Landscape pattern changes in small watershed on the basis of policies of land withdrawing from cultivation

Abstract

Abstract: Landscape pattern changes of Zhifanggou watershed during the late 20th century in North Shaanxi Province were studied.The results showed that grassland and forest were the main landscape tgres in the watershed,because of the policies of land withdrawing from cultivation.The landscape structure tended to be simplified,and the complexity of landscape were reduced,and spatial relationships among landscape elements were intensified.The whole ecological environment has been greatly improved.

Key words: Fenpropathrin, Phoxim, Mixture of pesticides, Soil microbe, Degradation

CLC Number:

Q149

DONG Youfu, ZHAO Yonghua, QUAN Zhijie. Landscape pattern changes in small watershed on the basis of policies of land withdrawing from cultivation[J]. cje, 2004, (6): 29-32.

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