Cov kab mob tuag taus hem cov ntoo ntoo hauv zos; Cov nplaim hluav taws raug xa mus rau lwm qhov chaw yog qhov kev txhawj xeeb tshaj plaws
Hnub Thursday, Tsib Hlis 24, 2012
Fallbrook Bonsall Zos Xov Xwm
Andrea Verdin
Tus Kws Sau Ntawv
Fallbrook's iconic oaks tej zaum yuav muaj kev phom sij loj ntawm kev kis kab mob thiab kev puas tsuaj.
Raws li Jess Stoffel, tus thawj coj zaub rau Lub Nroog San Diego, tus goldspotted oak borer (GSOB), los yog agrilus coxalis, tau kuaj pom thawj zaug hauv lub nroog hauv xyoo 2004 thaum lub sij hawm tshawb fawb ntxiab rau cov kab tsuag ntoo.
"Nyob rau xyoo 2008 tus kab mob no tau txuas mus rau qib siab ntawm cov ntoo qhib kev tuag nyob rau hauv San Diego County txij li xyoo 2002," nws hais hauv email rau cov thawj coj hauv zej zog. "Nws muaj nyob hauv California tuaj yeem rov qab mus rau thaum ntxov li xyoo 1996, raws li kev tshuaj xyuas ntawm cov ntoo qhib uas tau tua yav dhau los."
GSOB, uas yog ib txwm nyob hauv Arizona thiab Mexico, zoo li yuav nkag mus rau sab qab teb California ntawm cov ntoo qhib ntoo. Roger Boddaert, lub npe hu ua "tus txiv neej tsob ntoo" ntawm Fallbrook, tau hais tias nws "tau paub ntau" ntawm cov kab no thiab lwm yam kab mob.
Boddaert tau hais tias "Qhov feem ntau, muaj plaub hom tsiaj tseem ceeb uas tus borer tawm tsam, suav nrog peb cov neeg hauv paus txawm ntug hiav txwv California Live Oak," Boddaert hais. "Tsis ntev los no kuv tau mus koom lub rooj sib tham ntawm Pechanga Government Center ntawm tus borer thiab lwm yam kev txhawj xeeb ntawm cov ntoo qhib. Muaj kev tuaj koom coob los ntawm US Forest Dept., UC Davis thiab Riverside, thiab txhua tus neeg ua si loj hauv qhov kev txhawj xeeb loj no. "
Nws yog ib qho kab mob loj ntawm ntug dej hiav txwv nyob Oak, Quercus agrifolia; hav zoov nyob Oak, Q. chrysolepis; thiab California dub ntoo qhib, Q. keloggii hauv California thiab tau tua ntau tshaj 20,000 tsob ntoo thoob plaws 620,000 daim av.
Boddaert tau hais tias GSOB tau raug txheeb xyuas nyob rau hauv Julian, yav qab teb San Diego County, thiab feem ntau nyob rau hauv toj siab.