植物生态学报 ›› 2025, Vol. 49 ›› Issue (1): 103-117.DOI: 10.17521/cjpe.2024.0162 cstr: 32100.14.cjpe.2024.0162
王雯莹1, 肖元明2,3,*(), 王小赟4, 徐嘉昕1, 马玉花1, 李强峰1, 周国英2,3,*(
)(
)
收稿日期:
2024-05-17
接受日期:
2024-10-09
出版日期:
2025-01-20
发布日期:
2025-03-08
通讯作者:
* (肖元明, xiaoyuanming16@163.com;基金资助:
WANG Wen-Ying1, XIAO Yuan-Ming2,3,*(), WANG Xiao-Yun4, XU Jia-Xin1, MA Yu-Hua1, LI Qiang-Feng1, ZHOU Guo-Ying2,3,*(
)(
)
Received:
2024-05-17
Accepted:
2024-10-09
Online:
2025-01-20
Published:
2025-03-08
Supported by:
摘要:
构建多功能群物种配置模式是恢复重度退化高寒草地的重要方式。然而, 青藏高原重度退化高寒草甸对多功能群物种配置的响应以及植物多样性与生态系统多功能性之间的关系仍未明晰。该研究以三江源自然保护区玛沁县重度退化高寒草甸为研究对象, 构建了禾草混播、禾+豆混播、禾+豆+莎混播、禾+豆+杂混播的多功能群物种配置模式, 在测定植物群落多样性、初级生产力、土壤因子的基础上, 评估了不同配置模式下生态系统多功能性, 并进一步解析植物多样性和生态系统多功能性之间的关系。结果表明: (1)在4种物种配置模式中, 禾+豆+莎混播处理具有最高的物种丰富度和Shannon-Wiener指数, Simpson指数和Pielou指数在多功能群物种配置模式下无显著差异。(2)生物量随植物功能群数增加显著增加, 在禾+豆+莎混播处理时最高。(3)禾+豆+莎混播处理下, 除pH、电导率、速效磷含量外, 其余指标均显著增加。(4)生态系统多功能性在禾+豆+莎混播处理时最高, 生态系统多功能性随植物多样性的增加表现出显著下降的趋势。上述结果表明禾+豆+莎混播处理在促进重度退化高寒草甸的土壤养分恢复、提高初级生产力方面有显著影响。研究结果为恢复三江源地区重度退化高寒草甸提供物种配置参考, 对于发展青藏高原重度退化高寒草甸生态恢复理论具有重要意义。
王雯莹, 肖元明, 王小赟, 徐嘉昕, 马玉花, 李强峰, 周国英. 多功能群物种配置模式下退化高寒草甸植物多样性与生态系统多功能性的关联. 植物生态学报, 2025, 49(1): 103-117. DOI: 10.17521/cjpe.2024.0162
WANG Wen-Ying, XIAO Yuan-Ming, WANG Xiao-Yun, XU Jia-Xin, MA Yu-Hua, LI Qiang-Feng, ZHOU Guo-Ying. Relationship between plant diversity and ecosystem multifunctionality in degraded alpine meadows under multifunctional group species combination models. Chinese Journal of Plant Ecology, 2025, 49(1): 103-117. DOI: 10.17521/cjpe.2024.0162
图1 不同功能群物种配置对植物多样性的影响(平均值±标准误, n = 5)。CK, 对照处理; G, 禾草混播; G + L, 禾+豆混播; G + L + F, 禾+豆+杂混播; G + L + S, 禾+豆+莎混播。不同小写字母表示处理间差异显著(p < 0.05)。
Fig. 1 Effects of different functional group species combinations on plant diversity (mean ± SE, n = 5). CK, control; G, grasses mixture; G + L, grass + legume mixture; G + L + F, grass + legume + forb mixture; G + L + S, grass + legume + sedge mixture. Different lowercase letters indicate significant differences between treatments (p < 0.05).
图2 不同功能群物种配置对植物生物量的影响(平均值±标准误, n = 5)。CK, 对照处理; G, 禾草混播; G + L, 禾+豆混播; G + L + F, 禾+豆+杂混播; G + L + S, 禾+豆+莎混播。不同小写字母表示处理间差异显著(p < 0.05)。
Fig. 2 Effects of different functional group species combinations on plant biomass (mean ± SE, n = 5). CK, control; G, grasses mixture; G + L, grass + legume mixture; G + L + F, grass + legume + forb mixture; G + L + S, grass + legume + sedge mixture. Different lowercase letters indicate significant differences between treatments (p < 0.05).
土壤指标 Soil index | 土壤深度 Soil depth (cm) | 对照 Control | G | G + L | G + L + S | G + L + F |
---|---|---|---|---|---|---|
铵态氮含量 NH4+-N content (mg·kg-1) | 0-10 | 4.34 ± 0.34b | 4.65 ± 0.41b | 4.79 ± 0.28b | 7.03 ± 0.43a | 6.10 ± 0.37a |
10-20 | 3.71 ± 0.31b | 4.19 ± 0.33b | 4.27 ± 0.49b | 5.90 ± 0.53a | 4.80 ± 0.37ab | |
20-30 | 2.70 ± 0.29b | 2.98 ± 0.19ab | 3.19 ± 0.20ab | 3.58 ± 0.20a | 3.32 ± 0.20ab | |
硝态氮含量 NO3--N content (mg·kg-1) | 0-10 | 31.27 ± 3.09b | 31.50 ± 1.57b | 35.62 ± 1.21b | 44.91 ± 3.09a | 38.37 ± 2.60ab |
10-20 | 17.77 ± 1.49b | 18.03 ± 0.81b | 18.17 ± 0.70b | 22.90 ± 1.08a | 18.72 ± 1.72b | |
20-30 | 15.47 ± 0.76a | 15.31 ± 0.47a | 15.71 ± 0.90a | 17.96 ± 1.56a | 17.04 ± 1.31a | |
全氮含量 TN content (g·kg-1) | 0-10 | 2.08 ± 0.06b | 2.13 ± 0.10b | 2.25 ± 0.16ab | 2.62 ± 0.15a | 2.26 ± 0.18ab |
10-20 | 1.70 ± 0.08b | 1.74 ± 0.12b | 1.78 ± 0.06ab | 2.21 ± 0.19a | 1.86 ± 0.21ab | |
20-30 | 1.52 ± 0.05b | 1.48 ± 0.07b | 1.58 ± 0.08b | 1.96 ± 0.13a | 1.60 ± 0.20b | |
全磷含量 TP content (g·kg-1) | 0-10 | 0.29 ± 0.00b | 0.30 ± 0.02b | 0.34 ± 0.02ab | 0.37 ± 0.03a | 0.35 ± 0.02ab |
10-20 | 0.31 ± 0.02b | 0.33 ± 0.02b | 0.38 ± 0.02ab | 0.41 ± 0.03a | 0.40 ± 0.02a | |
20-30 | 0.28 ± 0.00b | 0.29 ± 0.01b | 0.34 ± 0.00a | 0.36 ± 0.02a | 0.36 ± 0.02a | |
速效磷含量 AP content (mg·kg-1) | 0-10 | 5.25 ± 0.29b | 5.89 ± 0.08b | 5.96 ± 0.29b | 7.31 ± 0.37a | 7.29 ± 0.23a |
10-20 | 4.49 ± 0.15b | 4.76 ± 0.10b | 5.67 ± 0.19a | 5.72 ± 0.15a | 5.85 ± 0.31a | |
20-30 | 4.09 ± 0.22b | 4.98 ± 0.08a | 5.03 ± 0.36a | 5.53 ± 0.31a | 5.42 ± 0.31a | |
有机质含量 SOM content (g·kg-1) | 0-10 | 44.65 ± 1.18c | 51.49 ± 2.15b | 52.25 ± 1.46b | 68.74 ± 2.02a | 53.01 ± 0.80b |
10-20 | 35.17 ± 1.39b | 37.50 ± 3.36ab | 38.04 ± 1.56ab | 43.83 ± 1.49a | 41.28 ± 1.93ab | |
20-30 | 32.01 ± 1.63b | 32.69 ± 2.29b | 34.57 ± 0.65ab | 38.22 ± 0.98a | 35.52 ± 1.35ab | |
pH | 0-10 | 7.16 ± 0.13a | 7.24 ± 0.11a | 7.18 ± 0.05a | 7.12 ± 0.09a | 7.28 ± 0.06a |
10-20 | 7.17 ± 0.12a | 7.29 ± 0.09a | 7.24 ± 0.05a | 7.24 ± 0.07a | 7.33 ± 0.05a | |
20-30 | 7.21 ± 0.08a | 7.35 ± 0.09a | 7.27 ± 0.05a | 7.28 ± 0.06a | 7.33 ± 0.05a | |
电导率 EC (μs·cm-1) | 0-10 | 76.44 ± 2.16a | 62.14 ± 2.79b | 59.24 ± 2.25b | 54.90 ± 3.07b | 55.56 ± 3.49b |
10-20 | 57.28 ± 2.11a | 51.06 ± 2.89ab | 46.06 ± 1.66b | 46.46 ± 2.69b | 50.48 ± 1.63ab | |
20-30 | 53.66 ± 2.16a | 52.06 ± 2.77a | 42.10 ± 3.58b | 39.02 ± 3.31b | 38.58 ± 2.08b |
表1 不同功能群物种配置对土壤性质的影响(平均值±标准误, n = 5)
Table 1 Effects of different functional group species combinations on soil factors (mean ± SE, n = 5)
土壤指标 Soil index | 土壤深度 Soil depth (cm) | 对照 Control | G | G + L | G + L + S | G + L + F |
---|---|---|---|---|---|---|
铵态氮含量 NH4+-N content (mg·kg-1) | 0-10 | 4.34 ± 0.34b | 4.65 ± 0.41b | 4.79 ± 0.28b | 7.03 ± 0.43a | 6.10 ± 0.37a |
10-20 | 3.71 ± 0.31b | 4.19 ± 0.33b | 4.27 ± 0.49b | 5.90 ± 0.53a | 4.80 ± 0.37ab | |
20-30 | 2.70 ± 0.29b | 2.98 ± 0.19ab | 3.19 ± 0.20ab | 3.58 ± 0.20a | 3.32 ± 0.20ab | |
硝态氮含量 NO3--N content (mg·kg-1) | 0-10 | 31.27 ± 3.09b | 31.50 ± 1.57b | 35.62 ± 1.21b | 44.91 ± 3.09a | 38.37 ± 2.60ab |
10-20 | 17.77 ± 1.49b | 18.03 ± 0.81b | 18.17 ± 0.70b | 22.90 ± 1.08a | 18.72 ± 1.72b | |
20-30 | 15.47 ± 0.76a | 15.31 ± 0.47a | 15.71 ± 0.90a | 17.96 ± 1.56a | 17.04 ± 1.31a | |
全氮含量 TN content (g·kg-1) | 0-10 | 2.08 ± 0.06b | 2.13 ± 0.10b | 2.25 ± 0.16ab | 2.62 ± 0.15a | 2.26 ± 0.18ab |
10-20 | 1.70 ± 0.08b | 1.74 ± 0.12b | 1.78 ± 0.06ab | 2.21 ± 0.19a | 1.86 ± 0.21ab | |
20-30 | 1.52 ± 0.05b | 1.48 ± 0.07b | 1.58 ± 0.08b | 1.96 ± 0.13a | 1.60 ± 0.20b | |
全磷含量 TP content (g·kg-1) | 0-10 | 0.29 ± 0.00b | 0.30 ± 0.02b | 0.34 ± 0.02ab | 0.37 ± 0.03a | 0.35 ± 0.02ab |
10-20 | 0.31 ± 0.02b | 0.33 ± 0.02b | 0.38 ± 0.02ab | 0.41 ± 0.03a | 0.40 ± 0.02a | |
20-30 | 0.28 ± 0.00b | 0.29 ± 0.01b | 0.34 ± 0.00a | 0.36 ± 0.02a | 0.36 ± 0.02a | |
速效磷含量 AP content (mg·kg-1) | 0-10 | 5.25 ± 0.29b | 5.89 ± 0.08b | 5.96 ± 0.29b | 7.31 ± 0.37a | 7.29 ± 0.23a |
10-20 | 4.49 ± 0.15b | 4.76 ± 0.10b | 5.67 ± 0.19a | 5.72 ± 0.15a | 5.85 ± 0.31a | |
20-30 | 4.09 ± 0.22b | 4.98 ± 0.08a | 5.03 ± 0.36a | 5.53 ± 0.31a | 5.42 ± 0.31a | |
有机质含量 SOM content (g·kg-1) | 0-10 | 44.65 ± 1.18c | 51.49 ± 2.15b | 52.25 ± 1.46b | 68.74 ± 2.02a | 53.01 ± 0.80b |
10-20 | 35.17 ± 1.39b | 37.50 ± 3.36ab | 38.04 ± 1.56ab | 43.83 ± 1.49a | 41.28 ± 1.93ab | |
20-30 | 32.01 ± 1.63b | 32.69 ± 2.29b | 34.57 ± 0.65ab | 38.22 ± 0.98a | 35.52 ± 1.35ab | |
pH | 0-10 | 7.16 ± 0.13a | 7.24 ± 0.11a | 7.18 ± 0.05a | 7.12 ± 0.09a | 7.28 ± 0.06a |
10-20 | 7.17 ± 0.12a | 7.29 ± 0.09a | 7.24 ± 0.05a | 7.24 ± 0.07a | 7.33 ± 0.05a | |
20-30 | 7.21 ± 0.08a | 7.35 ± 0.09a | 7.27 ± 0.05a | 7.28 ± 0.06a | 7.33 ± 0.05a | |
电导率 EC (μs·cm-1) | 0-10 | 76.44 ± 2.16a | 62.14 ± 2.79b | 59.24 ± 2.25b | 54.90 ± 3.07b | 55.56 ± 3.49b |
10-20 | 57.28 ± 2.11a | 51.06 ± 2.89ab | 46.06 ± 1.66b | 46.46 ± 2.69b | 50.48 ± 1.63ab | |
20-30 | 53.66 ± 2.16a | 52.06 ± 2.77a | 42.10 ± 3.58b | 39.02 ± 3.31b | 38.58 ± 2.08b |
图3 不同功能群物种配置对生态系统多功能性的影响(平均值±标准误, n = 5)。CK, 对照处理; G, 禾草混播; G + L, 禾+豆混播; G + L + F, 禾+豆+杂混播; G + L + S, 禾+豆+莎混播。不同小写字母表示处理间存在显著差异(p < 0.05)。
Fig. 3 Effects of different functional group species combinations on ecosystem multifunctionality (mean ± SE, n = 5). CK, control; G, grasses mixture; G + L, grass + legume mixture; G + L + F, grass + legume + forb mixture; G + L + S, grass + legume + sedge mixture. Different lowercase letters indicate significant differences between treatments (p < 0.05).
图4 生态系统单一功能对生态系统多功能性的相对贡献。CK, 对照处理; G, 禾草混播; G + L, 禾+豆混播; G + L + F, 禾+豆+杂混播; G + L + S, 禾+豆+莎混播。AGB, 地上生物量; AP, 速效磷含量; BGB, 地下生物量; Cov, 盖度; H, 高度; NH4+-N, 铵态氮含量; NO3--N, 硝态氮含量; SOM, 有机质含量; TN, 全氮含量; TP, 全磷含量。
Fig. 4 Relative contributions of ecosystem single functions to ecosystem multifunctionality. CK, control; G, grasses mixture; G + L, grass + legume mixture; G + L + F, grass + legume + forb mixture; G + L + S, grass + legume + sedge mixture. AGB, aboveground biomass; AP, available phosphorus content; BGB, belowground biomass; Cov, coverage; H, height; NH4+-N, ammonium nitrogen content; NO3--N, nitrate nitrogen content; SOM, soil organic matter content; TN, total nitrogen content; TP, total phosphorus content.
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