CHENG Dongya,LI Xudong.Analysis of Spatial Distribution of Temperature and Precipitation and Its Terrain Impact of the Wujiang River Basin in Guizhou Province[J].Research of Soil and Water Conservation,2020,27(02):246-252.
贵州乌江流域气温与降水空间分布特征及其地形影响分析
- Title:
- Analysis of Spatial Distribution of Temperature and Precipitation and Its Terrain Impact of the Wujiang River Basin in Guizhou Province
- 文章编号:
- 1005-3409(2020)02-0246-07
- Keywords:
- temperature; precipitation; terrain; geographically weighted regression; Wujiang River Basin in Guizhou Province
- 分类号:
- P423; P426.6
- 文献标志码:
- A
- 摘要:
- 探究山地流域气温与降水空间分布特征及其地形影响因素,为区域农业发展和资源利用提供参考。选取中国(贵州)地面累年值年值数据集(1981—2010年)气温和降水数据,利用克里金法(Kriging)、反距离权重法(Inverse Distance Weight)、样条函数法(Spline)、地理加权回归(GWR)等方法,探究了贵州乌江流域气温和降水空间分布特征,并分析了地形对气温和降水的影响。结果表明:(1)贵州乌江流域气温从上游(赫章—水城)至下游(沿河—道真)总体逐渐升高,气温与海拔变化大致呈相反关系。(2)贵州乌江流域降水总体从东南(南)向西北逐渐减少,织金—普定—安顺等迎风坡降水较多。(3)贵州乌江流域水热组合不均衡,水热组合良好区域偏少,生产生活需要“因温因水”制宜。(4)贵州乌江流域海拔对气温具有负影响,海拔变化1 000 m,气温空间变化为3.3～6.0℃,其影响程度为下游、上游南部高,中游低。(5)贵州乌江流域海拔对降水影响空间差异大,GWR模拟空间影响正负均有,流域上游负影响,中游正影响。
- Abstract:
- It can provide reference for regional agricultural production and rational utilization of resources to explore the spatial distribution characteristics of temperature and precipitation and their influencing factors. The temperature and precipitation data of the China(Guizhou)ground yearly value data(1981—2010)was selected, the kriging, the inverse distance weight, and the spline, geographically weighted regression and other methods were used to explore the spatial distribution of temperature and precipitation of the Wujiang River Basin in Guizhou Province, and the impact of terrain on temperature and precipitation was analyzed. The results show that:(1)The temperature of the Wujiang River Basin in Guizhou Province is gradually increasing from the upstream(Hezhang-Shuicheng)to the downstream(Yanhe-Daozhen), and the temperature is roughly opposite to the change in altitude.(2)The precipitation is generally decreasing from the southeast(south)to the northwest, and there are more precipitations on the windward aspects such as Zhijin-Puding-Anshun.(3)The temperature and precipitation combination of the Wujiang River Basin in Guizhou Province is not balanced, and the area with good temperature and precipitation combination is less. The production and life should adapt to the temperature and precipitation.(4)The elevation of the Wujiang River Basin in Guizhou Province has the significantly negative impact on temperature, and when the altitude changes by 1 000 m, the temperature changes by 3.3～6.0℃. The impact degree is lower in the downstream, and it is higher in the upstream and lower in the middle.(5)The spatial difference of precipitation of the Wujiang River Basin in Guizhou Province is large, and the space effects simulated by the geographically weighted regression are positive or negative. The space effects are negative in upstream of the basin, these are positive in the middle reaches of the basin.
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备注/Memo
收稿日期:2019-04-17 修回日期:2019-05-20 资助项目:国家自然科学基金“西南山地流域城市化与生态环境的耦合关系研究——以贵州乌江流域为例”(41261039) 第一作者:程东亚(1994—),男,安徽亳州人,硕士研究生,研究方向为资源利用与低碳发展。E-mail:wwwcdongya@yeah.net 通信作者:李旭东(1969—),男,湖南邵东人,教授,主要从事人口地理与区域发展、应对气候变化与低碳经济研究。E-mail:616507732@qq.com