Post-Fire Watershed Response at the Wildland-Urban Interface, Southern California

摘要: In southern California, the unrelenting urban expansion into neighboring uplands has created a wildland-urban interface that is increasingly difficult to manage. September 2002, Williams Fire burned San Dimas Experimental Forest (SDEF), mostly at high severity. This event provided an opportunity describe and analyze impacts of fire historical management practice type-conversion on post-fire runoff, sediment yield, soil water repellency, vegetation recovery in chaparral ecosystems interface. Results indicate repellency increased with depth, declined time since fire, was inversely related moisture, only slightly different two pre-fire types. Herbaceous grasses forbs dominated initially, but all watersheds are reverting back their plant communities. Bare ground primarily as litter layer accumulated. Number species per watershed similar types, although composition different. Comparisons revealed magnitudes response for both Runoff large first year despite moderate rainfall. exceeded measurement equipment during