生物多样性 ›› 2020, Vol. 28 ›› Issue (12): 1523-1532. DOI: 10.17520/biods.2020352
收稿日期:
2020-09-01
接受日期:
2020-12-15
出版日期:
2020-12-20
发布日期:
2020-12-28
通讯作者:
邓建明
作者简介:
: E-mail: dengjm@lzu.edu.cn基金资助:
Yuan Sun, Weigang Hu, Shuran Yao, Ying Sun, Jianming Deng*()
Received:
2020-09-01
Accepted:
2020-12-15
Online:
2020-12-20
Published:
2020-12-28
Contact:
Jianming Deng
摘要:
生物多样性的大尺度空间分布格局及其形成机制一直是生态学和生物地理学的核心内容。黄河流域是我国重要的生态屏障, 明确该区域动植物多样性分布格局及其影响因素, 对我国黄河流域生态保护和高质量发展具有重要意义。本研究通过收集黄河流域被子植物和陆栖脊椎动物分布数据, 结合气候、环境异质性和人类活动等信息, 探讨了黄河流域被子植物和陆栖脊椎动物物种丰富度格局及其主要影响因素。结果表明, 黄河流域被子植物和陆栖脊椎动物物种丰富度在区域尺度具有相似的分布格局: 南部山地动植物物种丰富度最高, 而东部高寒区和北部干旱区物种丰富度最低。回归树模型表明, 冠层高度范围和净初级生产力范围分别是黄河流域被子植物和陆栖脊椎动物物种丰富度最重要的预测因子; 当移除空间自相关影响后, 环境异质性和气候因子依然对区域尺度的动植物物种丰富度具有较高且相似的解释度。表明环境异质性和气候共同决定了黄河流域被子植物和陆栖脊椎动物物种丰富度格局, 而人类使用土地面积并不是影响黄河流域动植物物种丰富度格局的主要因子。因此, 在未来的研究中若针对不同区域筛选出更精准的环境驱动因子或选用更多不同类别的环境异质性因子进行分析, 将有助于更深入理解物种多样性格局的成因。
孙远, 胡维刚, 姚树冉, 孙颖, 邓建明 (2020) 黄河流域被子植物和陆栖脊椎动物丰富度格局及其影响因子. 生物多样性, 28, 1523-1532. DOI: 10.17520/biods.2020352.
Yuan Sun, Weigang Hu, Shuran Yao, Ying Sun, Jianming Deng (2020) Geographic patterns and environmental determinants of angiosperm and terrestrial vertebrate species richness in the Yellow River basin. Biodiversity Science, 28, 1523-1532. DOI: 10.17520/biods.2020352.
最小值 Min. | 最大值 Max. | 平均值 Mean | |
---|---|---|---|
物种丰富度 Species richness | |||
被子植物 Angiosperms | 279 | 5,076 | 1,301 |
陆栖脊椎动物 Terrestrial vertebrates | 81 | 528 | 232 |
环境因子 Environmental variables | |||
人类使用土地面积 Human used areas (HUA, km2) | 0.00 | 9,967.42 | 2,337.76 |
年均温 Mean annual temperature (TEM, ℃) | ?7.50 | 14.53 | 5.04 |
温度季节性 Temperature seasonality (TSN, ℃) | 6.01 | 13.63 | 9.70 |
年降水量 Annual precipitation (PRE, mm) | 36.04 | 979.78 | 404.99 |
降水季节性 Precipitation seasonality (PSN, mm) | 68.62 | 117.98 | 95.84 |
净初级生产力 Net primary productivity (NPP, gC/m2) | 0.22 | 674.55 | 207.16 |
温度范围 Temperature range (TEM.ra, ℃) | 0.60 | 23.70 | 7.61 |
降水范围 Precipitation range (PRE.ra, mm) | 17.00 | 523.00 | 174.28 |
海拔范围 Elevation range (ELE.ra, m) | 33.00 | 5,048.00 | 1,356.22 |
净初级生产力范围 Net primary productivity range (NPP.ra, gC/m2) | 1.20 | 1,274.60 | 397.63 |
冠层高度范围 Canopy height range (HEI.ra, m) | 3.00 | 43.00 | 24.05 |
表1 黄河流域被子植物和陆栖脊椎动物丰富度以及各环境变量的基本统计信息
Table 1 Descriptive statistics of species richness and environmental variables in the Yellow River basin
最小值 Min. | 最大值 Max. | 平均值 Mean | |
---|---|---|---|
物种丰富度 Species richness | |||
被子植物 Angiosperms | 279 | 5,076 | 1,301 |
陆栖脊椎动物 Terrestrial vertebrates | 81 | 528 | 232 |
环境因子 Environmental variables | |||
人类使用土地面积 Human used areas (HUA, km2) | 0.00 | 9,967.42 | 2,337.76 |
年均温 Mean annual temperature (TEM, ℃) | ?7.50 | 14.53 | 5.04 |
温度季节性 Temperature seasonality (TSN, ℃) | 6.01 | 13.63 | 9.70 |
年降水量 Annual precipitation (PRE, mm) | 36.04 | 979.78 | 404.99 |
降水季节性 Precipitation seasonality (PSN, mm) | 68.62 | 117.98 | 95.84 |
净初级生产力 Net primary productivity (NPP, gC/m2) | 0.22 | 674.55 | 207.16 |
温度范围 Temperature range (TEM.ra, ℃) | 0.60 | 23.70 | 7.61 |
降水范围 Precipitation range (PRE.ra, mm) | 17.00 | 523.00 | 174.28 |
海拔范围 Elevation range (ELE.ra, m) | 33.00 | 5,048.00 | 1,356.22 |
净初级生产力范围 Net primary productivity range (NPP.ra, gC/m2) | 1.20 | 1,274.60 | 397.63 |
冠层高度范围 Canopy height range (HEI.ra, m) | 3.00 | 43.00 | 24.05 |
图2 黄河流域环境变量分布图以及被子植物和陆栖脊椎动物物种丰富度的空间格局
Fig. 2 Distribution of environmental variables and spatial pattern of species richness of angiosperms and terrestrial vertebrates in the Yellow River basin
图3 黄河流域被子植物(a)和陆栖脊椎动物(b)物种丰富度的回归树分析。 HEI.ra: 冠层高度范围; NPP.ra: 净初级生产力范围; TSN: 温度季节性; ELE.ra: 海拔范围; PRE: 年降水量; HUA: 人类使用土地面积; PSN: 降水季节性。
Fig. 3 Regression tree analysis of species richness of angiosperms (a) and terrestrial vertebrates (b) HEI.ra, Vegetation height range; NPP.ra, Net primary productivity range; TSN, Temperature seasonality; ELE.ra, Elevation range; PRE, Mean annual precipitation; HUA, Human used areas; PSN, Precipitation seasonality.
预测因子 Predictor | 被子植物 Angiosperms | 陆栖脊椎动物 Terrestrial vertebrates | ||
---|---|---|---|---|
coefOLS | coefSAR | coefOLS | coefSAR | |
人类使用土地面积 (HUA) | ? | ? | ? | ? |
年均温 (TEM) | ? | ? | 0.05** | 0.09*** |
温度季节性 (TSN) | ?0.09** | ?0.13* | 0.07* | ?0.14*** |
年降水量 (PRE) | ? | 0.11*** | 0.04 | |
降水季节性 (PSN) | ?0.17*** | ?0.13** | ?0.04* | 0 |
净初级生产力 (NPP) | ? | ? | ? | ? |
降水范围 (PRE.ra) | 0.05 | 0.07* | 0.02 | 0.02*** |
海拔范围 (ELE.ra) | 0.15*** | 0.11** | ? | ? |
净初级生产力范围 (NPP.ra) | 0.09* | 0.03 | 0.17*** | 0.01 |
冠层高度范围 (HEI.ra) | 0.07 | 0.12** | ? | 0.04 |
被子植物丰富度(Plant) | ? | ? | 0.11** | 0.04* |
AIC | 28.58 | ?26.79 | ?200.12 | ?515.81 |
R2 | 0.79 | 0.62 | 0.87 | 0.69 |
表2 被子植物和陆栖脊椎动物物种丰富度的多元线性回归和空间自回归(SAR)模型分析结果
Table 2 Results of ordinary least squares (OLS) and simultaneous autoregressive (SAR) models for species richness of angiosperms and terrestrial vertebrates
预测因子 Predictor | 被子植物 Angiosperms | 陆栖脊椎动物 Terrestrial vertebrates | ||
---|---|---|---|---|
coefOLS | coefSAR | coefOLS | coefSAR | |
人类使用土地面积 (HUA) | ? | ? | ? | ? |
年均温 (TEM) | ? | ? | 0.05** | 0.09*** |
温度季节性 (TSN) | ?0.09** | ?0.13* | 0.07* | ?0.14*** |
年降水量 (PRE) | ? | 0.11*** | 0.04 | |
降水季节性 (PSN) | ?0.17*** | ?0.13** | ?0.04* | 0 |
净初级生产力 (NPP) | ? | ? | ? | ? |
降水范围 (PRE.ra) | 0.05 | 0.07* | 0.02 | 0.02*** |
海拔范围 (ELE.ra) | 0.15*** | 0.11** | ? | ? |
净初级生产力范围 (NPP.ra) | 0.09* | 0.03 | 0.17*** | 0.01 |
冠层高度范围 (HEI.ra) | 0.07 | 0.12** | ? | 0.04 |
被子植物丰富度(Plant) | ? | ? | 0.11** | 0.04* |
AIC | 28.58 | ?26.79 | ?200.12 | ?515.81 |
R2 | 0.79 | 0.62 | 0.87 | 0.69 |
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