Assessing vegetation dynamics and their relationships with climatic variability in Heilongjiang province, northeast China |
| |
| Authors: | Wenbin Liu Tijiu Cai Cunyong Ju Guobin Fu Yuefeng Yao and Xueqing Cui |
| |
| Institution: | (1) Department of Ecology, School of Forestry, Northeast Forestry University, 26 Hexing Road, 150040 Harbin, Heilongjiang province, China;(2) Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 100101 Beijing, China;(3) Graduate University of Chinese Academy of Sciences, 100049 Beijing, China;(4) Land and Water, The Commonwealth Scientific and Industrial Research Organization (CSIRO), Private Bag 5, Wembley, WA, 6913, Australia |
| |
| Abstract: | In this study, the vegetation dynamics in Heilongjiang province and their relationships with climate variability were assessed
using normalized difference vegetation index (NDVI) and meteorological datasets from 1981 to 2003. The conclusions from our
results are as follows: (1) After 1981, vegetation cover, as indicated by the NDVI, exhibited an insignificant increasing
tendency. However, the inter-annual variations of the NDVI showed apparent spatial differentiations. (2) The inter-annual
changes of the NDVI were different from season to season. The spring and autumn NDVI values increased, while the summer and
winter NDVI decreased. (3) The annual NDVI was significantly correlated with precipitation. Thus, as compared to temperature,
precipitation was the dominant climatic factor affecting the vegetation dynamics in Heilongjiang province. (4) The trend in
the NDVI showed a marked homogeneity corresponding to regional and seasonal variations in climate. Additionally, land use
changes also play an important role in influencing the NDVI trends over some regions. All of these findings will enrich our
knowledge of the natural forces that impact the stability of boreal ecosystems and provide a scientific basis for the environmental
management in Heilongjiang province in response to climate change and human activities. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
