The invention provides a
natural ecosystem investigation method. The
natural ecosystem investigation method comprises the following steps: S1, acquiring a high-resolution
remote sensing image and DEM data, and dividing
ecosystem types; s2, typical ecological problems of the ecological
system are determined,
sample plot design and
sample plot dynamic arrangement are carried out, investigation points are arranged in a
sample plot, and sampling analysis is carried out; and S3, performing
data analysis according to the plaque partition map, the sample plot
location map and the
remote sensing image map. According to the dynamic survey method combining
quadrat /
transect and sampling point actual
ground survey, the mutual
verification of ground,
remote sensing and model data is realized by combining a
satellite remote sensing and
model simulation technology with multiple data sources, typical / important ecological problem partitions in a
watershed ecosystem range are found out and verified, and a
watershed ecological
system is established. Support is provided for design and implementation of the
ecological engineering project, and a data index basis is provided for acceptance of the
ecological engineering project.