草地生物量的研究进展

The Research Progress of Grassland Biomass

不同区域草地地上生物量和地下生物量的空间分布以及研究方法已被深入揭示.草地生物量随海拔梯度、水热条件、植被特征的变化形成不同的分布状态.草地生物量的研究方法大致分为传统研究方法(直接获取法)和新形势下的研究方法,包括遥感法、估算法、模型法.通过对上述研究方法的比较,表明了采用遥感法耦合估算法和模型法,能够更精准地确定不同区域草地地上及地下生物量的空间分布.

The spatial distribution and research methods of biomass and underground biomass on grassland in different areas have been revealed.The grassland biomass varies with the elevation gradient,water thermal condition and vegetation characteristics.The research methods of grassland biomass can be roughly divided into traditional research methods and research methods under the new situation.Among them,the traditional research method is the direct acquisition method.Under the new situation,the research methods include remote sensing method,estimation method and model method.The comparison of the above methods shows that the remote sensing method,the coupling estimation method and the model method can more accurately determine the spatial distribution of grassland aboveground and underground biomass in different regions.