Analysis of the landscape diversity dynamics of small watershed in the Loess Plateau

Abstract

Abstract: Taking Zhifanggou Gully as the study area, some landscape diversity indexes were attained under the support of GIS technology. Utilizing the indexes such as patch size, average fractal dimension, diversity index, dominance, evenness, fragmentation and conglomeration, the changes of landscape diversity in the small watershed in Loess Plateau during the past 40 years were studied. The landscape diversities had been increasing for the recent 40 years due to the effect of both human activity and plants' endogenesis succession. The patches number increased, and the dryland matrix was substituted gradually by other matrixes such as meadow and woodland. The landscape pattern trended to be fragmentized and the indexes of landscape type diversity and evenness increased, while landscape diversities changed greater during 1978～1998 than during 1958～1978. Homogeneous dryland matrix landscape ecosystem in 1958 had already changed into heterogeneous meadow and woodland matrix landscape ecosystem, which had greater structure stability and stronger function than before.

Key words: Loess Plateau, Land use, Landscape diversity, Dynamics

CLC Number:

Q143

WANG Xiaoyan, XU Zhigao, YANG Mingyi, TIAN Junliang . Analysis of the landscape diversity dynamics of small watershed in the Loess Plateau[J]. Chinese Journal of Applied Ecology, 2004, (2): 273-277.

References

[1] Ansai Experiment Area of Soil and Water Conservation, Northwestern Institute of Soil and Water Conservation and the People's Government of Ansai County(西北水土保持研究所、安塞县人民政府安塞水土保持试验站).1990.Studies on Ecologtcal Agriculture with Soil and Water Conservation in Loess Hilly Gully Region.Yangling: Tianze Press. (in Chinese)
[2] Chen L-D(陈利顶),et al.1996.The ecological significance and application oflandscape connectivity.Chin J Ecol(生态学杂志),15(4):37～42(in Chinese)
[3] Chen L-Z(陈灵芝)1993.Biological Diversity in China-Status and Its Safeguard. Beijing: Science Press. (in Chinese)
[4] Fu B-J(傅伯杰).1995.Landscape diversity analysts and mapping.Acta Ecol Sin(生态学报),15(4):345～350(in Chinese)
[5] Fu B-J(傅伯杰).1995.The spatial pattern analysis of agrtcultural landscape in the loess area.ActaEcol Sin(生态学报),15(2):113～120(in Chinese)
[6] Fu B-J(傅伯杰).1996.Landscape diversitytypes andtheir ecological significarce.Acta Geogr Sin(地理学报),51(5):454～462(in Chinese)
[7] Guo J-P(郭晋平),et al.2000.Study on the dynamics of patch size and grain structure of landscape elements in the forest restoration process.Acta Ecol Sin(生态学报),20(2):218～223(in Chinese)
[8] He N-P(何念鹏),et al.2001.Impact of human distrubance on fragmentation of village-level landscape.Chin J Appl Ecol(应用生态学报),12(6):897～899(in Chinese)
[9] Ma K-M(马克明),et al.1998.Measuring landscape diversity:Affinity analysis of pattern diversity.ActaEcol Sin(生态学报),18(1):76～81(in Chinese)
[10] Ma K-M(马克明),et al.1999 Studies on spices and pattern diversity of the forest landscape of Donglingshan Mountain region, Beijing,China.ActaEcol Sin(生态学报),19(1):1～7(in Chinese)
[11] Ma K-P(马克平).1993 Discuss on the conception of biology diversity.Biol Div(生物多样性),1(1):20～22(in Chinese)
[12] Qian L-Q(钱迎清),et al.1994.Principle andMethod for Biology Diversity Study. Beijing: China Science and Technology Press. (in Chinese)
[13] Song D-M(宋冬梅),et al.2003 Landscape changes of Minqin oasis in Gansu Province and its driving force.Chin J Appl Ecol(应用生态学报),14(4):535～539(in Chinese)
[14] Wu J-G(邬建国).2000.Landscape Ecology-Pattern,Process,Measure and Order. Beijing: Higher Education Press. (in Chinese)
[15] Xu H-C (徐化成). 1996. Landscape Ecology. Beijing: China Forestry Press. (in Chinese)