陜(shan)西(xi)合陽(yang)徐水河國家濕地公(gong)園橫貫縣境北(bei)(bei)部,為黃(huang)(huang)河晉陜(shan)段南北(bei)(bei)向寬闊河谷右岸黃(huang)(huang)河一級支流,西(xi)北(bei)(bei)起渭(wei)北(bei)(bei)黃(huang)(huang)土(tu)高原(yuan)黃(huang)(huang)龍山系的皇甫(fu)莊(zhuang)林場上馬西(xi),東南至百良(liang)鎮岔峪口,與陜(shan)西(xi)黃(huang)(huang)河濕地省級自然保(bao)(bao)護區(qu)(qu)(qu)相接(jie),全(quan)長36.4公(gong)里,總(zong)面(mian)積(ji)1386公(gong)頃(qing)。濕地公(gong)園共分為五(wu)個功能區(qu)(qu)(qu):保(bao)(bao)護保(bao)(bao)育(yu)區(qu)(qu)(qu),面(mian)積(ji)1075公(gong)頃(qing);恢復重建區(qu)(qu)(qu),面(mian)積(ji)156公(gong)頃(qing);宣教展(zhan)示區(qu)(qu)(qu),面(mian)積(ji)40公(gong)頃(qing);合理利(li)用區(qu)(qu)(qu),面(mian)積(ji)100公(gong)頃(qing);管理服務區(qu)(qu)(qu),面(mian)積(ji)15公(gong)頃(qing)。保(bao)(bao)護保(bao)(bao)育(yu)區(qu)(qu)(qu)和恢復重建區(qu)(qu)(qu)占總(zong)面(mian)積(ji)的88.8%。
濕(shi)地(di)(di)公(gong)園(yuan)共分五個(ge)功能區:保(bao)護保(bao)育區西(xi)北起皇甫莊林場(chang)的(de)上(shang)馬(ma)西(xi),南至百(bai)(bai)良(liang)(liang)鎮百(bai)(bai)良(liang)(liang)水(shui)庫壩(ba)頂(ding),面(mian)積(ji)(ji)1075公(gong)頃(qing),這是(shi)濕(shi)地(di)(di)公(gong)園(yuan)的(de)核心和(he)生態(tai)基質。恢復重(zhong)(zhong)建區西(xi)起百(bai)(bai)良(liang)(liang)鎮百(bai)(bai)良(liang)(liang)水(shui)庫壩(ba)頂(ding),東(dong)至百(bai)(bai)良(liang)(liang)鎮上(shang)黨河(he)村,面(mian)積(ji)(ji)156公(gong)頃(qing),以恢復和(he)重(zhong)(zhong)建完(wan)整濕(shi)地(di)(di)生態(tai)系(xi)統為(wei)(wei)主(zhu),著(zhu)力建設良(liang)(liang)好的(de)生態(tai)廊道,宣教展示(shi)(shi)區西(xi)起百(bai)(bai)良(liang)(liang)鎮上(shang)黨河(he)村,東(dong)至百(bai)(bai)良(liang)(liang)鎮郭(guo)家河(he)村,面(mian)積(ji)(ji)40公(gong)頃(qing),以典型河(he)流濕(shi)地(di)(di)、庫塘濕(shi)地(di)(di)為(wei)(wei)載(zai)體,主(zhu)要向游(you)客展示(shi)(shi)濕(shi)地(di)(di)科(ke)普知識。合理利用區西(xi)起百(bai)(bai)良(liang)(liang)鎮郭(guo)家河(he)村,東(dong)至岔峪(yu)口,面(mian)積(ji)(ji)100公(gong)頃(qing),以保(bao)護為(wei)(wei)前(qian)提,彰顯濕(shi)地(di)(di)文化,著(zhu)力打造黃(huang)河(he)之濱(bin)休(xiu)閑濕(shi)地(di)(di)。管理服務區面(mian)積(ji)(ji)15公(gong)頃(qing),主(zhu)要履行管理和(he)服務職能。
陜西合陽徐水河國(guo)家濕地(di)公園(yuan)的建設,對(dui)于(yu)打造(zao)西北地(di)區(qu)(qu)具有代表性(xing)半干旱區(qu)(qu)河流型國(guo)家濕地(di)公園(yuan)示(shi)范(fan),對(dui)于(yu)保護黃河濕地(di)生(sheng)物多樣(yang)性(xing)、強化陜西省(sheng)濕地(di)保護體系(xi)、維系(xi)黃河水生(sheng)態(tai)安全有著重要(yao)意(yi)義。