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土壤形成是MA框架下生态系统支持功能的基本内容。运用GIS空间分析功能,测算了青海三江源区生态系统支持功能,结果表明:①源区土壤形成和生态系统支持功能呈从东南向西北降低的趋势;②源区各生态系统土壤形成的支持功能具有湿地生态系统>森林和草地生态系统>农田生态系统>荒漠和裸土地及裸岩石砾地的特点;③源区各生态系统支持功能具有从湿地生态系统、森林生态系统、草地生态系统、农田生态系统到荒漠和裸土地及裸岩石砾地依次降低的趋势;④草地生态系统退化诱导草地土壤形成功能的退化,进而驱使草地生态系统支持功能的降低;⑤强度人为干扰造成生态系统土壤各种性状向退化方向发展,土壤形成及生态系统支持功能下降。结果有助于丰富人们从土壤形成视角,对生态系统支持功能的理解和认识。
Soil formation is the basic content of the ecosystem support function under MA framework. Using GIS spatial analysis, the function of ecosystem support in the Three Rivers Headwaters area of Qinghai Province was calculated. The results showed that: ① The trend of soil formation and ecosystem support in the source area decreased from southeast to northwest; ② The supporting function of soil formation in each ecosystem in source area Wetland ecosystems> forest and grassland ecosystems> farmland ecosystems> deserts and bare land and bare rocky gravel landforms. (3) Each ecosystem support function in the source area has the following characteristics: wetland ecosystem, forest ecosystem, grassland ecosystem, The ecological system to the desert and bare land and bare rock gravel in turn reduce the trend; ④ grassland ecosystem degradation induced degradation of grassland soil formation function, which in turn led to grassland ecosystem support function to reduce; ⑤ Intensity of man-made interference caused by various types of ecosystem soils Traits develop towards degeneration, soil formation and ecosystem support decline. The results contribute to enriching people’s understanding of and understanding of ecosystem support functions from the perspective of soil formation.