|Analysis of Climate Change Effect on Camellia Oil Content in Fujian Province of China
|中文关键词: 气候变化 福建省 油茶 含油率 影响 分析
|英文关键词: climate change Fujian Province camellia oleifera oil content effect analysis
| 福建省是中国油茶的主要产地之一,油茶也是中国富有特色的重要木本植物油品种,其生产的高品质茶油对人类健康具有十分重要作用和意义。本文采用2013 年国家气象信息中心新整编的1961-2010 年中国地面0.5°×0.5°气温、降水格点数据,提取福建省各年代相应气候要素数值进行统计和变异分析,应用普通油茶含油率综合评估气候模式,运用ArcGIS 地理信息技术和概率统计学方法对1961-2010 年福建普通油茶含油率的时空分布进行区划,分析油茶关键生育期中油脂转化积累期(9 月份)月平均气温和降水量与含油率变化关系,评价1961-2010 年气候变化影响下福建省油茶含油率年代和区域分布特征。分析结果表明,9月份平均降水量与福建油茶含油率显著正相关,对油茶含油率变化起主要作用;含油率有着明显的高低年代交替变化特点,存在高油率年代(1960s、1980s、2000s)和低油率年代(1970s、1990s)之分,具有20 年的高低变化周期。气温变异系数(CvT)差别小,对含油率影响不明显,降水量变异系数(CvR)和含油率变异系数(Cvf)差别大,两者在福建沿海地区分布有较好的对应和反映,沿海降水量比内陆地区波动大,降水不稳定也是影响油茶含油率高低的主要因素。福建省年气温降水符合油茶油脂转化积累期适宜的气候条件,为生产高油率品质创造了良好基础,油茶含油率随年代气候变化略有下降,但全省总体水平较高(42.5%~54.4%),具有开发油茶种植的气候资源区位优势。
| Fujian Province is one of the main camellia oleifera production areas in China. Camellia oleifera is also an important characteristic varieties of woody oil, which can produce the high quality seed oil. By using of 0.5°(E)×0.5°(N)lattice data of China ground temperature and precipitation from 1961 to 2010 which came from National Meteorological Information Center in 2013, this paper extracted the corre-sponding decadal climate data of Fujian Province to carry on statistical and variation analysis, applied climate models of the integrated assess-ment for camellia oil content by using of ArcGIS geographic information technology and probability statistics method to regionalize the oil content of camellia oleifera temporal and spatial distribution from 1961s to 2010s in Fujian Province, analyzed the variation relationship be-tween the oil content and climate essential factor of the monthly decadal mean temperature and precipitation in September at the stage of the key growth period of camellia oil fat accumulation and transformation, evaluated the regional characteristics of camellia oil content variation affected by climate factors in Fujian Province from 1961s to 2010s. The results showed that the decadal mean precipitation in September had a positive significant correlation with oil content change and played a major role of camellia oleifera production in Fujian Province; the signif-icant characteristics of that oil content level in high or low followed the decadal alternate change. There were obviously different oil content level between high oil decadal(1960s, 1980s, 2000s)and low oil decadal(1970s, 1990s), and its significant variation period was 20 years. The decadal difference was not significant in temperature coefficient of variation (CvT), which affected the oil content was not obvious either. But there had significant change between precipitation coefficient of variation(CvR)and oil content coefficient of variation(Cvf), and their distributions had a good corresponding and been reflected in the Fujian coastal area, where the fluctuations of precipitation coefficient of variation were more obvious than inland areas. The unstable precipitation was the main affecting factor of camellia oil content also. The decadal temperature and precipitation in Fujian met the suitable climate conditions at stage of fat transformation and accumulation of camel-lia, and created good basis for the high quality oil. Camellia oil content had been slightly down along with the decadal climate change, but Fujian Province with the high level of oil content(42.5%~54.4%)where have location advantage to make full use of climate resources for camellia production.