万州区植被净初级生产力对气候因子的响应  

Response of the Vegetation Net Primary Productivity of Wanzhou District to Climate Factors

作　　者：程燕[1] 陈翼姝 汪露[1] 牟新利[2] CHENG Yan CHEN Yi-shu WANG Lu MOU Xin-li(College of Finance and Economics College of Environmental ＆ Chemical Engineering, Chongqing Three Gorges University, Chongqing 404000, China)

机构地区：[1]重庆三峡学院财经学院,重庆404000 [2]重庆三峡学院化学与环境工程学院,重庆404000

出　　处：《重庆与世界》2016年第34期28-31,共4页The World & Chongqing

基　　金：重庆市科委前沿与应用基础研究(一般)项目(cstc2014jcyj A20002);重庆三峡学院项目(14ZD15;2014-sxxyjd-05);万州区科委科技项目(201504009);国家级大学生创新性创业训练计划项目(201610643005)

摘　　要：采用万州区1955—2013年的气候资料,采用气候生产力模型对该地区的植被净初级生产力进行计算,研究气候因子变化对植被净初级生产力的影响。结果表明:万州区的年均植被净初级生产力数值为11.446 t·hm-2·a-1,但是年际间变化无显著上升或下降的变化趋势。植被净初级生产力与年降雨量、年平均生物温度、年平均相对湿度之间是显著正相关,与年平均最高温度之间为显著负相关。在全球气候变暖的背景下,1985年前后万州区的年平均相对湿度和年平均最高温度发生了突变,未来将会进一步降低万州区的植被净初级生产力,从而对生态环境产生压力。Climate productivity model was used to calculate the vegetation net primary productivity of Wanzhou District by the climate data from 1955 to 2013, and research on climate change impacts on vegetation, and the climate factors impact on the vegetation net primary productivity was studied. The results were showed that the annual average of the vegetation net primary productivity of Wanzhou District is 11. 446 t·hm^-2·a^-1. However, there is no significant increase or decrease in the trend between interannual variability of the vegetation net primary productivity. The vegetation net primary productivity and annual rainfall, the annual average biological temperature, annual average relative humidity is significant positive correlation. The vegetation net primary productivity and the average maximum temperature is significant negative correlation. Under the background of global warming, the annual average relative humidity and average maximum temperature have mutation in 1985. In the future, it will be further reduced the vegetation net primary productivity of Wanzhou District, which would produce more pressure on the ecological environment. This study provides a reference for the construction of Wanzhou District and Chongqing northeast ecological conservation development areas.

关 键 词：万州 植被净初级生产力 气候因子 年际变化 

分 类 号：Q948[生物学—植物学]