南京林业大学学报(自然科学版) ›› 2013, Vol. 37 ›› Issue (06): 89-95.doi: 10.3969/j.issn.1000-2006.2013.06.018

• 研究论文 • 上一篇    下一篇

长江中下游地区植被覆盖与区域气候变化的关系研究

杨艳蓉,张增信,张金池,刘春明,庄家尧   

  1. 南京林业大学森林资源与环境学院,江苏省林业生态工程重点实验室,江苏 南京 210037
  • 出版日期:2013-12-18 发布日期:2013-12-18
  • 基金资助:
    收稿日期:2013-02-20 修回日期:2013-07-30
    基金项目:国家林业公益性行业科研专项项目(201104068); 国家自然科学基金项目(31270587); 南京林业大学高学历人才基金项目(B2011-3); 江苏高校优势学科建设工程资助项目(PAPD)
    第一作者:杨艳蓉,讲师,博士。E-mail: yangion@163.com。
    引文格式:杨艳蓉,张增信,张金池,等. 长江中下游地区植被覆盖与区域气候变化的关系研究[J]. 南京林业大学学报:自然科学版,2013,37(6):89-95.

A study on the relationship between vegetation coverage and regional climate change in middle and lower reaches of Yangtze River

YANG Yanrong, ZHANG Zengxin, ZHANG Jinchi, LIU Chunming, ZHUANG Jiayao   

  1. Jiangsu Key Laboratory of Forestry and Ecological Engineering, College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China
  • Online:2013-12-18 Published:2013-12-18

摘要: 以长江中下游为研究区,利用1998—2008年归一化植被指数(NDVI)和1951—2011年基准气象观测资料,借助区域气候模型RegCM3和MODIS遥感,分析测站“点”上植被“覆盖量”、区域“面”上植被“覆盖类型”与气候变化的关系。结果表明:(1)气温、NDVI值有逐年上升的趋势,降水量变化不大。年纪尺度NDVI与气温呈较强正相关,与降水呈弱负相关。(2)在选定的3个植被下垫面中,以农田植被覆盖为主的长三角丘岗城乡交错区年增温最弱。春夏秋季增温趋势从大到小为:赣浙皖山地森林区>鄂皖低山丘陵混合林区>长三角丘岗城乡交错区,冬季则完全相反。春夏秋季节农田植被区的降水量随时间增加显著,森林区的降水量则显著减少,冬季的降水量都有所增加。

Abstract: With the middle and lower reaches of Yangtze River as survey region, under the support of observations from normalized differential vegetation index(NDVI)during years from 1998 to 2008 and benchmark weather stations from 1951 to 2011,using regional climate model RegCM3 and remote sensing data from MODIS, the relationship between vegetation condition and climate change had been analyzed, in perspectives of “point”, “vegetation coverage” and “area”, “vegetation cover type” respectively. The results showed that:(1)NDVI value and air temperature had the trend of ascending, precipitation mainly remained unchanged. From the point of annual time scale the relationship between NDVI and temperature appeared stronger positive correlation, and showed a weak negative correlation with precipitation.(2)In the selected three underlying surfaces, the trend of increasing temperature in staggered area of hills and urban and rural in Yangtze River delta region was the weakest, whose majority vegetation cover was farmland. In spring, summer and fall season, the trend looks like, forest area of Zhejiang, Jiangxi, Anhui mountain > mixed forest area in low hills of Anhui > staggered area of hills and urban and rural in Yangtze River delta region. Conditions in winter were the opposite. For the precipitation analysis, in the season of spring, summer and fall, the value in farm land areas increased significantly, and forest precipitation decreased significantly; in winter, all values in three areas increased.

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