JOURNAL OF NATURAL RESOURCES ›› 2017, Vol. 32 ›› Issue (10): 1731-1743.doi: 10.11849/zrzyxb.20160972

• Resource Ecology • Previous Articles     Next Articles

Key Landscape Pattern Factors Affecting Land Ecological Quality in Developed Areas: A Case Study of Kunshan City in Jiangsu Province

XIAO Yao1, 2, ZHU Feng-wu2, 3, ZHOU Sheng-lu1, 2, SHEN Chun-zhu2, 3, WANG Jing2, 3   

  1. 1. School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210046, China;
    2. Nanjing South Source of Land Development and Utilization Consulting Ltd., Nanjing 210008, China;
    3. Key Laboratory of Coastal Zone Exploitation and Protection, Ministry of Land and Resources, Nanjing 210024, China
  • Received:2016-09-12 Revised:2016-12-22 Online:2017-10-20 Published:2017-10-20
  • Supported by:
    Special Fund for Research in the Public Interest of Ministry of Land and Resources, No.201511001-03

Abstract: Land ecological planning based on landscape ecology is an important way to improve land ecological quality and regional ecological environment. Key landscape pattern factors are the important bases of landscape planning and design. The paper selected a developed city in Yangtze River delta region—Kunshan city as the study area. Based on the comprehensive index for land ecological quality evaluation, the paper chose 14 landscape pattern indices and calculated the correlation coefficient between the comprehensive index of land ecological quality and the landscape pattern indices with correlation analysis to identify the key landscape factors which affect land ecological quality mostly. The results showed that: 1) At town scale, land ecological quality has significant negative correlation with the largest plaque index (LPI) and the area weighted average patch area (AWMPS), and it has significant positive correlation with Shannon diversity (SHDI) and average shape index (MSI). 2) Key landscape pattern factors affecting land ecological quality are different in areas with different land use structures. In construction land zone, land ecological quality has significant positive correlation with the patch density index (PD) and boundary density (ED) and has significant negative correlation with the aggregation index (AI) and contagion index (CONTAG). In ecological land zone, land ecological quality has significant positive correlation with land patch area (TA) and the area weighted average patch area (AWMPS). In farmland zone, land ecological quality has significant negative correlation with the largest plaque index (LPI) and negative correlation with separation index (SPLIT) and diversity index (SHDI). 3) When we make land ecological planning and landscape design in the research area, the dominant types of landscape, the richness and balanced distribution of landscape types and the landscape complexity should be considered firstly. Secondly, we should focus on key landscape pattern factors in areas of different land use structures. The fragmentation and discreteness of landscape should be maintained in construction land zone. In ecological land zone, the maximum area and the advantage types should be maintained. In farmland zone, the diversity and spatial equilibrium of the landscape types should be ensured.

Key words: key factors of landscape pattern, Kunshan city, land ecological quality

CLC Number: 

  • F301.24