Chin J Plant Ecol ›› 2008, Vol. 32 ›› Issue (6): 1312-1322.DOI: 10.3773/j.issn.1005-264x.2008.06.012
• Original article • Previous Articles Next Articles
ZHANG Feng, ZHOU Guang-Sheng(), WANG Yu-Hui
Received:
2008-03-10
Accepted:
2008-04-24
Online:
2008-03-10
Published:
2008-11-30
Contact:
ZHOU Guang-Sheng
ZHANG Feng, ZHOU Guang-Sheng, WANG Yu-Hui. PHENOLOGICAL CALENDAR OF STIPA KRYLOVII STEPPE IN INNER MONGOLIA, CHINA AND ITS CORRELATION WITH CLIMATIC VARIABLES[J]. Chin J Plant Ecol, 2008, 32(6): 1312-1322.
平均气温 Mean air temperature | 平均最高气温 Mean maximum air temperature | 平均最低气温 Mean minimum air temperature | 降水量 Precipitation | |||||
---|---|---|---|---|---|---|---|---|
斜率 Intercept | R2 | 斜率 Intercept | R2 | 斜率 Intercept | R2 | 斜率 Intercept | R2 | |
年际水平 Annual | 0.115 | 0.466** | 0.117 | 0.411** | 0.113 | 0.472** | -3.988 | 0.071 |
生长季 Seasonal | 0.120 | 0.504*** | 0.117 | 0.416** | 0.122 | 0.555*** | -3.414 | 0.055 |
非生长季 Non-seasonal | 0.114 | 0.174 | 0.121 | 0.157 | 0.106 | 0.178 | -0.575 | 0.081 |
春Spring | 0.160 | 0.434** | 0.156 | 0.366** | 0.164 | 0.468** | 0.621 | 0.019 |
夏Summer | 0.118 | 0.279* | 0.117 | 0.187 | 0.119 | 0.395** | -2.393 | 0.031 |
秋Autumm | 0.042 | 0.026 | 0.046 | 0.030 | 0.038 | 0.019 | -2.104 | 0.290* |
冬Winter | 0.146 | 0.178 | 0.158 | 0.164 | 0.135 | 0.178 | -0.036 | 0.035 |
Table 1 The trends of mean air temperature, mean maximum air temperature, mean minimum air temperature and precipitation from 1985 to 2002 in Inner Mongolian Stipa krylovii steppe
平均气温 Mean air temperature | 平均最高气温 Mean maximum air temperature | 平均最低气温 Mean minimum air temperature | 降水量 Precipitation | |||||
---|---|---|---|---|---|---|---|---|
斜率 Intercept | R2 | 斜率 Intercept | R2 | 斜率 Intercept | R2 | 斜率 Intercept | R2 | |
年际水平 Annual | 0.115 | 0.466** | 0.117 | 0.411** | 0.113 | 0.472** | -3.988 | 0.071 |
生长季 Seasonal | 0.120 | 0.504*** | 0.117 | 0.416** | 0.122 | 0.555*** | -3.414 | 0.055 |
非生长季 Non-seasonal | 0.114 | 0.174 | 0.121 | 0.157 | 0.106 | 0.178 | -0.575 | 0.081 |
春Spring | 0.160 | 0.434** | 0.156 | 0.366** | 0.164 | 0.468** | 0.621 | 0.019 |
夏Summer | 0.118 | 0.279* | 0.117 | 0.187 | 0.119 | 0.395** | -2.393 | 0.031 |
秋Autumm | 0.042 | 0.026 | 0.046 | 0.030 | 0.038 | 0.019 | -2.104 | 0.290* |
冬Winter | 0.146 | 0.178 | 0.158 | 0.164 | 0.135 | 0.178 | -0.036 | 0.035 |
1月 | 2月 | 3月 | 4月 | 5月 | 6月 | 7月 | 8月 | 9月 | 10月 | 11月 | 12月 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Jan. | Feb. | Mar. | Apr. | May | Jun. | Jul. | Aug. | Sept. | Oct. | Nov. | Dec. | |
月均温 Monthly mean temperature (℃) | ||||||||||||
平均值Mean | -17.6 | -13.0 | -4.7 | 5.9 | 13.5 | 19.1 | 21.7 | 20.1 | 13.5 | 4.6 | -6.3 | -14.6 |
标准误差SD | 2.5 | 3.1 | 2.8 | 1.8 | 1.1 | 1.4 | 1.6 | 1.3 | 1.4 | 1.8 | 2.7 | 2.3 |
变化趋势Trend | +0.9 | +2.8 | +2.9 | +1.1 | +0.7 | +1.0 | +1.8 | +0.8 | +1.8 | -0.9 | +0.4 | +0.6 |
p | - | <0.05 | <0.05 | - | - | - | <0.01 | - | <0.01 | - | - | - |
月均最低温 Monthly mean minimum air temperature (℃) | ||||||||||||
平均值Mean | -23.2 | -19.5 | -11.4 | -1.4 | 6.1 | 12.3 | 15.9 | 13.9 | 6.6 | -2.1 | -12.3 | -20.0 |
标准误差SD | 2.2 | 2.9 | 2.7 | 1.6 | 1.2 | 1.4 | 1.3 | 1.1 | 1.6 | 1.6 | 2.5 | 2.2 |
变化趋势Trend | +0.1 | +0.3 | +0.3 | +0.1 | +0.1 | +0.1 | +0.2 | 0.0 | +0.1 | -0.1 | 0.0 | 0.0 |
p | - | <.05 | <.05 | - | <.05 | <.05 | <.001 | - | <.05 | - | - | - |
月均最高温 Monthly mean maximum air temperature (℃) | ||||||||||||
平均值Mean | -12.1 | -6.6 | 2.0 | 13.3 | 20.9 | 25.8 | 27.5 | 26.4 | 20.5 | 11.4 | -0.3 | -9.2 |
标准误差SD | 2.8 | 3.5 | 2.9 | 2.1 | 1.2 | 1.5 | 2.0 | 1.9 | 1.5 | 2.1 | 3.0 | 2.5 |
变化趋势Trend | +0.1 | +0.3 | +0.3 | +0.1 | 0.0 | +0.1 | +0.2 | +0.1 | +0.2 | -0.1 | 0.0 | +0.1 |
p | - | <.05 | <.05 | - | - | - | <.05 | - | <.001 | - | - | - |
月降水量 Monthly precipitation (mm) | ||||||||||||
平均值Mean | 2.4 | 2.4 | 5.8 | 5.9 | 24.5 | 46.8 | 88.0 | 59.3 | 21.3 | 9.9 | 6.4 | 3.3 |
标准误差SD | 1.8 | 2.1 | 5.2 | 5.0 | 22.1 | 23.5 | 43.5 | 41.1 | 17.9 | 10.2 | 6.5 | 2.0 |
变化趋势Trend | 0.0 | -0.2 | -0.2 | 0.05 | 0.8 | 0.9 | -1.3 | -2.0 | -1.8 | -0.1 | -0.2 | 0.05 |
p | - | - | - | - | - | - | - | - | <0.05 | - | - | - |
Table 2 Monthly mean air temperature, monthly mean minimum air temperature, monthly mean maximum air temperature and monthly precipitation in Inner Mongolian Stipa krylovii steppe, as well as trends per decade during 1995 to 2002
1月 | 2月 | 3月 | 4月 | 5月 | 6月 | 7月 | 8月 | 9月 | 10月 | 11月 | 12月 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Jan. | Feb. | Mar. | Apr. | May | Jun. | Jul. | Aug. | Sept. | Oct. | Nov. | Dec. | |
月均温 Monthly mean temperature (℃) | ||||||||||||
平均值Mean | -17.6 | -13.0 | -4.7 | 5.9 | 13.5 | 19.1 | 21.7 | 20.1 | 13.5 | 4.6 | -6.3 | -14.6 |
标准误差SD | 2.5 | 3.1 | 2.8 | 1.8 | 1.1 | 1.4 | 1.6 | 1.3 | 1.4 | 1.8 | 2.7 | 2.3 |
变化趋势Trend | +0.9 | +2.8 | +2.9 | +1.1 | +0.7 | +1.0 | +1.8 | +0.8 | +1.8 | -0.9 | +0.4 | +0.6 |
p | - | <0.05 | <0.05 | - | - | - | <0.01 | - | <0.01 | - | - | - |
月均最低温 Monthly mean minimum air temperature (℃) | ||||||||||||
平均值Mean | -23.2 | -19.5 | -11.4 | -1.4 | 6.1 | 12.3 | 15.9 | 13.9 | 6.6 | -2.1 | -12.3 | -20.0 |
标准误差SD | 2.2 | 2.9 | 2.7 | 1.6 | 1.2 | 1.4 | 1.3 | 1.1 | 1.6 | 1.6 | 2.5 | 2.2 |
变化趋势Trend | +0.1 | +0.3 | +0.3 | +0.1 | +0.1 | +0.1 | +0.2 | 0.0 | +0.1 | -0.1 | 0.0 | 0.0 |
p | - | <.05 | <.05 | - | <.05 | <.05 | <.001 | - | <.05 | - | - | - |
月均最高温 Monthly mean maximum air temperature (℃) | ||||||||||||
平均值Mean | -12.1 | -6.6 | 2.0 | 13.3 | 20.9 | 25.8 | 27.5 | 26.4 | 20.5 | 11.4 | -0.3 | -9.2 |
标准误差SD | 2.8 | 3.5 | 2.9 | 2.1 | 1.2 | 1.5 | 2.0 | 1.9 | 1.5 | 2.1 | 3.0 | 2.5 |
变化趋势Trend | +0.1 | +0.3 | +0.3 | +0.1 | 0.0 | +0.1 | +0.2 | +0.1 | +0.2 | -0.1 | 0.0 | +0.1 |
p | - | <.05 | <.05 | - | - | - | <.05 | - | <.001 | - | - | - |
月降水量 Monthly precipitation (mm) | ||||||||||||
平均值Mean | 2.4 | 2.4 | 5.8 | 5.9 | 24.5 | 46.8 | 88.0 | 59.3 | 21.3 | 9.9 | 6.4 | 3.3 |
标准误差SD | 1.8 | 2.1 | 5.2 | 5.0 | 22.1 | 23.5 | 43.5 | 41.1 | 17.9 | 10.2 | 6.5 | 2.0 |
变化趋势Trend | 0.0 | -0.2 | -0.2 | 0.05 | 0.8 | 0.9 | -1.3 | -2.0 | -1.8 | -0.1 | -0.2 | 0.05 |
p | - | - | - | - | - | - | - | - | <0.05 | - | - | - |
物候期 Phenophase | 平均日期Average date (Julian day) | 温度 T(℃) | 最早日期 Min. date | 最晚日期 Max. date | 变幅 Extent | 标准偏差 SD |
---|---|---|---|---|---|---|
P1 | 2-Apr. (93) | 2.8 | 1990-21-Mar. (81) | 2001-26-Apr. (117) | 36 | 10.4 |
P2 | 7-Apr. (99) | 3.3 | 1997-23-Mar. (83) | 2000-12-May (133) | 50 | 12.6 |
P3 | 12-Apr. (103) | 4.8 | 1990-28-Mar. (88) | 2002-3-May (124) | 36 | 8.6 |
P4 | 14-Apr. (106) | 7.3 | 1990-24-Mar. (84) | 2002-11-May (132) | 48 | 10.2 |
P5 | 16-Apr. (108) | 7.7 | 1990-1-Apr. (92) | 2002-5-May (126) | 34 | 7.9 |
P6 | 24-Apr. (115) | 6.6 | 1990-3-Apr. (94) | 1989-21-Jun. (173) | 79 | 18.3 |
P7 | 29-Apr. (121) | 10.5 | 1990-17-Apr. (108) | 1989-28-May. (149) | 41 | 9.7 |
P8 | 1-Jul. (183) | 20.6 | 2001-2-Jun. (154) | 1994-5-Aug. (218) | 64 | 18.8 |
P9 | 12-Jul. (194) | 21.4 | 1996-15-Apr. (106) | 1997-1-Aug. (214) | 108 | 27.5 |
P10 | 23-Jul. (205) | 21.9 | 1993-30-Jun. (182) | 1995-15-Aug. (228) | 46 | 13.6 |
P11 | 2-Aug. (215) | 21.7 | 1986-19-Jul. (201) | 2000-28-Aug. (241) | 40 | 9.7 |
P12 | 3-Aug. (216) | 23.0 | 1993-21-Jul. (203) | 1985-15-Sept. (259) | 56 | 16.2 |
P13 | 6-Aug. (220) | 20.2 | 2002-9-Jul. (191) | 1985-6-Sept. (250) | 59 | 13.5 |
P14 | 16-Aug. (229) | 19.7 | 2002-21-Jul. (203) | 1987-14-Sept. (258) | 55 | 15.8 |
P15 | 18-Aug. (231) | 18.8 | 1993-23-Jul. (205) | 1995/1996-2-Sept. (246) | 41 | 12.1 |
P16 | 20-Aug. (234) | 19.4 | 1992-13-Aug. (226) | 1987-29-Aug. (242) | 16 | 4.4 |
P17 | 23-Aug. (236) | 19.0 | 1990-1-Aug. (214) | 1987-30-Sept. (274) | 60 | 19.4 |
P18 | 24-Aug. (237) | 19.1 | 2002-1-Aug. (214) | 1989-29-Sept. (273) | 59 | 13.3 |
P19 | 31-Aug. (244) | 18.9 | 1992-19-Aug. (232) | 1985-15-Sept. (259) | 27 | 9.0 |
P20 | 6-Sept. (250) | 16.6 | 2002-15-Aug. (228) | 1987-29-Sept. (273) | 45 | 13.2 |
P21 | 9-Sept. (253) | 14.3 | 1986-17-Aug. (230) | 1996-26-Sept. (270) | 40 | 10.2 |
P22 | 11-Sept. (255) | 14.5 | 1998-26-Aug. (239) | 1989-5-Oct. (279) | 40 | 13.0 |
P23 | 19-Sept. (263) | 10.8 | 2002-30-Aug. (243) | 2000-24-Oct. (298) | 55 | 13.9 |
P24 | 28-Sept. (273) | 10.8 | 1998-17-Sept. (261) | 1993-29-Oct. (303) | 42 | 10.9 |
P25 | 29-Sept. (274) | 9.2 | 2002-4-Sept. (248) | 2000-22-Oct. (296) | 48 | 15.9 |
P26 | 3-Oct. (277) | 8.9 | 2001-6-Sept. (250) | 2000-22-Oct. (296) | 46 | 14.7 |
P27 | 4-Oct. (278) | 7.9 | 1991-8-Sept. (252) | 2000-23-Oct. (297) | 45 | 12.5 |
P28 | 6-Oct. (280) | 8.0 | 1992-26-Sept. (270) | 1996-21-Oct. (295) | 25 | 7.5 |
P29 | 7-Oct. (281) | 7.6 | 1994-23-Sept. (267) | 1998-17-Oct. (291) | 24 | 7.4 |
P30 | 11-Oct. (285) | 7.1 | 1994-1-Oct. (275) | 1987-19-Oct. (293) | 18 | 5.8 |
P31 | 22-Oct. (296) | 3.3 | 2001-24-Sept. (268) | 1997/1998-30-Oct. (304) | 36 | 10.2 |
Table 3 Phenological time series: average event dates, daily temperature, extreme phenophases, event data, variable amplitude and standard deviation in Inner Mongolian Stipa krylovii steppe from 1985 to 2002
物候期 Phenophase | 平均日期Average date (Julian day) | 温度 T(℃) | 最早日期 Min. date | 最晚日期 Max. date | 变幅 Extent | 标准偏差 SD |
---|---|---|---|---|---|---|
P1 | 2-Apr. (93) | 2.8 | 1990-21-Mar. (81) | 2001-26-Apr. (117) | 36 | 10.4 |
P2 | 7-Apr. (99) | 3.3 | 1997-23-Mar. (83) | 2000-12-May (133) | 50 | 12.6 |
P3 | 12-Apr. (103) | 4.8 | 1990-28-Mar. (88) | 2002-3-May (124) | 36 | 8.6 |
P4 | 14-Apr. (106) | 7.3 | 1990-24-Mar. (84) | 2002-11-May (132) | 48 | 10.2 |
P5 | 16-Apr. (108) | 7.7 | 1990-1-Apr. (92) | 2002-5-May (126) | 34 | 7.9 |
P6 | 24-Apr. (115) | 6.6 | 1990-3-Apr. (94) | 1989-21-Jun. (173) | 79 | 18.3 |
P7 | 29-Apr. (121) | 10.5 | 1990-17-Apr. (108) | 1989-28-May. (149) | 41 | 9.7 |
P8 | 1-Jul. (183) | 20.6 | 2001-2-Jun. (154) | 1994-5-Aug. (218) | 64 | 18.8 |
P9 | 12-Jul. (194) | 21.4 | 1996-15-Apr. (106) | 1997-1-Aug. (214) | 108 | 27.5 |
P10 | 23-Jul. (205) | 21.9 | 1993-30-Jun. (182) | 1995-15-Aug. (228) | 46 | 13.6 |
P11 | 2-Aug. (215) | 21.7 | 1986-19-Jul. (201) | 2000-28-Aug. (241) | 40 | 9.7 |
P12 | 3-Aug. (216) | 23.0 | 1993-21-Jul. (203) | 1985-15-Sept. (259) | 56 | 16.2 |
P13 | 6-Aug. (220) | 20.2 | 2002-9-Jul. (191) | 1985-6-Sept. (250) | 59 | 13.5 |
P14 | 16-Aug. (229) | 19.7 | 2002-21-Jul. (203) | 1987-14-Sept. (258) | 55 | 15.8 |
P15 | 18-Aug. (231) | 18.8 | 1993-23-Jul. (205) | 1995/1996-2-Sept. (246) | 41 | 12.1 |
P16 | 20-Aug. (234) | 19.4 | 1992-13-Aug. (226) | 1987-29-Aug. (242) | 16 | 4.4 |
P17 | 23-Aug. (236) | 19.0 | 1990-1-Aug. (214) | 1987-30-Sept. (274) | 60 | 19.4 |
P18 | 24-Aug. (237) | 19.1 | 2002-1-Aug. (214) | 1989-29-Sept. (273) | 59 | 13.3 |
P19 | 31-Aug. (244) | 18.9 | 1992-19-Aug. (232) | 1985-15-Sept. (259) | 27 | 9.0 |
P20 | 6-Sept. (250) | 16.6 | 2002-15-Aug. (228) | 1987-29-Sept. (273) | 45 | 13.2 |
P21 | 9-Sept. (253) | 14.3 | 1986-17-Aug. (230) | 1996-26-Sept. (270) | 40 | 10.2 |
P22 | 11-Sept. (255) | 14.5 | 1998-26-Aug. (239) | 1989-5-Oct. (279) | 40 | 13.0 |
P23 | 19-Sept. (263) | 10.8 | 2002-30-Aug. (243) | 2000-24-Oct. (298) | 55 | 13.9 |
P24 | 28-Sept. (273) | 10.8 | 1998-17-Sept. (261) | 1993-29-Oct. (303) | 42 | 10.9 |
P25 | 29-Sept. (274) | 9.2 | 2002-4-Sept. (248) | 2000-22-Oct. (296) | 48 | 15.9 |
P26 | 3-Oct. (277) | 8.9 | 2001-6-Sept. (250) | 2000-22-Oct. (296) | 46 | 14.7 |
P27 | 4-Oct. (278) | 7.9 | 1991-8-Sept. (252) | 2000-23-Oct. (297) | 45 | 12.5 |
P28 | 6-Oct. (280) | 8.0 | 1992-26-Sept. (270) | 1996-21-Oct. (295) | 25 | 7.5 |
P29 | 7-Oct. (281) | 7.6 | 1994-23-Sept. (267) | 1998-17-Oct. (291) | 24 | 7.4 |
P30 | 11-Oct. (285) | 7.1 | 1994-1-Oct. (275) | 1987-19-Oct. (293) | 18 | 5.8 |
P31 | 22-Oct. (296) | 3.3 | 2001-24-Sept. (268) | 1997/1998-30-Oct. (304) | 36 | 10.2 |
物候期 Phenophase | 日期 Date | 相关系数(r) Correlation coefficient | 月份 Month |
---|---|---|---|
P1 | 2-Apr. | 0.594*/0.644** | Mar.15b/Apr.15a |
P3 | 12-Apr. | 0.548*/0.637**/0.608**/0.602*/0.532* | Jan.15b//Feb.15a/Feb15b/Mar.15a/Mar.15b |
P4 | 14-Apr. | 0.508*/0.675** | Mar.15a/Mar.15b |
P5 | 16-Apr. | 0.585*/0.554*/0.564*/0.495* | Feb.15a/Feb.15b/Mar.15a/Mar.15b |
P7 | 29-Apr. | 0.512* | Mar.15b |
P12 | 3-Aug. | -0.617* | Jul.15b |
P13 | 6-Aug. | -0.514*/-0.711*/-0.604* | Jul.15a/Jul.15b/Aug.15a |
P14 | 16-Aug. | -0.745**/-0.771**/-0.660* | Jul.15b/Aug.15a/Aug.15b |
P17 | 23-Aug. | -0.853**/-0.834**/-0.685* | Jul.15b/Aug.15a/Aug.15b |
P18 | 24-Aug. | -0.531*/-0.576*/-0.672**/-0.574* | Jul.15a/Jul.15b/Aug.15a/Aug.15b |
P19 | 31-Aug. | -0.665*/-0.75** | Jul.15a/Jul.15b |
P20 | 6-Sept. | -0.544*/-0.64*/-0.578* | Jul.15a/Jul.15b/Aug.15a |
P22 | 11-Sept. | -0.894**/-0.891**/-0.788**/-0.613* | Jul.15b/Aug.15a/Aug.15b/Sept.15a |
P23 | 19-Sept. | -0.668**/-0.69**/-0.621**/-0.486* | Jul.15a/Jul.15b/Aug.15a/Aug.15b |
P25 | 29-Sept. | -0.672*/-0.703*/-0.612* | Jul.15a/Jul.15b/Aug.15a |
P26 | 3-Oct. | -0.642** | Jul.15a |
P27 | 4-Oct. | -0.71**/-0.546* | Jul.15a/Jul.15b |
Table 4 Correlation between phenological phases and light
物候期 Phenophase | 日期 Date | 相关系数(r) Correlation coefficient | 月份 Month |
---|---|---|---|
P1 | 2-Apr. | 0.594*/0.644** | Mar.15b/Apr.15a |
P3 | 12-Apr. | 0.548*/0.637**/0.608**/0.602*/0.532* | Jan.15b//Feb.15a/Feb15b/Mar.15a/Mar.15b |
P4 | 14-Apr. | 0.508*/0.675** | Mar.15a/Mar.15b |
P5 | 16-Apr. | 0.585*/0.554*/0.564*/0.495* | Feb.15a/Feb.15b/Mar.15a/Mar.15b |
P7 | 29-Apr. | 0.512* | Mar.15b |
P12 | 3-Aug. | -0.617* | Jul.15b |
P13 | 6-Aug. | -0.514*/-0.711*/-0.604* | Jul.15a/Jul.15b/Aug.15a |
P14 | 16-Aug. | -0.745**/-0.771**/-0.660* | Jul.15b/Aug.15a/Aug.15b |
P17 | 23-Aug. | -0.853**/-0.834**/-0.685* | Jul.15b/Aug.15a/Aug.15b |
P18 | 24-Aug. | -0.531*/-0.576*/-0.672**/-0.574* | Jul.15a/Jul.15b/Aug.15a/Aug.15b |
P19 | 31-Aug. | -0.665*/-0.75** | Jul.15a/Jul.15b |
P20 | 6-Sept. | -0.544*/-0.64*/-0.578* | Jul.15a/Jul.15b/Aug.15a |
P22 | 11-Sept. | -0.894**/-0.891**/-0.788**/-0.613* | Jul.15b/Aug.15a/Aug.15b/Sept.15a |
P23 | 19-Sept. | -0.668**/-0.69**/-0.621**/-0.486* | Jul.15a/Jul.15b/Aug.15a/Aug.15b |
P25 | 29-Sept. | -0.672*/-0.703*/-0.612* | Jul.15a/Jul.15b/Aug.15a |
P26 | 3-Oct. | -0.642** | Jul.15a |
P27 | 4-Oct. | -0.71**/-0.546* | Jul.15a/Jul.15b |
物候期Phenophase | 日期 Date | 相关系数(r) Correlation coefficient | 月份 Month |
---|---|---|---|
P3 | 12-Apr. | 0.602* | 1 |
P4 | 14-Apr. | 0.710** | 1 |
P5 | 16-Apr. | 0.580* | 1 |
P7 | 29-Apr. | 0.477* | 1 |
P10 | 23-Jul. | 0.616* | 7 |
P11 | 2-Aug. | 0.596*/0.777 7** | 6/7 |
P27 | 4-Oct. | -0.479* | 8 |
Table 5 Correlation between phenological phases and mean air temperatures
物候期Phenophase | 日期 Date | 相关系数(r) Correlation coefficient | 月份 Month |
---|---|---|---|
P3 | 12-Apr. | 0.602* | 1 |
P4 | 14-Apr. | 0.710** | 1 |
P5 | 16-Apr. | 0.580* | 1 |
P7 | 29-Apr. | 0.477* | 1 |
P10 | 23-Jul. | 0.616* | 7 |
P11 | 2-Aug. | 0.596*/0.777 7** | 6/7 |
P27 | 4-Oct. | -0.479* | 8 |
物候期Phenophase | 日期 Date | 相关系数(r) Correlation coefficient | 月份 Month |
---|---|---|---|
P2 | 7-Apr. | 0.57*/0.567* | Pre-12、1 |
P11 | 2-Aug. | -0.484* | 7 |
P12 | 3-Aug. | -0.675** | 6 |
P13 | 6-Aug. | -0.571* | 6 |
P16 | 20-Aug. | -0.638* | 6 |
P17 | 23-Aug. | -0.619* | 7 |
P19 | 31-Aug. | -0.706* | 6 |
P20 | 6-Sept. | 0.744** | 9 |
P22 | 11-Sept. | 0.581* | 9 |
P23 | 19-Sept. | -0.591*/-0.469* | 6/7 |
P25 | 29-Sept. | 0.604* | 9 |
P26 | 3-Oct. | 0.588* | 8 |
P27 | 4-Oct. | 0.552* | 8 |
Table 6 Correlation between phenological phases and monthly mean precipitation (mm)
物候期Phenophase | 日期 Date | 相关系数(r) Correlation coefficient | 月份 Month |
---|---|---|---|
P2 | 7-Apr. | 0.57*/0.567* | Pre-12、1 |
P11 | 2-Aug. | -0.484* | 7 |
P12 | 3-Aug. | -0.675** | 6 |
P13 | 6-Aug. | -0.571* | 6 |
P16 | 20-Aug. | -0.638* | 6 |
P17 | 23-Aug. | -0.619* | 7 |
P19 | 31-Aug. | -0.706* | 6 |
P20 | 6-Sept. | 0.744** | 9 |
P22 | 11-Sept. | 0.581* | 9 |
P23 | 19-Sept. | -0.591*/-0.469* | 6/7 |
P25 | 29-Sept. | 0.604* | 9 |
P26 | 3-Oct. | 0.588* | 8 |
P27 | 4-Oct. | 0.552* | 8 |
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