Temporal and spatial dynamics of ecological land and its connectivity based on morphological spatial pattern analysis （MSPA） in Inner Mongolia Autonomous region

doi:10.14088/j.cnki.issn0439-8114.2021.12.011

Abstract

Abstract: Based on the land use data of 8 periods from 1980 to 2018, the ecological land was defined and extracted in combination with the actual situation and relevant literature in Inner Mongolia Autonomous region. The types of ecological land connectivity were classified by morphological spatial pattern analysis （MSPA）, and the spatial and temporal dynamic characteristics of ecological land and its connectivity were obtained by using transfer matrix. The results showed that, the proportion of ecological land in Inner Mongolia Autonomous region decreased by 3.459 percentage points from 1980 to 2018, mainly because of the great reduction of grassland. The proportion of non-ecological land increased, but it was still lower than that of ecological land. Many MSPA types transferred to non-ecological land, at the same time, the connectivity of the retained ecological land decreased, the degree of aggregation of the core area decreased, and the perforation appeared. The spatial connectivity of the northern region was better than that of the southern region, and the main ecological land components were different from east to west. In terms of structure, low-cover grassland was of great significance to improve the connectivity of regional ecological land. The acceleration of urbanization, extensive development and management of resources and special natural conditions were the main reasons for the reduction of ecological land area and the decline of connectivity. Inner Mongolia Autonomous region still needed to strengthen ecological protection according to local conditions. MSPA method can effectively identify the overall level and spatial distribution characteristics of ecological land connectivity.

Key words: ecological land, landscape connectivity, morphological spatial pattern analysis （MSPA）, Inner Mongolia Autonomous region

CLC Number:

P901

LIN Fei-fei, XIE Miao-miao, ZHANG Hao, HAI Feng. Temporal and spatial dynamics of ecological land and its connectivity based on morphological spatial pattern analysis （MSPA） in Inner Mongolia Autonomous region[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(12): 55-62.

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