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| 1 | Phenological basis of determining tourism seasons for ornamental plants in central and eastern China显示文摘许多植物在特定的 phenophases 期间有高装饰的价值,并且与季节的植被风景高度种物候学相互关联。跨度的决心和为装饰植物的旅游季节的空间与时间的模式能自己向旅游主管和旅游者提供做旅行安排的一个理论基础。基于从三 phenophases 的 on-the-ground 观察导出的数据,首先明确地长叶叶着色日期的日期,完整的 flowering 日期,和结束,和在在中国的 12 个地点的相应气象学的数据,我们把旅游季节划分了成它的开始的日期,山峰(最好的日期)和为由计算这些 phenophases 的频率分布的装饰植物的结束日期。我们也决定了这个旅游季节的山峰怎么在过去的 50 年的功课期间变化了。我们发现了那:( 1 )旅游季节的山峰从3月16日 (在桂林)到5月5日(在哈尔滨)因为首先长叶,从4月3日(在 Kunming )到5月24日(在 Mudanjiang )为完整的 flowering ,并且从10月1日(在 Mudanjiang )到11月30日(在上海)为叶着色。当力量被期望,首先长叶和完整的 flowering 旅游季节的山峰断然与纬度被联系,当为叶着色它否定地与纬度被相关时。(2 ) 为首先长叶和完整的 flowering 的理想的旅游季节在北京和 Xian 在过去的 50 年到超过 0.16 天 / 年进展了,当为叶着色的旅游季节的山峰变得显著地推迟了时(到在北京的 0.16 天 / 年和在 Xian 的 0.21 天 / 年) 。(3 ) 旅游季节显著地越过相关 phenological 观察地点与温度被联系。首先长叶和完整的 flowering 的理想的时间决心分别地,与 pH 价值 increasi 每 1eposition 率增加到 4.02 天和 4.04 天前进了吗?? | TAO Zexing GE Quansheng WANG Huanjiong DAI Junhu | 2015 | Journal of Geographical Sciences2015,25,11: | 8 |
| 2 | Climate change, migration, and regional administrative reform: A case study of Xinjiang in the middle Qing Dynasty(1760–1884)显示文摘Based on historical records of extreme climate events and population densities in Gansu and Shaanxi, and information on climate change, populations, new cultivated cropland, and administrative system reform in Xinjiang, this study explores the interaction between climate change, migration, and regional administrative reform in the middle Qing Dynasty. The results showed that the surge in population migration from Gansu and Shaanxi to Xinjiang during 1760–1820 was caused by extreme climate events(droughts and floods) and population pressure in Gansu and Shaanxi. During 1760–1880, the climate in Xinjiang was unusually cold and humid, which was highly conducive to abundant regional water resources. This provided favorable conditions for farmland irrigation and further promoted agricultural cultivation, population growth, and town development within this region. Additionally,the interactions between climate change and the above-mentioned social factors, which acted as driving forces, spurred the reform in the administrative system of Xinjiang whereby the military administration system was transformed to a province administration system. Through this reform, the Qing government managed to restore peace and stability in Xinjiang. This study contributes to a better understanding of climate-related population migration and enhances our knowledge of the impact-response chain between climate change, ancient social developments, and political coping strategies, especially in regional administrative reform. | LI YanPeng GE QuanSheng WANG HuanJiong TAO ZeXing | 2017 | Science China Earth Sciences2017,60,7: | 3 |
| 3 | Relationships between climate change, agricultural development and social stability in the Hexi Corridor over the last 2000 years显示文摘This case study of the Hexi Corridor, Northwestern China, utilizes statistical methods to estimate quantitatively the interaction at a regional level between climate change, ancient social developments, and political coping strategies over the past 2000 years. The data is sourced from high-resolution reconstructions of climate series(temperature and precipitation), and historical records of cultivated land, war, population, and changes in regional administrative systems. The results show that moisture conditions played a more significant role than temperature in driving land reclamation in the Hexi Corridor. Analysis also showed a negative correlation between war frequency and the area of cultivated land in the Corridor over 20-year time intervals. Population growth was found to have a significant positive correlation with the cultivated land area during the study period. The results indicate that a climate-induced decline in agricultural production and the subsequent fluctuations in population could act as a trigger for social unrest, which is especially true at the mutual decadal time-scales. However, the interaction with administrative reform also suggests that, in the face of social and economic turmoil, a reasonable administrative hierarchy could strengthen the social governance of regional government, and promote social stability and economic development at a regional level. The study substantiates this notion with empirical quantitative evidence. | Yanpeng LI Quansheng GE Huanjiong WANG Haolong LIU Zexing TAO | 2019 | Science China Earth Sciences2019,62,9: | 1 |