RESEARCH; Prospects for Preservation and Restoration of Riparian Forests in the Sacramento Valley, California, USA

摘要

The GlS-based study analyzes the distribution and management of woody riparian vegetation in California's Sacramento Valley and discusses the prospects for its conservation. Although forests were the predominant floodplain vegetation prior to extensive settlement, only 3.3/100 of floodplain was covered by forest in the late 1980s. This remaining forest was fragmented into 2607 patches with an average area of 3.1 ha. Only 180 patches wre >10 ha, with three patches >100a. Despite over two dfecades fo conservation effrost, these forests are essentially unpreserved: Only 14.5/100 of extant forests are in public ownership or on land managed primarily for biological cosnervation.