天山山区植被类型改变对新疆气候影响的模拟分析

doi:10.11686/cyxb20140306

摘要/Abstract

摘要： 使用RegCM3区域气候模式,利用CRU资料和气象台站观测资料,验证了RegCM3区域气候模式对新疆降水和气温的模拟能力,分析了天山山区植被类型改变对新疆气候的影响。结果表明,RegCM3区域气候模式对新疆及其临近地区降水、温度的空间分布形势和季节变化特征具有较好的模拟能力。天山山区草地面积的改变,对新疆地区的降水和地面气温的影响很小。如果将天山山区43.5°~45.0° N区域内的地表类型由草地改变为耕地,即假设50%的草地被开垦为耕地,那么,天山山区降水量的变化强度在5-7月逐渐增强,然后减弱。天山植被的变化主要通过影响对流性降水并进而影响总降水的变化。天山植被类型变为农田后会造成较大的地面潜热通量差异并引起地表净热通量较大的差异,进而影响到地面气温的模拟。潜热通量的变化通过影响局地的水汽供应进而引起降水较大的变化。

Abstract: The relationship of vegetation with climate change has been identified in recent studies at regional and global scales. These efforts have provided the basis for vegetation reconstruction and eco-environment restoration through research on vegetation dynamics in specific regions and on its relationship with climate change to find the key factor affecting vegetation changes. In this study, the simulations of climate (mainly temperature and precipitation distribution and changes over Xinjiang) in the Xinjiang region were carried out by RegCM3 nested into CRU data. The RegCM3 model has the ability to simulate the basic character of the spatial distribution of precipitation and temperature over Xinjiang. At the same time, the model simulation can provide more reliable information of local precipitation and air temperature for regions with few observation stations. The impact of the change in rangeland vegetation type on climate in Tianshan Mountains was analyzed by the Regional Climate Model. Using this model, we analysed the impact of vegetation change on temperature and precipitation through three sensitivity experiments. The increase in grassland area may have little effect on temperature and precipitation in the Tianshan Mountains, but vegetation type that changed from grassland to cropland resulted in an increase of temperature and precipitation in the surface layer. Half of the grass area cultivated could bring growth from May to July in the Tianshan Mountains. This study showed that latent heat release was the main factor causing the ground temperature difference. The latent heat, by influencing the water vapor contents, affected the thermo-convective local precipitation.

中图分类号:

S812.1

赵玲,杨青,安沙舟. 天山山区植被类型改变对新疆气候影响的模拟分析[J]. 草业学报, 2014, 23(3): 51-61.

ZHAO Ling,YANG Qing,AN Sha-zhou. Numerical simulation analysis on the impact of change in rangeland vegetation type on climate in the Tianshan Mountains using a Regional Climate Model[J]. Acta Prataculturae Sinica, 2014, 23(3): 51-61.

参考文献

Reference：
[1]Lambin E F, Strahler A H. Indicators of land cover change for change vector analysis in multi temporal space at coarse spatial scales[J]. International Journal of Remote Sensing, 1994, 15: 2099-2119.
[2]Fang J Y, Piao S L, He J S, et al. China's vegetation activity is enhancing in the past 20 years[J]. Science in China (SERIES C), 2003, 33（6）: 554-565.
[3]Myneni R B, Keeling C D, Tucker C J, et al. Increased plant growth in the northern high latitudes from 1981 to 1991[J]. Nature, 1997, 386: 698-702.
[4]Nemani R, Keeling C, Hashimoto H, et al. Climate driven increases in global terrestrial net primary production from 1982 to 1999[J]. Science, 2003, 300: 1560-1563.
[5]Xin Z B, Xu J X, Zheng W. Effects of climate change and human activities on vegetation cover[J]. Science in China(Series d: Earth Sciences), 2007,37(11): 1504-1514
[6]Li X L, Hou X Y, Ubugunov L, et al. Effects of climate change on household compound ecosystems and herders' adaptation[J]. Acta Prataculturae Sinica, 2012, 22(1): 148-156.
[7]Shi Y F, Shen Y P, Hu R J. Preliminary study on signal, impact and foreground of climatic shift from warm-dry to warm-humid in northwest China[J]. Journal of Glaciology and Geocryology, 2002, 24 (3): 219-226.
[8]Li X H, Shi Q D, Chang S L, et al. Change of NDVI based on NOAA image in northwest arid area of China in 1981-2001[J]. Arid Land Geography, 2008, 31 (6): 940-945.
[9]Li X H, Shi Q D, Guo J, et al. The response of NDVI to climate variability in northwest arid area of China from 1981 to 2001[J]. Journal of Arid Land Resources And Environment, 2009, 23 (2): 12-16.
[10]Feng Q S, Xiu L N, Liang T G.Distribution of the existing natural vegetation in China based on CSCS[J]. Acta Prataculturae Sinica, 2012, 22(3): 16-24.
[11]Ren J Z, Liang T G, Lin H L, et al. Study on grassland's responses to global climate change and its carbon sequestration potentials[J]. Acta Prataculturae Sinica, 2011, 20(2): 1-22.
[12]Ma M G, Dong L X, Wang X M. Study on the dynamically monitoring and simulating the vegetation vover in northwest China in the past 21 years[J]. Journal of Glaciology and Geocryology, 2003, 25: 135-142.
[13]Grell G. Prognostic evaluation of assumptions used by cumulus parameterizations[J]. Monthly Weather Review, 1993, 21: 764-787.
[14]Anthes R. A cumulus parameterization schemeutilizing a one-dimensional cloud model[J]. Monthly Weather Review, 1977, 105: 270-286.
[15]Betts A K, Miller M J. The Betts Miller scheme, the representation of cumulus convection in numerical models[J]. Meteorological Monographs, 1993, 46: 107-121.
[16]Frotsch J M, Chappell F. Numerical prediction of convectively driven mesoscale pressure systems Part I: convective parameterization[J]. Journal of Atmosphere Science, 1980, 37: 1722-1733.
[17]Zeng X, Zhao M, Dickinson R E. Inter comparison of bulk aerodynamic algorithms for the computation for sea surface fluxes using toga coare and tao data[J]. Journal of Climate, 1998, 11: 2628-2644.
[18]Giorgi F, Franciso R, Pal J. Effects of a subgrid scale topography and land use scheme on the simulation of surface climate and hydrology. Part 1: effect of temperature and water vapor disaggregation[J]. Journal of Hydrometeorology, 2003, 4: 317-344.

[19]Pal J. Examples of simulations with the latest version of the RegCM[A]. Reported on the “ITCP Workshop on the Theory and Use of Regional Climate Model”[M]. Italy: ICTT, 2003.
[20]Purevjav G, Luvsan N. The impact of desertification on Mongolian climate and its numerical study using regional climate model(RegCM3)[A]. Proceedings of the 3 International Workshop on Terrestrial Change in Mongolia-Joint Workshop of AMPEX, IORGC and RAISE Projects[C]. TERC: University of Tsukuba, 2004: 112-113.
[21]Zhang W, Rui M H, Chen P Q. Comparison of summer climate conditions before and after large area wetland reclamation in the Sanjiang Plain[J]. Wetland Science, 2008, 6(2): 278-284.
参考文献：
[1]Lambin E F, Strahler A H. Indicators of land-cover change for change vector analysis in multi-temporal space at coarse spatial scales[J]. International Journal of Remote Sensing, 1994, 15: 2099-2119.
[2]方精云, 朴世龙, 贺金生, 等. 近20年来中国植被活动在增强[J]. 中国科学C辑, 2003, 33（6）: 554-565.
[3]Myneni R B, Keeling C D, Tucker C J,et al. Increased plant growth in the northern high latitudes from 1981 to 1991[J]. Nature, 1997, 386: 698-702.
[4]Nemani R, Keeling C, Hashimoto H,et al. Climate-driven increases in global terrestrial net primary production from 1982 to 1999[J]. Science, 2003, 300: 1560-1563.
[5]信忠保, 许炯心, 郑伟. 气候变化和人类活动对黄土高原植被覆盖变化的影响[J]. 中国科学D辑: 地球科学, 2007,37（11）; 1504-1514.
[6]李西良, 侯向阳, Ubugunov L, 等. 气候变化对家庭牧场复合系统的影响及其牧民适应[J]. 草业学报, 2012, 22(1): 148-156.
[7]施雅风, 沈永平, 胡汝骥. 西北气候由暖干向暖湿转型的信号、影响和前景初步探讨[J]. 冰川冻土, 2002, 24（3）: 219-226.
[8]李秀花, 师庆东, 常顺利, 等. 1981－2001年中国西北干旱区NDVI变化分析[J]. 干旱区地理, 2008, 31（6）: 940-945.
[9]李秀花, 师庆东, 郭娟, 等. 中国西北干旱区1981－2001年NDVI对气候变化的响应分析[J]. 干旱区资源与环境, 2009,23（2）; 12-16.
[10]冯琦胜, 修丽娜, 梁天刚. 基于CSCS的中国现存自然植被分布研究[J]. 草业学报, 2012, 22(3): 16-24.
[11]任继周, 梁天刚, 林慧龙, 等. 草地对全球气候变化的响应及其碳汇潜势研究[J]. 草业学报, 2011, 20(2): 1-22.
[12]马明国, 董立新, 王雪梅. 过去21a中国西北植被覆盖动态监测与模拟[J]. 冰川冻土, 2003, 25: 135-142.
[13]Grell G. Prognostic evaluation of assumptions used by cumulus parameterizations[J]. Monthly Weather Review, 1993, 21: 764-787.
[14]Anthes R. A cumulus parameterization schemeutilizing a one-dimensional cloud model[J]. Monthly Weather Review, 1977, 105: 270-286.
[15]Betts A K, Miller M J. The Betts-Miller scheme, the representation of cumulus convection in numerical models[J]. Meteorological Monographs, 1993, 46: 107-121.
[16]Frotsch J M, Chappell F. Numerical prediction of convectively driven mesoscale pressure systems Part I: convective parameterization[J]. Journal of Atmosphere Science, 1980, 37: 1722-1733.
[17]Zeng X, Zhao M, Dickinson R E. Inter comparison of bulk aerodynamic algorithms for the computation for sea surface fluxes using toga coare and tao data[J]. Journal of Climate, 1998, 11: 2628-2644.
[18]Giorgi F, Franciso R, Pal J. Effects of a subgrid-scale topography and land use scheme on the simulation of surface climate and hydrology. Part 1: effect of temperature and water vapor disaggregation[J]. Journal of Hydrometeorology, 2003, 4: 317-344.
[19]Pal J. Examples of simulations with the latest version of the RegCM[A]. Reported on the “ITCP Workshop on the Theory and Use of Regional Climate Model”[M]. Italy: ICTT, 2003.
[20]Purevjav G, Luvsan N. The impact of desertification on Mongolian climate and its numerical study using regional climate model(RegCM3)[A]. Proceedings of the 3 International Workshop on Terrestrial Change in Mongolia-Joint Workshop of AMPEX, IORGC and RAISE Projects[C]. TERC: University of Tsukuba, 2004: 112-113.
[21]张伟, 闰敏华, 陈泮勤. 三江平原湿地大面积开垦前后区域夏季气候状况的对比研究[J]. 湿地科学, 2008, 6(2): 278-284.