It can be provided some scientific bases to assess the water environment situation of Yanhe River.

为合理评价延河水环境状况提供一定的科学依据。

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Yanhe River watershed, and show nearly East-West from the integration of areas in the central passage.

南河与秀延河分水岭近东西向从整合区中部通过。

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From the space distribution, potential vegetation biomass is higher than the reality of vegetation in the southeast of Yanhe River catchment, vegetation have better growth potential;

从空间分布上，流域东南部的大部分地区，植被潜在生物量高于现实生物量，植被有较好的生长潜力；

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