.03 | 10.6 ± 0.18 | 3.5 ± 0.04 |
Sanguisorba filiformis | Rosaceae | ||||
鹅绒委陵菜 | 蔷薇科 | 26.3 ± 0.44 | 0.54 ± 0.00 | 10.6 ± 0.17 | 2.5 ± 0.01 |
Potentilla anserine | Rosaceae | ||||
青藏大戟 | 大戟科 | 41.3 ± 2.21 | 0.07 ± 0.00 | 9.2 ± 0.32 | 4.5 ± 0.10 |
Euphorbia altotibetica | Euphorbiaceae | ||||
湿生扁蕾 | 龙胆科 | 19.5 ± 0.94 | 0.44 ± 0.01 | 9.0 ± 0.36 | 2.2 ± 0.06 |
Gentianopsis paludosa | Gentianaceae | ||||
椭圆叶花锚 | 龙胆科 | 31.3 ± 1.00 | 0.61 ± 0.04 | 9.6 ± 0.41 | 3.3 ± 0.11 |
Halenia elliptica | Gentianaceae | ||||
麻花艽 | 龙胆科 | 20.7 ± 0.85 | 0.33 ± 0.02 | 6.1 ± 0.21 | 3.5 ± 0.29 |
Gentiana straminea | Gentianaceae | ||||
长毛风毛菊 | 菊科 | 19.4 ± 0.23 | 0.71 ± 0.02 | 8.3 ± 0.10 | 2.3 ± 0.02 |
Saussurea hieracioides | Compositae | ||||
黄帚橐吾 | 菊科 | 19.8 ± 0.13 | 0.73 ± 0.02 | 9.7 ± 0.15 | 2.0 ± 0.04 |
Ligularia virgaurea | Compositae | ||||
侧茎垂头菊 | 菊科 | 23.3 ± 0.09 | 0.50 ± 0.01 | 8.0 ± 0.06 | 2.9 ± 0.01 |
Cremanthodium pleurocaule | Compositae | ||||
植物种 Plant species | 科 Family | Pn (μmol CO2·m-2·s-1) | Gs (mmol·m-2·s-1) | Tr (mmol H2O·m-2·s-1) | WUE (μmol CO2·mmol-1 H2O) |
铃铃香青 | 菊科 | 46.6 ± 1.62 | 0.55 ± 0.05 | 10.3 ± 0.69 | 5.0 ± 0.57 |
Anaphalis hancockii | Compositae | ||||
香芸火绒草 | 菊科 | 65.7 ± 4.26 | 0.75 ± 0.09 | 13.8 ± 1.40 | 5.0 ± 0.25 |
Leontopodium haplophylloides | Compositae | ||||
大籽蒿 | 菊科 | 27.0 ± 2.19 | 0.54 ± 0.03 | 9.2 ± 0.36 | 2.9 ± 0.18 |
Artemisia sieversiana | Compositae | ||||
缘毛紫菀 | 菊科 | 25.4 ± 0.10 | 0.53 ± 0.01 | 9.0 ± 0.02 | 2.8 ± 0.02 |
Aster souliei | Compositae | ||||
珠芽蓼 | 蓼科 | 19.7 ± 0.16 | 0.45 ± 0.01 | 7.1 ± 0.12 | 2.8 ± 0.07 |
Polygonum viviparum | Polygonaceae | ||||
巴天酸模 | 蓼科 | 20.2 ± 0.79 | 0.40 ± 0.03 | 7.2 ± 0.32 | 2.8 ± 0.07 |
Rumex patientia | Polygonaceae | ||||
水生酸模 | 蓼科 | 17.0 ± 0.93 | 0.26 ± 0.01 | 6.5 ± 0.13 | 2.6 ± 0.11 |
Rumex aquaticus | Polygonaceae | ||||
西伯利亚蓼 | 蓼科 | 32.0 ± 0.72 | 0.61 ± 0.01 | 10.4 ± 0.17 | 3.1 ± 0.07 |
Polygonum sibiricum | Polygonaceae | ||||
小花草玉梅 | 毛茛科 | 19.3 ± 0.59 | 0.47 ± 0.02 | 10.3 ± 0.15 | 1.9 ± 0.05 |
Anemone rivularis var. flore-minore | Ranunculaceae | ||||
矮金莲花 | 毛茛科 | 22.0 ± 0.57 | 0.52 ± 0.05 | 9.4 ± 0.47 | 2.4 ± 0.07 |
Trollius farreri | Ranunculaceae | ||||
驴蹄草 | 毛茛科 | 20.5 ± 0.36 | 0.50 ± 0.02 | 8.7 ± 0.12 | 2.4 ± 0.08 |
Caltha palustris | Ranunculaceae | ||||
条叶银莲花 | 毛茛科 | 24.7 ± 0.92 | 0.46 ± 0.01 | 8.1 ± 0.22 | 3.1 ± 0.08 |
Anemone coelestina var. linearis | Ranunculaceae | ||||
丝叶毛茛 | 毛茛科 | 88.4 ± 1.46 | 0.67 ± 0.03 | 15.0 ± 0.52 | 5.9 ± 0.11 |
Panunculus tanguticus var. capillaceus | Ranunculaceae | ||||
高山唐松草 | 毛茛科 | 71.8 ± 3.55 | 0.44 ± 0.03 | 10.9 ± 0.64 | 6.7 ± 0.17 |
Thalictrum alpinum | Ranunculaceae | ||||
独一味 | 唇形科 | 19.3 ± 0.47 | 0.50 ± 0.01 | 9.0 ± 0.05 | 2.1 ± 0.04 |
Lamiophlomis rotata | Lamiaceae | ||||
矮泽芹 | 伞形科 | 38.6 ± 1.23 | 0.61 ± 0.01 | 10.2 ± 0.18 | 3.8 ± 0.07 |
Chamaesium paradoxum | Umbelliferae | ||||
甘松 | 败酱科 | 28.8 ± 0.29 | 0.42 ± 0.03 | 8.4 ± 0.38 | 3.5 ± 0.19 |
Nardostachys chinensis | Valerianaceae | ||||
平车前 | 车前科 | 24.6 ± 0.91 | 0.61 ± 0.03 | 11.5 ± 0.32 | 2.1 ± 0.07 |
Plantago depressa | Plantaginaceae | ||||
四川马先蒿 | 玄参科 | 77.9 ± 1.85 | 1.28 ± 0.04 | 22.4 ± 0.28 | 3.5 ± 0.08 |
Pedicularis szetschuanica | Scrophulariaceae | ||||
中国马先蒿 | 玄参科 | 30.5 ± 0.28 | 0.74 ± 0.01 | 13.0 ± 0.16 | 2.4 ± 0.04 |
Pedicularis chinensis | Scrophulariaceae | ||||
拟鼻花马先蒿 | 玄参科 | 61.3 ± 3.32 | 0.53 ± 0.05 | 12.9 ± 1.06 | 4.8 ± 0.14 |
Pedicularis rhinanthoides | Scrophulariaceae | ||||
肉果草 | 玄参科 | 26.2 ± 0.76 | 0.33 ± 0.02 | 7.4 ± 0.41 | 3.6 ± 0.11 |
Lancea tibetica | Scrophulariaceae | ||||
折被韭 | 百合科 | 52.9 ± 2.23 | 0.61 ± 0.01 | 12.2 ± 0.39 | 4.3 ± 0.05 |
Allium chrysocephalum | Liliaceae |
图1 不同退化梯度上湿地植物功能群的盖度(平均值±标准误差)。同一组内不同的字母表示在p < 0.05水平上差异显著。
Fig. 1 Coverage of plant functional groups in wetland along different degradation gradients (mean ± SE). Different letters in same group are significantly different at p < 0.05.
图2 水分利用效率与气孔导度(A)和净光合速率(B)之间的关系。
Fig. 2 Relationship between water use efficiency (WUE) and stomatal conductance (Gs) (A) and net photosynthesis rate (Pn) (B).
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