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LIU Hong-yu1**, LI Zhao-fu2
Online:
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Abstract: Landscape process model is a spatially explicit model which is processbased and able to fully reveal the mechanisms of the spatiotemporal dynamics of regional landscape pattern. The model concerns a series of ecological processes, can reveal the variations of the structure and function of definite region’s landscape system, and thus, is an important means for the regional landscape planning, assessment, and management. Wetland landscape process model is one of the hotspots of great concern in recent years. Coastal wetland landscape is affected by the ocean tides, and has highly complicated dynamic variations. It is needed to study these dynamic variations from the aspects of basic theory, key points of model construction, and the processes of the model construction, including (1) to understand the ecological elements (hydrology, soil, plant community, climate, and geomorphology, etc.) and their interactions of coastal wetland landscape, which is the basis for constructing processdriven landscape model, and to explore the spatial heterogeneity of these ecological elements and its effects on the ecosystem evolution, which is the key for determining the main variables of processdriven landscape model, (2) to solve the key issues for constructing landscape process model, including model structure, its appropriate spatial scale, model construction methods, and model calibration and application. The landscape process model should display space and process changes, and thus, should include several ecosystem models based on each “cell” and the horizontal fluxes of material and information between “cells”. The spatial scale of the model means the “cell” size, while the ways of the model construction are “bottom-up” and “topdown”, and (3) to integrate the ecosystem model with GIS computer system, which is the key for landscape process model construction. The technical framework described in this paper is aiming at coastal wetland landscape process, which also could have significance for the construction of landscape process models for other wetland types.
LIU Hong-yu1**, LI Zhao-fu2. Basic theory and technical framework of coastal wetland landscape process model.[J]. cje.
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URL: http://www.cje.net.cn/EN/abstract/abstract21136.shtml
http://www.cje.net.cn/EN/Y2013/V32/I10/2815