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[1]XU Shen-lai,HOU Hao.The Landscape Dynamics of‘Source’and‘Sink’and Its Quantification Method[J].Research of Soil and Water Conservation,2008,15(06):64-67,71.

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The Landscape Dynamics of‘Source’and‘Sink’and Its Quantification Method

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 15 Number of periods: 2008 06 Page number: 64-67,71 Column: Public date: 2008-12-20

Title:: The Landscape Dynamics of‘Source’and‘Sink’and Its Quantification Method

Author(s):: XU Shen-lai^1,2, HOU Hao³; 1. State Key Laboratory of Urban and Region Ecology, Research Center For Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
2. Graduate University of Chinese Academy of Sciences, Beijing 100039, China;
3. Chinese Academy for Environmental Planning, Beijing 100012, China

Keywords:: source-sink landscape theory; ecological process; dynamic landscape pattern; cost-distance model

CLC:: X171

DOI:: -

Abstract:: Exploring the relationships between landscape pattern and ecological processes is the key topic of in-depth research in landscape ecology.This paper reconsiders the pattern-process relationship and analyzes the reason of separation of the landscape pattern and ecological processes.In this paper,we bring forward a method to quantify the characteristics of the dynamics of the‘sink’ landscape and‘source’ landscape with the development of the‘source-sink’ theory,cost-distance model analysis under a framework of soil erosion.This method can be used to evaluate the effect of landscape pattern upon ecological processes as related to distance,relative elevation,and slope degree,namely,location-weighted dynamic landscape contrast index (DLCI).This index links the dynamic landscape pattern to the ecological process so properly that it can be possible to quantify and predict the pattern-process relationship.This method has three following major characteristics,the first feature is the quantified definition of the dynamic‘source-sink’ landscape pattern based corresponding ecological process; the second merit is a wide application for heterogeneity of environment in term of rainfall and soil.The last advantage is the evaluation of influence of landscape pattern on soil erosion with weighted dynamic landscape contrast index.Thus,the weighted dynamic landscape contrast index provides some important key reference for deepening the pattern-process relationship in landscape ecology.

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