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Development of a New Index for Integrating Landscape Patterns with Ecological Processes at Watershed Scale

CHEN Liding TIAN Huiying FU Bojie ZHAO Xinfeng

CHEN Liding, TIAN Huiying, FU Bojie, ZHAO Xinfeng. Development of a New Index for Integrating Landscape Patterns with Ecological Processes at Watershed Scale[J]. 中国地理科学, 2009, 19(1): 37-45. doi: 10.1007/s11769-009-0037-9
引用本文: CHEN Liding, TIAN Huiying, FU Bojie, ZHAO Xinfeng. Development of a New Index for Integrating Landscape Patterns with Ecological Processes at Watershed Scale[J]. 中国地理科学, 2009, 19(1): 37-45. doi: 10.1007/s11769-009-0037-9
CHEN Liding, TIAN Huiying, FU Bojie, ZHAO Xinfeng. Development of a New Index for Integrating Landscape Patterns with Ecological Processes at Watershed Scale[J]. Chinese Geographical Science, 2009, 19(1): 37-45. doi: 10.1007/s11769-009-0037-9
Citation: CHEN Liding, TIAN Huiying, FU Bojie, ZHAO Xinfeng. Development of a New Index for Integrating Landscape Patterns with Ecological Processes at Watershed Scale[J]. Chinese Geographical Science, 2009, 19(1): 37-45. doi: 10.1007/s11769-009-0037-9

Development of a New Index for Integrating Landscape Patterns with Ecological Processes at Watershed Scale

doi: 10.1007/s11769-009-0037-9
基金项目: Under the auspices of Chinese Academy of Sciences (No. KZCX2-YW-421);National Natural Science Foundation of China (No. 40621061, 30570319)
详细信息
    通讯作者:

    CHEN Liding.E-mail:Liding@rcees.ac.cn;Chenliding@sohu.com

Development of a New Index for Integrating Landscape Patterns with Ecological Processes at Watershed Scale

Funds: Under the auspices of Chinese Academy of Sciences (No. KZCX2-YW-421);National Natural Science Foundation of China (No. 40621061, 30570319)
  • 摘要: Understanding the relationship between landscape patterns and ecological processes has been a central yet challenging research theme in landscape ecology. Over the past decades,many landscape metrics have been proposed but few directly incorporated ecological processes. In this paper,we developed a landscape index,namely,location-weighted landscape index(LWLI) to highlight the role of landscape type in ecological processes,such as nutrient losses and soil erosion. Within the framework of the Lorenz curve theory,we develop this index by integrating landscape pattern and point-based measurements at a watershed scale. The index can be used to characterize the contribution of landscape pattern to ecological processes(e.g. nutrient losses) with respect to a specific monitoring point in a watershed. Through a case study on nutrient losses in an agricultural area in northeastern China,we found that nutrient losses tended to be higher for a watershed with a higher LWLI value,and vice versa. It implied that LWLI can be used to evaluate the potential risk of nutrient losses or soil erosion by comparing their values across watersheds. In addition,this index can be extended to characterize ecological processes,such as the effect of landscape pattern on wildlife inhabitation and urban heat island effect. Finally,we discuss several problems that should be paid attention to when applying this index to a heterogeneous landscape site.
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  • 收稿日期:  2008-08-28
  • 修回日期:  2008-12-05
  • 刊出日期:  2009-03-20

Development of a New Index for Integrating Landscape Patterns with Ecological Processes at Watershed Scale

doi: 10.1007/s11769-009-0037-9
    基金项目:  Under the auspices of Chinese Academy of Sciences (No. KZCX2-YW-421);National Natural Science Foundation of China (No. 40621061, 30570319)
    通讯作者: CHEN Liding.E-mail:Liding@rcees.ac.cn;Chenliding@sohu.com

摘要: Understanding the relationship between landscape patterns and ecological processes has been a central yet challenging research theme in landscape ecology. Over the past decades,many landscape metrics have been proposed but few directly incorporated ecological processes. In this paper,we developed a landscape index,namely,location-weighted landscape index(LWLI) to highlight the role of landscape type in ecological processes,such as nutrient losses and soil erosion. Within the framework of the Lorenz curve theory,we develop this index by integrating landscape pattern and point-based measurements at a watershed scale. The index can be used to characterize the contribution of landscape pattern to ecological processes(e.g. nutrient losses) with respect to a specific monitoring point in a watershed. Through a case study on nutrient losses in an agricultural area in northeastern China,we found that nutrient losses tended to be higher for a watershed with a higher LWLI value,and vice versa. It implied that LWLI can be used to evaluate the potential risk of nutrient losses or soil erosion by comparing their values across watersheds. In addition,this index can be extended to characterize ecological processes,such as the effect of landscape pattern on wildlife inhabitation and urban heat island effect. Finally,we discuss several problems that should be paid attention to when applying this index to a heterogeneous landscape site.

English Abstract

CHEN Liding, TIAN Huiying, FU Bojie, ZHAO Xinfeng. Development of a New Index for Integrating Landscape Patterns with Ecological Processes at Watershed Scale[J]. 中国地理科学, 2009, 19(1): 37-45. doi: 10.1007/s11769-009-0037-9
引用本文: CHEN Liding, TIAN Huiying, FU Bojie, ZHAO Xinfeng. Development of a New Index for Integrating Landscape Patterns with Ecological Processes at Watershed Scale[J]. 中国地理科学, 2009, 19(1): 37-45. doi: 10.1007/s11769-009-0037-9
CHEN Liding, TIAN Huiying, FU Bojie, ZHAO Xinfeng. Development of a New Index for Integrating Landscape Patterns with Ecological Processes at Watershed Scale[J]. Chinese Geographical Science, 2009, 19(1): 37-45. doi: 10.1007/s11769-009-0037-9
Citation: CHEN Liding, TIAN Huiying, FU Bojie, ZHAO Xinfeng. Development of a New Index for Integrating Landscape Patterns with Ecological Processes at Watershed Scale[J]. Chinese Geographical Science, 2009, 19(1): 37-45. doi: 10.1007/s11769-009-0037-9
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