Chin J Plant Ecol ›› 2012, Vol. 36 ›› Issue (12): 1237-1247.DOI: 10.3724/SP.J.1258.2012.01237
Special Issue: 青藏高原植物生态学:遥感生态学
• Research Articles • Previous Articles Next Articles
YE Hui1,2, WANG Jun-Bang2,*(), HUANG Mei2, QI Shu-Hua1
Received:
2012-02-20
Accepted:
2012-05-12
Online:
2012-02-20
Published:
2012-11-28
Contact:
WANG Jun-Bang
YE Hui, WANG Jun-Bang, HUANG Mei, QI Shu-Hua. Spatial pattern of vegetation precipitation use efficiency and its response to precipitation and temperature on the Qinghai-Xizang Plateau of China[J]. Chin J Plant Ecol, 2012, 36(12): 1237-1247.
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URL: https://www.plant-ecology.com/EN/10.3724/SP.J.1258.2012.01237
Fig. 1 Location of study sites and meteorological station and digital elevation model (DEM) data (A) used in meteorological data interpolation, and vegetation map (B) as an input data in GLOPEM-CEVSA model. DBF, deciduous broad-leaved forest; DNF, deciduous needleleaf forest; EBF, evergreen broad-leaved forest; ENF, evergreen needleleaf forest.
Fig. 2 Simulated net primary productivity (NPP) by GLOPEM-CEVSA model (A) and the land product (MOD17A3) of MODIS (B) was significantly correlated with the observed above-ground net primary productivity (ANPP) on Qinghai-Xizang Plateau. LCL, lower confidence limit; UCL, upper confidence limit.
Fig. 3 Spatial patterns of annual precipitation (A), annual mean air temperature (B), net primary productivity (NPP) (C) and precipitation use efficiency (PUE) (D) of the vegetation on the Qinghai-Xizang Plateau from 2000 to 2008.
Fig. 4 Change pattern of precipitation use efficiency (PUE) with precipitation in the whole region (A) and different temperature areas (B) in the Qinghai-Xizang Plateau.
植被类型 Vegetation type | 面积 Area (×104 km2) | 年降水量 Annual precipitation (mm) | NPP (g C·m-2·a-1) | PUE (g C·m-2·mm-1) | |
---|---|---|---|---|---|
平均值 Mean | 标准偏差 SD | ||||
常绿针叶林 ENF | 2.16 | 713.37 | 318.26 | 0.481 | 0.444 |
常绿阔叶林 EBF | 6.77 | 753.59 | 352.16 | 0.507 | 0.422 |
落叶阔叶林 DBF | 0.21 | 719.68 | 173.93 | 0.255 | 0.206 |
草地 Grass | 119.41 | 451.17 | 55.26 | 0.107 | 0.149 |
灌丛 Shrub | 33.18 | 481.06 | 56.77 | 0.116 | 0.112 |
荒漠 Desert | 22.09 | 218.70 | 0.49 | 0.002 | 0.016 |
农田 Cropland | 0.86 | 658.27 | 432.33 | 0.690 | 0.586 |
Table 1 Annual precipitation, net primary production (NPP) and precipitation use efficiency (PUE) for different vegetation distribution regions on the Qinghai-Xizang Plateau from 2000 to 2008
植被类型 Vegetation type | 面积 Area (×104 km2) | 年降水量 Annual precipitation (mm) | NPP (g C·m-2·a-1) | PUE (g C·m-2·mm-1) | |
---|---|---|---|---|---|
平均值 Mean | 标准偏差 SD | ||||
常绿针叶林 ENF | 2.16 | 713.37 | 318.26 | 0.481 | 0.444 |
常绿阔叶林 EBF | 6.77 | 753.59 | 352.16 | 0.507 | 0.422 |
落叶阔叶林 DBF | 0.21 | 719.68 | 173.93 | 0.255 | 0.206 |
草地 Grass | 119.41 | 451.17 | 55.26 | 0.107 | 0.149 |
灌丛 Shrub | 33.18 | 481.06 | 56.77 | 0.116 | 0.112 |
荒漠 Desert | 22.09 | 218.70 | 0.49 | 0.002 | 0.016 |
农田 Cropland | 0.86 | 658.27 | 432.33 | 0.690 | 0.586 |
植被类型 Vegetation type | 面积 Area (×104 km2) | 年降水量 Annual precipitation (mm) | NPP (g C·m-2·a-1) | PUE (g C·m-2·mm-1) | |
---|---|---|---|---|---|
平均值 Mean | 标准偏差 SD | ||||
高寒草原 Alpine steppe | 26.47 | 289.75 | 9.42 | 0.033 | 0.046 |
高寒荒漠 Alpine desert | 0.63 | 316.54 | 0.80 | 0.003 | 0.012 |
高寒草甸 Alpine meadow | 38.96 | 507.62 | 53.98 | 0.100 | 0.103 |
Table 2 Annual precipitation, net primary production (NPP) and precipitation use efficiency (PUE) for the region of main grass type regions on the Qinghai-Xizang Plateau from 2000 to 2008
植被类型 Vegetation type | 面积 Area (×104 km2) | 年降水量 Annual precipitation (mm) | NPP (g C·m-2·a-1) | PUE (g C·m-2·mm-1) | |
---|---|---|---|---|---|
平均值 Mean | 标准偏差 SD | ||||
高寒草原 Alpine steppe | 26.47 | 289.75 | 9.42 | 0.033 | 0.046 |
高寒荒漠 Alpine desert | 0.63 | 316.54 | 0.80 | 0.003 | 0.012 |
高寒草甸 Alpine meadow | 38.96 | 507.62 | 53.98 | 0.100 | 0.103 |
Fig. 5 Relationships between precipitation use efficiency (PUE) and air temperature and precipitation in the areas with mean annual precipitation of 300-470 mm (A) and 470-535 mm (B).
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