CAJ | 학술논문

利用1971—2006年环杭州湾地区25个气象站的降水、温度和云量资料及全球CO2年平均体积分数资料,采用LPJ全球动态植被模式（Lund-Potsdam-Jena Dynamic Global Vegetation Model）,通过模拟环杭州湾地区的植被年净初级生产力（Annual Net Primary Productivity,ANPP）,分析了该地区ANPP的变化特征,并探讨了植被ANPP变化的可能原因。结果表明：1）就环杭州湾地区,36a间植被ANPP均表现出不同程度的增加,尤其以嘉兴市北部、绍兴市东部较明显;全区平均增加速率为1.5243g·m-2·a-2;2）通过多元线性回归分析发现,环杭州湾地区平均云量与植被ANPP的关系最为密切,偏相关系数为-0.5175,而温度、降水与植被ANPP的关系不明显;同时,植被ANPP对气候变化的响应存在一定的地域性差异;3）在全区平均情况下,36a间由温度下降、降水增加、云量减小、CO2体积分数升高引起的植被ANPP变化趋势分别为-0.0813、-0.0171、0.7601、0.8673g·m-2·a-2,其对应的贡献率分别为-5.18%、-1.09%、48.38%、55.21%。由此可见,该地区植被ANPP变化的主要强迫因子是CO2体积分数和云量,而降水变化对植被ANNP的变化作用不大。
이용1971—2006년배항주만지구25개기상참적강수、온도화운량자료급전구CO2년평균체적분수자료,채용LPJ전구동태식피모식（Lund-Potsdam-Jena Dynamic Global Vegetation Model）,통과모의배항주만지구적식피년정초급생산력（Annual Net Primary Productivity,ANPP）,분석료해지구ANPP적변화특정,병탐토료식피ANPP변화적가능원인。결과표명：1）취배항주만지구,36a간식피ANPP균표현출불동정도적증가,우기이가흥시북부、소흥시동부교명현;전구평균증가속솔위1.5243g·m-2·a-2;2）통과다원선성회귀분석발현,배항주만지구평균운량여식피ANPP적관계최위밀절,편상관계수위-0.5175,이온도、강수여식피ANPP적관계불명현;동시,식피ANPP대기후변화적향응존재일정적지역성차이;3）재전구평균정황하,36a간유온도하강、강수증가、운량감소、CO2체적분수승고인기적식피ANPP변화추세분별위-0.0813、-0.0171、0.7601、0.8673g·m-2·a-2,기대응적공헌솔분별위-5.18%、-1.09%、48.38%、55.21%。유차가견,해지구식피ANPP변화적주요강박인자시CO2체적분수화운량,이강수변화대식피ANNP적변화작용불대。
Based on data of the precipitation,temperature and cloud cover of 25 stations in Hangzhou Bay region and the global annual volume fraction of CO2 from 1971 to 2006,the annual vegetation net primary productivity （ANPP） is simulated by the LPJ mode l （Lund-Potsdam-Jena dynamic global vegetation model）.The temporal and spatial characters of the ANPP in the region are analyzed and the driving factors of ANPP are further investigated.Results show that：1）The average increasing rate of ANPP is 1.524 3 g·m-2·a-2 in the whole region.However,ANPP spatially show different increasing rates from 1971 to 2006,with the significant rate in the north of Jiaxing and the east of Shaoxing.2） The multiple linear regression analysis shows that there is a close relationship between cloud cover and ANPP with-0.517 5 partial correlation coefficient.However,the correlation between ANPP and temperature （precipitation） is inconspicuous.Response of ANPP to climate change shows a certain geographical distribution for the different hydro-thermal conditions.3）In the whole region around Hangzhou Bay,the average trends caused by decline of temperature,increase of precipitation,reduction of cloud cover and enhancement of volume fraction of CO2 are-0.081 3,-0.017 1,0.760 1,and 0.867 3 g·m-2·a-2,and their attributions to the change of ANPP are-5.18%,-1.09%,48.38% and 55.21%,respectively.Therefore,the changes of volume fraction of CO2 and cloud cover play important roles to affect the change of ANPP,however,change of precipitation has little action to the ANNP.