Chin J Plant Ecol ›› 2008, Vol. 32 ›› Issue (6): 1346-1355.DOI: 10.3773/j.issn.1005-264x.2008.06.015
• Original article • Previous Articles Next Articles
WEI Ya-Fen1,2, GUO Ke1,*(), CHEN Ji-Quan1,3
Received:
2008-04-07
Accepted:
2008-05-30
Online:
2008-04-07
Published:
2008-11-30
Contact:
GUO Ke
WEI Ya-Fen, GUO Ke, CHEN Ji-Quan. EFFECT OF PRECIPITATION PATTERN ON RECRUITMENT OF SOIL WATER IN KUBUQI DESERT, NORTHWESTERN CHINA[J]. Chin J Plant Ecol, 2008, 32(6): 1346-1355.
日期 Day of year | 降雨量Rainfall (mm) | 降雨历时 Lasting time (h) | 降雨强度 Rainfall intensity 平均值±标准误差 Mean±SE (mm·h-1) | 蒸散速率 Evaportrans piration rate 平均值±标准误差 Mean±SE (W·m-2) | 单次蒸散量 Evaportrans piration (mm) |
---|---|---|---|---|---|
128 | 5.6 | 23.0 | 1.0±0.3 | 41.0±3.2 | 4.1 |
131 | 21.9 | 29.0 | 1.6±0.4 | 38.2±2.8 | 4.3 |
145 | 9.9 | 5.0 | 2.0±0.3 | 66.1±5.3 | 7.8 |
157 | 7.6 | 6.5 | 5.1±1.4 | 61.5±4.3 | 6.0 |
170 | 0.9 | 2.0 | 0.5±0.1 | 32.3±2.7 | 3.2 |
174 | 0.7 | 0.5 | 1.4±0.0 | 35.1±4.2 | 3.3 |
183 | 29 | 3.5 | 8.3±1.2 | 89.3±6.8 | 8.0 |
189 | 0.6 | 3.0 | 0.2±0.0 | 53.9±4.2 | 5.4 |
195 | 27.1 | 30.0 | 3.6±0.6 | 96.4±7.2 | 10.5 |
198 | 0.5 | 2.0 | 0.3±0.0 | 48.5±4.2 | 5.0 |
203 | 1.1 | 15.5 | 1.1±0.0 | 58.5±5.4 | 4.1 |
205 | 7.4 | 7.0 | 2.5±0.6 | 76.8±6.1 | 7.6 |
208 | 1.0 | 1.0 | 1.0±0.4 | 74.6±8.0 | 2.3 |
209 | 7.5 | 1.0 | 7.5±3.0 | 97.4±8.9 | 5.8 |
211 | 1.4 | 3.0 | 0.5±0.1 | 86.3±9.4 | 3.2 |
212 | 0.2 | 0.5 | 0.4±0.0 | 64.1±5.2 | 7.5 |
217 | 8.9 | 4.5 | 3.6±1.0 | 95.2±8.0 | 6.8 |
220 | 18.6 | 16.5 | 2.2±0.5 | 88.3±7.0 | 11.7 |
223 | 14.6 | 9.0 | 1.2±0.2 | 77.3±5.3 | 10.5 |
231 | 36.9 | 8.0 | 6.7±1.2 | 82.9±5.8 | 10.7 |
239 | 0.9 | 1.0 | 0.9±0.3 | 48.1±5.2 | 5.0 |
244 | 1.6 | 9.5 | 0.4±0.0 | 44.3±5.5 | 3.4 |
246 | 3.0 | 2.5 | 1.2±0.2 | 49.4±5.2 | 3.5 |
248 | 1.2 | 0.5 | 2.4±0.0 | 33.8±2.7 | 3.2 |
256 | 6.4 | 9.0 | 0.8±0.1 | 42.5±3.6 | 5.7 |
263 | 1.1 | 5.5 | 0.4±0.1 | 28.7±3.7 | 2.6 |
267 | 4.9 | 5.0 | 1.0±0.0 | 38.3±4.0 | 3.4 |
280 | 0.1 | 0.5 | 0.2±0.0 | 9.4±1.9 | 1.3 |
297 | 4.7 | 7.0 | 0.7±0.1 | 20.3±2.4 | 2.1 |
均值±标准误差 Mean±SE | 7.8±1.8 | 7.6±1.4 | 2.0±0.4 | 58.0±4.6 | 5.5±0.5 |
总计 Sum | 225.3 | 163.5 |
Table 1 Rainfall pattern and evaportranspiration characteristics in summer
日期 Day of year | 降雨量Rainfall (mm) | 降雨历时 Lasting time (h) | 降雨强度 Rainfall intensity 平均值±标准误差 Mean±SE (mm·h-1) | 蒸散速率 Evaportrans piration rate 平均值±标准误差 Mean±SE (W·m-2) | 单次蒸散量 Evaportrans piration (mm) |
---|---|---|---|---|---|
128 | 5.6 | 23.0 | 1.0±0.3 | 41.0±3.2 | 4.1 |
131 | 21.9 | 29.0 | 1.6±0.4 | 38.2±2.8 | 4.3 |
145 | 9.9 | 5.0 | 2.0±0.3 | 66.1±5.3 | 7.8 |
157 | 7.6 | 6.5 | 5.1±1.4 | 61.5±4.3 | 6.0 |
170 | 0.9 | 2.0 | 0.5±0.1 | 32.3±2.7 | 3.2 |
174 | 0.7 | 0.5 | 1.4±0.0 | 35.1±4.2 | 3.3 |
183 | 29 | 3.5 | 8.3±1.2 | 89.3±6.8 | 8.0 |
189 | 0.6 | 3.0 | 0.2±0.0 | 53.9±4.2 | 5.4 |
195 | 27.1 | 30.0 | 3.6±0.6 | 96.4±7.2 | 10.5 |
198 | 0.5 | 2.0 | 0.3±0.0 | 48.5±4.2 | 5.0 |
203 | 1.1 | 15.5 | 1.1±0.0 | 58.5±5.4 | 4.1 |
205 | 7.4 | 7.0 | 2.5±0.6 | 76.8±6.1 | 7.6 |
208 | 1.0 | 1.0 | 1.0±0.4 | 74.6±8.0 | 2.3 |
209 | 7.5 | 1.0 | 7.5±3.0 | 97.4±8.9 | 5.8 |
211 | 1.4 | 3.0 | 0.5±0.1 | 86.3±9.4 | 3.2 |
212 | 0.2 | 0.5 | 0.4±0.0 | 64.1±5.2 | 7.5 |
217 | 8.9 | 4.5 | 3.6±1.0 | 95.2±8.0 | 6.8 |
220 | 18.6 | 16.5 | 2.2±0.5 | 88.3±7.0 | 11.7 |
223 | 14.6 | 9.0 | 1.2±0.2 | 77.3±5.3 | 10.5 |
231 | 36.9 | 8.0 | 6.7±1.2 | 82.9±5.8 | 10.7 |
239 | 0.9 | 1.0 | 0.9±0.3 | 48.1±5.2 | 5.0 |
244 | 1.6 | 9.5 | 0.4±0.0 | 44.3±5.5 | 3.4 |
246 | 3.0 | 2.5 | 1.2±0.2 | 49.4±5.2 | 3.5 |
248 | 1.2 | 0.5 | 2.4±0.0 | 33.8±2.7 | 3.2 |
256 | 6.4 | 9.0 | 0.8±0.1 | 42.5±3.6 | 5.7 |
263 | 1.1 | 5.5 | 0.4±0.1 | 28.7±3.7 | 2.6 |
267 | 4.9 | 5.0 | 1.0±0.0 | 38.3±4.0 | 3.4 |
280 | 0.1 | 0.5 | 0.2±0.0 | 9.4±1.9 | 1.3 |
297 | 4.7 | 7.0 | 0.7±0.1 | 20.3±2.4 | 2.1 |
均值±标准误差 Mean±SE | 7.8±1.8 | 7.6±1.4 | 2.0±0.4 | 58.0±4.6 | 5.5±0.5 |
总计 Sum | 225.3 | 163.5 |
降雨级 Class | 组别 Group | 空气温度 Air temperature (℃) | 湿度 Relative humidity (%) | 可利用能量 Available energy (W·m-2) | 蒸散速率 ET rate (W·m-2) | 土壤含水量 VWC (%) |
---|---|---|---|---|---|---|
Ⅰ | 1 | 22.4±0.2a | 48.4±0.7a | 70.1±5.3a | 48.3±1.9 | 12.1±0.0a |
2 | 17.3±0.2b | 85.4±3.8b | 54.0±5.5a | 38.3±21.6 | 12.5±0.1a | |
3 | 21.0±0.3c | 56.9±1.1c | 96.0±5.9b | 49.7±2.3 | 11.7±0.0b | |
Ⅱ | 1 | 18.6±0.1a | 57.3±0.5a | 78.3±5.3a | 39.6±2.1a | 11. 9±0.0a |
2 | 10.8±0.8b | 88.8±1.9b | 38.5±6.1b | 35.8±6.7ab | 11.7±0.0b | |
3 | 15.7±0.1c | 68.3±0.7c | 93.3±5.5a | 50.1±2.4b | 11.8±0.0b | |
Ⅲ | 1 | 21.3±0.4a | 49.0±1.0a | 80.1±8.2a | 36.1±2.3a | 10.7±0.0a |
2 | 14.0±0.4b | 85.3±1.4b | 43.0±4.1b | 33.0±4.2a | 11.1±0.1b | |
3 | 18.4±0.4c | 65.4±1.2c | 124.9±9.7c | 83.6±4.0b | 11.2±0.0b | |
Ⅳ | 1 | 20.9±0.3a | 58.1±0.9a | 76.3±6.8a | 54.6±4.1a | 10.6±0.0a |
2 | 15.9±0.4b | 90.6±0.6b | 43.7±4.6b | 49.6±4.6a | 12.0±0.2b | |
3 | 18.8±0.3c | 77.2±0.8c | 131.5±13.4c | 84.05±7.55b | 13.6±0.0c | |
Ⅴ | 1 | 27.2±0.2a | 40.4±0.5a | 60.7±6.1a | 44.9±2.5a | 10.8±0.0a |
2 | 21.4±0.4b | 78.0±2.0b | 155.7±24.2b | 143.4±19.2b | 13.2±0.2b | |
3 | 20.3±0.3c | 82.7±0.8b | 70.6±9.0a | 69.1±4.7c | 14.4±0.2c |
Table 2 One-way ANOVA for meteorological factors and soil volumetric water content (VWC) before and after rainfall events
降雨级 Class | 组别 Group | 空气温度 Air temperature (℃) | 湿度 Relative humidity (%) | 可利用能量 Available energy (W·m-2) | 蒸散速率 ET rate (W·m-2) | 土壤含水量 VWC (%) |
---|---|---|---|---|---|---|
Ⅰ | 1 | 22.4±0.2a | 48.4±0.7a | 70.1±5.3a | 48.3±1.9 | 12.1±0.0a |
2 | 17.3±0.2b | 85.4±3.8b | 54.0±5.5a | 38.3±21.6 | 12.5±0.1a | |
3 | 21.0±0.3c | 56.9±1.1c | 96.0±5.9b | 49.7±2.3 | 11.7±0.0b | |
Ⅱ | 1 | 18.6±0.1a | 57.3±0.5a | 78.3±5.3a | 39.6±2.1a | 11. 9±0.0a |
2 | 10.8±0.8b | 88.8±1.9b | 38.5±6.1b | 35.8±6.7ab | 11.7±0.0b | |
3 | 15.7±0.1c | 68.3±0.7c | 93.3±5.5a | 50.1±2.4b | 11.8±0.0b | |
Ⅲ | 1 | 21.3±0.4a | 49.0±1.0a | 80.1±8.2a | 36.1±2.3a | 10.7±0.0a |
2 | 14.0±0.4b | 85.3±1.4b | 43.0±4.1b | 33.0±4.2a | 11.1±0.1b | |
3 | 18.4±0.4c | 65.4±1.2c | 124.9±9.7c | 83.6±4.0b | 11.2±0.0b | |
Ⅳ | 1 | 20.9±0.3a | 58.1±0.9a | 76.3±6.8a | 54.6±4.1a | 10.6±0.0a |
2 | 15.9±0.4b | 90.6±0.6b | 43.7±4.6b | 49.6±4.6a | 12.0±0.2b | |
3 | 18.8±0.3c | 77.2±0.8c | 131.5±13.4c | 84.05±7.55b | 13.6±0.0c | |
Ⅴ | 1 | 27.2±0.2a | 40.4±0.5a | 60.7±6.1a | 44.9±2.5a | 10.8±0.0a |
2 | 21.4±0.4b | 78.0±2.0b | 155.7±24.2b | 143.4±19.2b | 13.2±0.2b | |
3 | 20.3±0.3c | 82.7±0.8b | 70.6±9.0a | 69.1±4.7c | 14.4±0.2c |
降雨级 Class | 降雨效率 Mean efficiency (%) | 最小 Min (%) | 最大 Max (%) |
---|---|---|---|
II | 41.6±13.8 | 4.0 | 62.5 |
III | 54.9±8.4 | 27.0 | 88.2 |
IV | 68.6±7.1 | 58.2 | 82.1 |
V | 82.0±2.2 | 78.4 | 86.1 |
Table 3 Efficiency of different classes of rainfall to recruitment of root layer soil water
降雨级 Class | 降雨效率 Mean efficiency (%) | 最小 Min (%) | 最大 Max (%) |
---|---|---|---|
II | 41.6±13.8 | 4.0 | 62.5 |
III | 54.9±8.4 | 27.0 | 88.2 |
IV | 68.6±7.1 | 58.2 | 82.1 |
V | 82.0±2.2 | 78.4 | 86.1 |
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