Chin J Plant Ecol ›› 2013, Vol. 37 ›› Issue (6): 530-541.DOI: 10.3724/SP.J.1258.2013.00054
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YAN Xin,GONG Ji-Rui(),ZHANG Zi-Yu,HUANG Yong-Mei,AN Ran,QI Yu,LIU Min
Received:
2012-11-13
Accepted:
2013-02-09
Online:
2013-11-13
Published:
2013-06-05
Contact:
GONG Ji-Rui
YAN Xin,GONG Ji-Rui,ZHANG Zi-Yu,HUANG Yong-Mei,AN Ran,QI Yu,LIU Min. Responses of photosynthetic characteristics of Stipa baicalensis to grazing disturbance[J]. Chin J Plant Ecol, 2013, 37(6): 530-541.
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URL: https://www.plant-ecology.com/EN/10.3724/SP.J.1258.2013.00054
围封样地 Enclosed grassland | 放牧样地 Grazing grassland |
---|---|
狼针草 Stipa baicalensis 羊草 Leymus chinensis 冷蒿 Artemisia frigida 柄状薹草 Carex pediformis 糙隐子草 Cleistogenes squarrosa 裂叶蒿 Artemisia tanacetifolia 草地早熟禾 Poa pratensis 阿尔泰狗娃花 Heteropappus altaicus | 狼针草 Stipa baicalensis 羊草 Leymus chinensis 冷蒿 Artemisia frigida 宽叶薹草 Carex siderosticta 细叶白头翁 Pulsatilla turczaninovii 裂叶蒿 Artemisia tanacetifoli 长柱沙参 Adenophora stenanthina 柄状薹草 Carex pediformis |
Table 1 Main species composition of two grasslands
围封样地 Enclosed grassland | 放牧样地 Grazing grassland |
---|---|
狼针草 Stipa baicalensis 羊草 Leymus chinensis 冷蒿 Artemisia frigida 柄状薹草 Carex pediformis 糙隐子草 Cleistogenes squarrosa 裂叶蒿 Artemisia tanacetifolia 草地早熟禾 Poa pratensis 阿尔泰狗娃花 Heteropappus altaicus | 狼针草 Stipa baicalensis 羊草 Leymus chinensis 冷蒿 Artemisia frigida 宽叶薹草 Carex siderosticta 细叶白头翁 Pulsatilla turczaninovii 裂叶蒿 Artemisia tanacetifoli 长柱沙参 Adenophora stenanthina 柄状薹草 Carex pediformis |
样地 Field type | 平均高度 Average height (cm) | 生物量 Biomass (g) | 盖度 Coverage (%) |
---|---|---|---|
围封样地 Enclosed grassland | 26.92 ± 0.1 | 237.500 ± 0.09 | 81.65 ± 0.06 |
放牧样地 Grazing grassland | 10.46 ± 0.1 | 99.962 ± 0.16 | 71.24 ± 0.02 |
Table 2 Plant community distribution of two grasslands (mean ± SE, n = 4)
样地 Field type | 平均高度 Average height (cm) | 生物量 Biomass (g) | 盖度 Coverage (%) |
---|---|---|---|
围封样地 Enclosed grassland | 26.92 ± 0.1 | 237.500 ± 0.09 | 81.65 ± 0.06 |
放牧样地 Grazing grassland | 10.46 ± 0.1 | 99.962 ± 0.16 | 71.24 ± 0.02 |
土壤深度 Soil depth (cm) | 围封样地 Enclosed grassland (%) | 放牧样地 Grazing grassland (%) |
---|---|---|
0-10 | 34.09 ± 0.04 | 30.66 ± 0.02 |
10-20 | 29.10 ± 0.09 | 26.00 ± 0.12 |
20-30 | 23.01 ± 0.07 | 20.49 ± 0.10 |
30-40 | 21.99 ± 0.90 | 17.93 ± 0.20 |
Table 3 Soil water content of enclosed and grazing grassland (mean ± SE, n = 4)
土壤深度 Soil depth (cm) | 围封样地 Enclosed grassland (%) | 放牧样地 Grazing grassland (%) |
---|---|---|
0-10 | 34.09 ± 0.04 | 30.66 ± 0.02 |
10-20 | 29.10 ± 0.09 | 26.00 ± 0.12 |
20-30 | 23.01 ± 0.07 | 20.49 ± 0.10 |
30-40 | 21.99 ± 0.90 | 17.93 ± 0.20 |
Fig. 6 Diurnal changes of ribulose bisphosphate carboxylase (RUBPCase) activity and electronic transport rate (ETR) of Stipa baicalensis in the two grasslands (mean ± SE).
Fig. 7 Diurnal variations of leaf mass per area (LMA), photosynthetic nitrogen-use efficiency (PNUE), photosynthetic phosphorus-use efficiency (PPUE) and foliar P content of S. baicalensis in two grasslands (mean ± SE).
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