Chin J Plant Ecol ›› 2010, Vol. 34 ›› Issue (9): 1033-1044.DOI: 10.3773/j.issn.1005-264x.2010.09.004
• Research Articles • Previous Articles Next Articles
WANG Wen-Zhi, LIU Xiao-Hong*(), CHEN Tuo, AN Wen-Ling, XU Guo-Bao
Received:
2010-03-22
Accepted:
2010-05-18
Online:
2010-03-22
Published:
2010-10-08
Contact:
LIU Xiao-Hong
WANG Wen-Zhi, LIU Xiao-Hong, CHEN Tuo, AN Wen-Ling, XU Guo-Bao. Reconstruction of regional NDVI using tree-ring width chronologies in the Qilian Mountains, northwestern China[J]. Chin J Plant Ecol, 2010, 34(9): 1033-1044.
地点 Location | 经纬度 Latitude and longitude | 海拔 Altitude (m) | 时段 Range of years | |
---|---|---|---|---|
样点 Sampling site | 昌岭山 Changlingshan | 37.4° N, 103.7° E | 2 440 | 1843-2003 |
哈溪 Haxi | 37.5° N, 102.4° E | 2 800 | 1829-2003 | |
东大山 Dongdashao | 39.1° N, 100.8° E | 2 660 | 1789-2003 | |
寺大隆 Sidalong | 38.4° N, 99.9° E | 3 360 | 1700-2003 | |
祁丰 Qifeng | 39.4° N, 98.6° E | 2 780 | 1730-2003 | |
气象站 Meteorological station | 乌鞘岭 Wushaoling | 37.2° N, 102.9° E | 3 045 | 1986-2003 |
张掖 Zhangye | 38.9° N, 100.4° E | 1 483 | 1986-2003 | |
酒泉 Jiuquan | 39.8° N, 98.5° E | 1 477 | 1986-2003 |
Table 1 Description of the study sites and the meteorological stations in the Qilian Mountains
地点 Location | 经纬度 Latitude and longitude | 海拔 Altitude (m) | 时段 Range of years | |
---|---|---|---|---|
样点 Sampling site | 昌岭山 Changlingshan | 37.4° N, 103.7° E | 2 440 | 1843-2003 |
哈溪 Haxi | 37.5° N, 102.4° E | 2 800 | 1829-2003 | |
东大山 Dongdashao | 39.1° N, 100.8° E | 2 660 | 1789-2003 | |
寺大隆 Sidalong | 38.4° N, 99.9° E | 3 360 | 1700-2003 | |
祁丰 Qifeng | 39.4° N, 98.6° E | 2 780 | 1730-2003 | |
气象站 Meteorological station | 乌鞘岭 Wushaoling | 37.2° N, 102.9° E | 3 045 | 1986-2003 |
张掖 Zhangye | 38.9° N, 100.4° E | 1 483 | 1986-2003 | |
酒泉 Jiuquan | 39.8° N, 98.5° E | 1 477 | 1986-2003 |
Fig. 3 Interannual changes and spatial distribution of the growing season NDVI in the Qilian Mountains during the period of 1986-2003. E, Eastern of the Qilian Mountains; M, Middle of the Qilian Mountains; W, Western of the Qilian Mountains.
东部 Eastern | 中部 Middle | 西部 Western | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
温度Temperature (T) | 降水量Precipitation (P) | 湿润指数P/T | 温度Temperature (T) | 降水量Precipitation (P) | 湿润指数P/T | 温度Temperature (T) | 降水量Precipitation (P) | 湿润指数P/T | ||||
月份 Month | 9p | 0.223 | 0.388 | -0.111 | 0.314 | 0.482* | 0.458 | 0.302 | 0.107 | 0.093 | ||
10p | 0.458 | 0.356 | 0.273 | 0.219 | -0.067 | -0.126 | 0.307 | 0.117 | 0.088 | |||
11p | 0.004 | -0.286 | -0.343 | -0.153 | 0.237 | 0.525* | -0.042 | -0.085 | 0.109 | |||
12p | -0.483* | -0.385 | -0.043 | -0.338 | -0.129 | 0.267 | -0.188 | 0.311 | -0.251 | |||
1 | -0.152 | 0.429 | -0.472* | 0.102 | 0.400 | -0.460 | 0.017 | 0.395 | -0.385 | |||
2 | -0.009 | -0.170 | 0.123 | 0.324 | -0.100 | -0.025 | 0.146 | -0.175 | 0.092 | |||
3 | 0.171 | 0.039 | -0.021 | 0.224 | 0.156 | 0.075 | 0.186 | -0.077 | -0.129 | |||
4 | -0.201 | -0.104 | -0.172 | 0.265 | -0.027 | -0.046 | 0.101 | 0.030 | 0.015 | |||
5 | 0.093 | 0.003 | 0 | -0.121 | 0.577* | 0.572* | 0.044 | 0.149 | 0.134 | |||
6 | -0.111 | 0.205 | 0.179 | -0.165 | 0.216 | 0.206 | -0.076 | 0.390 | 0.367 | |||
7 | 0.267 | -0.193 | -0.176 | 0.132 | 0.354 | 0.323 | 0.153 | 0.198 | 0.193 | |||
8 | 0.155 | -0.040 | -0.046 | 0.112 | 0.140 | 0.131 | 0.236 | -0.387 | -0.387 | |||
5-7 | 0.129 | -0.050 | -0.011 | -0.095 | 0.719** | 0.705** | 0.059 | 0.418 | 0.398 | |||
11p-12p | -0.239 | -0.478* | -0.368 | -0.338 | 0.158 | 0.537* | -0.172 | 0.121 | 0.090 |
Table 2 The correlation between growing season NDVI and mean temperature, precipitation and humidity index
东部 Eastern | 中部 Middle | 西部 Western | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
温度Temperature (T) | 降水量Precipitation (P) | 湿润指数P/T | 温度Temperature (T) | 降水量Precipitation (P) | 湿润指数P/T | 温度Temperature (T) | 降水量Precipitation (P) | 湿润指数P/T | ||||
月份 Month | 9p | 0.223 | 0.388 | -0.111 | 0.314 | 0.482* | 0.458 | 0.302 | 0.107 | 0.093 | ||
10p | 0.458 | 0.356 | 0.273 | 0.219 | -0.067 | -0.126 | 0.307 | 0.117 | 0.088 | |||
11p | 0.004 | -0.286 | -0.343 | -0.153 | 0.237 | 0.525* | -0.042 | -0.085 | 0.109 | |||
12p | -0.483* | -0.385 | -0.043 | -0.338 | -0.129 | 0.267 | -0.188 | 0.311 | -0.251 | |||
1 | -0.152 | 0.429 | -0.472* | 0.102 | 0.400 | -0.460 | 0.017 | 0.395 | -0.385 | |||
2 | -0.009 | -0.170 | 0.123 | 0.324 | -0.100 | -0.025 | 0.146 | -0.175 | 0.092 | |||
3 | 0.171 | 0.039 | -0.021 | 0.224 | 0.156 | 0.075 | 0.186 | -0.077 | -0.129 | |||
4 | -0.201 | -0.104 | -0.172 | 0.265 | -0.027 | -0.046 | 0.101 | 0.030 | 0.015 | |||
5 | 0.093 | 0.003 | 0 | -0.121 | 0.577* | 0.572* | 0.044 | 0.149 | 0.134 | |||
6 | -0.111 | 0.205 | 0.179 | -0.165 | 0.216 | 0.206 | -0.076 | 0.390 | 0.367 | |||
7 | 0.267 | -0.193 | -0.176 | 0.132 | 0.354 | 0.323 | 0.153 | 0.198 | 0.193 | |||
8 | 0.155 | -0.040 | -0.046 | 0.112 | 0.140 | 0.131 | 0.236 | -0.387 | -0.387 | |||
5-7 | 0.129 | -0.050 | -0.011 | -0.095 | 0.719** | 0.705** | 0.059 | 0.418 | 0.398 | |||
11p-12p | -0.239 | -0.478* | -0.368 | -0.338 | 0.158 | 0.537* | -0.172 | 0.121 | 0.090 |
Fig. 4 Correlation between the NDVI and residual (RES) chronology. A, Eastern of the Qilian Mountains. B, Middle of the Qilian Mountains. C, Western of the Qilian Mountains.
树轮残差(RES)年表第一主成分(PC1) PC1 of the tree-ring RES chronologies | |||||
---|---|---|---|---|---|
生长季NDVI NDVI in growing season | 东部 Eastern | 中部 Middle | 西部 Western | 区域 Area | |
东部 Eastern | 0.500* | ||||
中部 Middle | 0.723** | ||||
西部 Western | 0.606** | ||||
平均 Average | 0.739** |
Table 3 Correlation between growing season normalized difference vegetation index (NDVI) values and the first principal component (PC1) of RES chronology
树轮残差(RES)年表第一主成分(PC1) PC1 of the tree-ring RES chronologies | |||||
---|---|---|---|---|---|
生长季NDVI NDVI in growing season | 东部 Eastern | 中部 Middle | 西部 Western | 区域 Area | |
东部 Eastern | 0.500* | ||||
中部 Middle | 0.723** | ||||
西部 Western | 0.606** | ||||
平均 Average | 0.739** |
Fig. 6 A, Variations of reconstructed, growing season (June-August) NDVI values during 1843-2003 in the Qilian Mountains by using tree ring width RES chronologies PC1. B, Averaged NDVI from June to September during 1843-2001 in Delingha (He & Shao, 2006). C, Palmer drought severy index (PDSI) during 1891-2003 in the Qilian Mountains (Liu et al., 2010). (Average of NDVI (line) and 10 years low pass filtering (smoothed curve))
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