Acta Prataculturae Sinica ›› 2025, Vol. 34 ›› Issue (12): 62-72.DOI: 10.11686/cyxb2025021
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Chen-xu LIU1(
), Yan-tao SONG1(
), Lei SUN2, Tao PENG1, Wuyunna1
Received:2025-01-20
Revised:2025-03-17
Online:2025-12-20
Published:2025-10-20
Contact:
Yan-tao SONG
Chen-xu LIU, Yan-tao SONG, Lei SUN, Tao PENG, Wuyunna. Grazing exclusion modifies the relationship between plant community diversity and aboveground biomass in the Qiangtang grassland[J]. Acta Prataculturae Sinica, 2025, 34(12): 62-72.
样地 Plot | 围封年限 Exclosure period (a) | 经度 Longitude (E) | 纬度 Latitude (N) | 海拔 Altitude (m) |
|---|---|---|---|---|
| 嘎凉村Galiang Village | 5 | 89°36′23″ | 31°10′25″ | 4840 |
| 杂空组Zakongzu | 9 | 90°59′08″ | 30°59′07″ | 4750 |
| 谢麦珠Xiemaizhu | 13 | 89°43′14″ | 31°47′05″ | 4600 |
| 那查玉Nachayu | 17 | 89°36′20″ | 31°56′45″ | 4580 |
| 果加村Guojia Village | 21 | 89°45′10″ | 31°10′20″ | 4590 |
Table 1 Information of study area
样地 Plot | 围封年限 Exclosure period (a) | 经度 Longitude (E) | 纬度 Latitude (N) | 海拔 Altitude (m) |
|---|---|---|---|---|
| 嘎凉村Galiang Village | 5 | 89°36′23″ | 31°10′25″ | 4840 |
| 杂空组Zakongzu | 9 | 90°59′08″ | 30°59′07″ | 4750 |
| 谢麦珠Xiemaizhu | 13 | 89°43′14″ | 31°47′05″ | 4600 |
| 那查玉Nachayu | 17 | 89°36′20″ | 31°56′45″ | 4580 |
| 果加村Guojia Village | 21 | 89°45′10″ | 31°10′20″ | 4590 |
| 项目Item | ET | EP | ET×EP |
|---|---|---|---|
| 地上生物量AGB | *** | *** | ** |
| 盖度Coverage | *** | *** | ns |
| 高度Height | * | ** | * |
| 密度Density | * | *** | ns |
| 多样性指数H | ns | * | ns |
| 优势度指数D | ns | * | ns |
| 丰富度指数Ma | ns | *** | ns |
| 均匀度指数J | ns | ** | ns |
Table 2 Two-way ANOVA for enclosure treatment and enclosure duration
| 项目Item | ET | EP | ET×EP |
|---|---|---|---|
| 地上生物量AGB | *** | *** | ** |
| 盖度Coverage | *** | *** | ns |
| 高度Height | * | ** | * |
| 密度Density | * | *** | ns |
| 多样性指数H | ns | * | ns |
| 优势度指数D | ns | * | ns |
| 丰富度指数Ma | ns | *** | ns |
| 均匀度指数J | ns | ** | ns |
项目 Item | 地上生物量 AGB | 地上生物量AGB | 盖度 Coverage | 高度 Height | 密度 Density | 丰富度 Ma | 优势度 D | 多样性 H | 均匀度 J | |
|---|---|---|---|---|---|---|---|---|---|---|
| DAGB | NDAGB | |||||||||
| 地上生物量AGB | 0.88*** | 0.26 | 0.82*** | 0.18 | 0.80*** | -0.43 | -0.74** | -0.72** | -0.69** | |
| DAGB | 0.81*** | -0.23 | 0.77*** | 0.29 | 0.87*** | -0.58* | -0.84*** | -0.78*** | -0.82*** | |
| NDAGB | 0.31 | -0.18 | 0.11 | -0.22 | -0.13 | 0.29 | 0.19 | 0.12 | 0.26 | |
| 盖度Coverage | 0.57* | 0.38 | 0.20 | -0.14 | 0.74** | -0.56* | -0.70** | -0.65** | -0.72** | |
| 高度Height | -0.46 | -0.27 | -0.30 | -0.55* | 0.08 | -0.06 | -0.37 | -0.36 | -0.21 | |
| 密度Density | 0.80*** | 0.85*** | -0.21 | 0.58* | -0.36 | -0.61* | -0.81*** | -0.80*** | -0.85*** | |
| 丰富度Ma | 0.00 | 0.27 | -0.23 | 0.03 | 0.33 | 0.08 | 0.47 | 0.44 | 0.58* | |
| 优势度D | 0.27 | 0.44 | 0.04 | -0.03 | 0.35 | 0.17 | 0.77*** | 0.97*** | 0.92*** | |
| 多样性H | 0.31 | 0.51 | -0.05 | 0.09 | 0.29 | 0.26 | 0.85*** | 0.98*** | 0.90*** | |
| 均匀度J | 0.04 | -0.06 | 0.36 | -0.05 | -0.30 | -0.19 | -0.10 | 0.03 | -0.04 | |
Table 3 Correlation between plant community characteristics and alpha diversity index
项目 Item | 地上生物量 AGB | 地上生物量AGB | 盖度 Coverage | 高度 Height | 密度 Density | 丰富度 Ma | 优势度 D | 多样性 H | 均匀度 J | |
|---|---|---|---|---|---|---|---|---|---|---|
| DAGB | NDAGB | |||||||||
| 地上生物量AGB | 0.88*** | 0.26 | 0.82*** | 0.18 | 0.80*** | -0.43 | -0.74** | -0.72** | -0.69** | |
| DAGB | 0.81*** | -0.23 | 0.77*** | 0.29 | 0.87*** | -0.58* | -0.84*** | -0.78*** | -0.82*** | |
| NDAGB | 0.31 | -0.18 | 0.11 | -0.22 | -0.13 | 0.29 | 0.19 | 0.12 | 0.26 | |
| 盖度Coverage | 0.57* | 0.38 | 0.20 | -0.14 | 0.74** | -0.56* | -0.70** | -0.65** | -0.72** | |
| 高度Height | -0.46 | -0.27 | -0.30 | -0.55* | 0.08 | -0.06 | -0.37 | -0.36 | -0.21 | |
| 密度Density | 0.80*** | 0.85*** | -0.21 | 0.58* | -0.36 | -0.61* | -0.81*** | -0.80*** | -0.85*** | |
| 丰富度Ma | 0.00 | 0.27 | -0.23 | 0.03 | 0.33 | 0.08 | 0.47 | 0.44 | 0.58* | |
| 优势度D | 0.27 | 0.44 | 0.04 | -0.03 | 0.35 | 0.17 | 0.77*** | 0.97*** | 0.92*** | |
| 多样性H | 0.31 | 0.51 | -0.05 | 0.09 | 0.29 | 0.26 | 0.85*** | 0.98*** | 0.90*** | |
| 均匀度J | 0.04 | -0.06 | 0.36 | -0.05 | -0.30 | -0.19 | -0.10 | 0.03 | -0.04 | |
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