In view of the limitation of"time-variant spectrum whitening"software that is used in some data processing centers,we then recommend here time-space variant spectrum whitening method.

Analysis of environmental factors impacting spatio-temporal variation ofbenthic community structure in Shenzhen Bay;

Spatio-temporal variation of macrobenthic community structure of tidal flat in Yueqing Bay;

Spatio-temporal variation of soil acidification in hilly red soil croplands;

Characteristics of temporal and spatial variation of salinity and their indicating significance in the Changjiang Estuary;

Based on the investigation from 2002 to 2003 in Funin Bay,temporal and spatial variation characteristics of active phosphorus and inorganic nitrogen, status in quo of nutrition and limitative factors of nutrition were studied.

A non-point source(NPS) pollution modeling system,the soil water and assessment tools for the Miyun Reservoir watershed,was used to identify temporal and spatial variations of NPS pollution in the watershed and to evaluate three pollution control scenarios.

Temporal and spatial change characteristics of soil elements in reclaimed slope forestland.;

The reasons inducing the temporal and spatial change of surface water quality in Jiyun river are following:the land use change,such as increase of agricul.

Based on the monthly precipitation data of 12 stations in northern China between April and September from 1951 to 1999, the grades for flood and drought is calculated by Z-index converting, and the temporal and spatial change of drought-flood in northern China(35°～41° N) for the last 50 a is discussesd.

GIS-based study on spatial-temporal changes of land use in Wuding River Basin in the 1990s;

Analyses on spatial-temporal change characteristics of NDVI during the past 25 years in Shanxi;

A study on the spatial-temporal changes of land-use in loess plateau in northern Shaanxi Province;