Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS

Study on Landscape Effects from Cultivated Land Consolidation

  • 1. Department of Land Resources Management, China Agricultural University, Beijing 100094, China;
    2. Grandtopeak Land Consolidation & Rehabilitation Ltd., Beijing 100873, China;
    3. The Center of Land Consolidation & Rehabilitation, Ministry of National Land and Resources, Beijing 100035, China

Received date: 2004-10-10

  Revised date: 2004-12-09

  Online published: 2005-08-25


This article analyzes the landscape effect resulting from cultivated land consolidation in Yanqing county by contrasting landscape characteristics of different types of cultivated land between those obtained from the survey in the representative areas and those under detailed designing and planning for landscapes at different consolidation levels.The indices are introdu-ced to measure the changes of patch characteristics before and after consolidation,such as mean area of a patch,mean perimeter of a patch,patch density,perimeter density and the ratio of mean perimeter of a patch to its area.The differences of corridor characteristics before and after consolidation are illustrated by the indices of types of corridor landscapes,the proportion of area of all the corridors to the area of cultivated land,density of different corridors,networks connectivity,networks ring,etc.The results indicate that the mean area and mean perimeter of a patch obviously increase and the patch density,perimeter density and the ratio of the mean patch perimeter area decrease after consolidation.This implicates that cultivated land consolidation increases landscape granularity and decreases the degree of fragmentation and boundary division of landscapes.The proportion of the area of all the corridors to the area of cultivated land falls after consolidation,which reduces the coefficient of non-effective cultivated land.The proportions of the length of every corridor to that of all the corridors are rationalized.Farmland shelterbelt enriches corridor types in cultivated land which can be taken as additional corridor types.The connectivity of corridors networks and ring roads or ring ditches is enhanced,which benefits the flow of energy and material.

Cite this article

YANG Xiao-yan, YAN Dong-hao, CHENG Feng . Study on Landscape Effects from Cultivated Land Consolidation[J]. JOURNAL OF NATURAL RESOURCES, 2005 , 20(4) : 572 -581 . DOI: 10.11849/zrzyxb.2005.04.013