Abstract
The landscape pattern of Da’an County, Northeast China has undergone significant changes since the 1950s as a result of climatic change and human activities. The aim of this paper is to quantitatively study landscape pattern and its spatial dynamics of Da’an County at the landscape level over the nearly 50-year span. Patch dynamics were examined according to land use and land cover change processes built from a series of images, as well as topographic maps, and temporal patterns built from landscape pattern metrics. The transition matrix of landscape patch types and changes of various landscape metrics were applied. The results showed that, from 1956 to 2000, the landscape within the study area had undertaken a complicated evolution in landscape structure and composition. The outstanding characteristic is that saline-alkali land increased and grassland decreased. As some smaller patches amalgamated, the heterogeneity of patch decreased. All those changes were the synthetic result of both climatic and anthropogenic influences, but the predominant factor was different in different parts. In the southern part of the study area, the landscape pattern changes resulted from the modification of climate obviously, while in the northern part, the landscape pattern changes were mainly caused by human activities, such as the conversion between farmland and saline-alkali land. This phenomenon showed that human activities played more important role in the north than in the south of Da’an County.
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Foundation item: Under the auspices of National Natural Science Foundation of China (No. 40401003), Knowledge Innovation Program of Chinese Academy of Sciences (No. KZCX3-SW-356), Key Project of Chinese Academy of Sciences for Developing Science and Technology of Northeast China (DBZX-2-030)
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Wang, Z., Zhang, Y., Zhang, B. et al. Landscape dynamics and driving factors in Da’an County of Jilin Province in Northeast China during 1956–2000. Chin. Geogr. Sci. 18, 137–145 (2008). https://doi.org/10.1007/s11769-008-0137-y
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DOI: https://doi.org/10.1007/s11769-008-0137-y