The scale dependency of spatial crop species diversity and its relation to temporal diversity.

ABSTRACT: Increasing crop species diversity can enhance agricultural sustainability, but the scale dependency of the processes that shape diversity and of the effects of diversity on agroecosystems is insufficiently understood. We used 30 m spatial resolution crop classification data for the conterminous United States to analyze spatial and temporal crop species diversity and their relationship. We found that the US average temporal (crop rotation) diversity is 2.1 effective number of species and that a crop's average temporal diversity is lowest for common crops. Spatial diversity monotonically increases with the size of the unit of observation, and it is most strongly associated with temporal diversity when measured for areas of 100 to 400 ha, which is the typical US farm size. The association bet

SUBMITTER: Aramburu Merlos F 

PROVIDER: S-EPMC7584990 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature