Based on land use and land cover research, land system, which is composed of land use, land cover and ecosystem, now is focusing on the study of human vulnerability and sustainability under global environmental change with an integrated perspective, and becoming the core of present land change science. Land system is interested in the functional changes caused by structural changes, and emphasizes comprehensive assessments and simulations of the coupled human-environmental system. Detailed investigations of land system can combine region and city as a whole and contribute to urban ecological safety and regional sustainability. This paper takes Harbin-Daqing-Qiqihaer region in Heilongjiang Province of Northeast China as study area,on the basis of defining land use functions conception and classification, this paper selects several indices from land use, environment and socio-economic development, and utilizes Analytical Hierarchy Process (AHP) method to identify land use functions distribution of the year 1976 and 2005 on geographical grid scale. There are four main functions (resources function, ecological function, economic function and social function) and eight sub-functions, such as resources provision, ecological defense, landscape maintenance, environmental purification, economic increase, population bearing, human habitat, culture and recreation. This paper investigates its changing hotspots and coupling relations, the results show that correlativity between resources provision function and other functions are negative, which means obvious land use functions conflicts. The framework proposed by this paper can provide spatial, quantitative and dynamic study of land use functions, and can provide references for land configuration.
LI De-yi, ZHANG Shu-wen, Lü Xue-jun, DONG Li-feng
. Changing Detection Method of Land Use Functions Based on Geographical Grid[J]. JOURNAL OF NATURAL RESOURCES, 2011
, 26(8)
: 1297
-1305
.
DOI: 10.11849/zrzyxb.2011.08.008
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