Xyoo 2009 California Urban Forest Conference: “Tam sim no dab tsi? Tom ntej no yog dab tsi? Txoj Kev Qhia Tshiab rau Nroog thiab Zej Zog Hav Zoov" yog qhov ua tau zoo. Ntau tshaj 100 tus neeg koom ua ke hauv chav sib tham hauv Ventura raws li Andy Lipkis, Thawj Tswj Hwm ntawm Tsob Ntoo Tawg Rog, xa lub ntsiab lus tseem ceeb "Kev Koom Tes Zoo thiab Lub Zej Zog rau Kev Nyab Xeeb, Noj Qab Haus Huv thiab Lub Nroog Resilient". Cov neeg koom nrog koom nrog kev sib tham qhia txog kev tsim kho tshiab, cov tswv yim kev tswj hwm, thiab kev tshawb fawb tam sim no thiab kev txhim kho hauv nroog hav zoov. Tshaj 25 California ReLeaf Network cov tswv cuab pawg tau sawv cev.
Lub rooj sib tham tau cohosted los ntawm lub California Urban Forests Council. Kev nthuav qhia sai sai yuav muaj los ntawm lub vev xaib no.