高郵(you)湖(hu)(hu),古名(ming)(ming)(ming)樊良(liang)湖(hu)(hu),又名(ming)(ming)(ming)新開湖(hu)(hu)。屬(shu)淮河流域(yu),淮河入江(jiang)水(shui)道穿(chuan)湖(hu)(hu),終達長(chang)(chang)(chang)江(jiang)。跨江(jiang)蘇(su)(su)省(sheng)(sheng)高郵(you)市、寶應縣(xian)(xian)、金湖(hu)(hu)縣(xian)(xian)與安徽省(sheng)(sheng)天(tian)長(chang)(chang)(chang)市,水(shui)域(yu)總面積為760.67平(ping)方公里(平(ping)水(shui)面積),僅(jin)次于太湖(hu)(hu),洪澤湖(hu)(hu),為江(jiang)蘇(su)(su)省(sheng)(sheng)的第三大湖(hu)(hu)。一般(ban)水(shui)位5.55米(mi)深。屬(shu)跡(ji)洼(wa)地(di)型湖(hu)(hu)泊(bo),水(shui)面寬廣(guang),環境優美,物產(chan)豐(feng)富(fu)。高郵(you)湖(hu)(hu)大閘(zha)蟹、高郵(you)湖(hu)(hu)龍蝦是著名(ming)(ming)(ming)的品(pin)種之(zhi)一,魚蝦的產(chan)量也很大。高郵(you)湖(hu)(hu)是天(tian)長(chang)(chang)(chang)水(shui)路入江(jiang)通道。在,龜、蝦、蟹等(deng)水(shui)產(chan)品(pin)豐(feng)富(fu),亦以產(chan)鴨著名(ming)(ming)(ming)。
蘆(lu)葦迷(mi)宮(gong)(gong)是高(gao)郵(you)湖蘆(lu)葦蕩濕地公園的核心(xin)部(bu)分,屬(shu)原(yuan)(yuan)生態湖泊濕地,總(zong)面積約80萬平方米,是大世界基尼斯認證為“中(zhong)國最(zui)大原(yuan)(yuan)生態水(shui)上蘆(lu)葦迷(mi)宮(gong)(gong)”,其中(zhong)大小灘涂、河港星羅棋布,魚(yu)蝦肥美(mei),擁(yong)有多種鳥類、水(shui)生植物及濕地植被,來這里(li)不僅能欣(xin)賞(shang)蘆(lu)葦搖(yao)曳(ye)生姿,還能一(yi)覽(lan)原(yuan)(yuan)始的濕地風貌。更(geng)是被人們(men)譽為“天(tian)然氧倉”。
高(gao)(gao)郵湖湖底(di)平坦,湖底(di)高(gao)(gao)程3.5-4.5米(mi)(mi)(mi),高(gao)(gao)郵湖常年(nian)水(shui)位(wei)(wei)5-5.5米(mi)(mi)(mi),蓄水(shui)5-6億(yi)(yi)立方米(mi)(mi)(mi),汛期蓄水(shui)9.38億(yi)(yi)立方米(mi)(mi)(mi)。死水(shui)位(wei)(wei)5米(mi)(mi)(mi),死庫容4.6億(yi)(yi)立米(mi)(mi)(mi),蓄水(shui)位(wei)(wei)5.7米(mi)(mi)(mi),蓄水(shui)面積648平方公里,灌溉庫容4.2億(yi)(yi)立米(mi)(mi)(mi),防洪水(shui)位(wei)(wei)9.24米(mi)(mi)(mi),防洪庫容27億(yi)(yi)立米(mi)(mi)(mi),蒸(zheng)發量890毫米(mi)(mi)(mi)。
湖(hu)水呈黃(huang)綠色至(zhi)淡(dan)黃(huang)色,為重碳酸(suan)鹽(yan)類鈣組I型(xing)水。據(ju)2010年數據(ju),高郵湖(hu)pH平(ping)(ping)均值(zhi)為8.66,溶解氧(yang)平(ping)(ping)均值(zhi)為7.3毫(hao)克(ke)/升(sheng)(sheng),總氮平(ping)(ping)均值(zhi)為1.02毫(hao)克(ke)/升(sheng)(sheng),總磷(lin)平(ping)(ping)均值(zhi)為0.051毫(hao)克(ke)/升(sheng)(sheng),CODMn平(ping)(ping)均值(zhi)為9.61毫(hao)克(ke)/升(sheng)(sheng),葉(xie)綠素a平(ping)(ping)均值(zhi)為10.38毫(hao)克(ke)/升(sheng)(sheng),透明度平(ping)(ping)均值(zhi)為0.69米。
高(gao)郵湖地(di)處長(chang)江、淮河下游內陸(lu)水域,浮游植物有(you)9門(men)(men)156屬(shu)(shu)(shu)(shu),其(qi)中蘭藻門(men)(men)29屬(shu)(shu)(shu)(shu),占(zhan)(zhan)(zhan)18.6%,隱藻門(men)(men)2屬(shu)(shu)(shu)(shu),占(zhan)(zhan)(zhan)1.3%,金藻門(men)(men)5屬(shu)(shu)(shu)(shu),占(zhan)(zhan)(zhan)3.2%,黃藻門(men)(men)2屬(shu)(shu)(shu)(shu),占(zhan)(zhan)(zhan)1.3%,硅藻門(men)(men)29屬(shu)(shu)(shu)(shu),占(zhan)(zhan)(zhan)18.6%,甲(jia)藻門(men)(men)4屬(shu)(shu)(shu)(shu),占(zhan)(zhan)(zhan)2.6%,裸藻門(men)(men)6屬(shu)(shu)(shu)(shu),占(zhan)(zhan)(zhan)3.8%,綠藻門(men)(men)78屬(shu)(shu)(shu)(shu),占(zhan)(zhan)(zhan)50%,輪藻門(men)(men)1屬(shu)(shu)(shu)(shu),占(zhan)(zhan)(zhan)0.6%。浮游動物有(you)288種,其(qi)中原生(sheng)動物94種,占(zhan)(zhan)(zhan)32.6%,輪蟲106種,占(zhan)(zhan)(zhan)36.8%,枝角類(lei)50種,占(zhan)(zhan)(zhan)17.4%,橈足類(lei)38種,占(zhan)(zhan)(zhan)13.2%。
底(di)棲動物(wu)(wu)有92種(zhong)(zhong)(zhong),其(qi)中軟體(ti)動物(wu)(wu)腹足(zu)類15種(zhong)(zhong)(zhong),占(zhan)(zhan)(zhan)16.3%,斧足(zu)類22種(zhong)(zhong)(zhong),占(zhan)(zhan)(zhan)23.9%,節(jie)肢動物(wu)(wu)的(de)甲殼(ke)類14種(zhong)(zhong)(zhong),占(zhan)(zhan)(zhan)15.2%,水生昆蟲16種(zhong)(zhong)(zhong),占(zhan)(zhan)(zhan)17.4%,環節(jie)動物(wu)(wu)的(de)多毛類3種(zhong)(zhong)(zhong),占(zhan)(zhan)(zhan)3.3%,寡(gua)毛類7種(zhong)(zhong)(zhong),占(zhan)(zhan)(zhan)7.6%,蛭類3種(zhong)(zhong)(zhong),占(zhan)(zhan)(zhan)3.3%,其(qi)他12種(zhong)(zhong)(zhong),占(zhan)(zhan)(zhan)13%。
水(shui)生植物(wu)共(gong)29科(ke)(ke)(ke)(ke)(ke)(ke)(ke)62種(zhong)(zhong),其中萍(ping)科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、水(shui)蕨科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、芡科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、菱科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、柳葉菜(cai)(cai)科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、唇形(xing)科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、胡麻科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、貍藻科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、金魚科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、桔梗科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、黑三(san)棱(leng)科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、茨(ci)藻科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、燈心草科(ke)(ke)(ke)(ke)(ke)(ke)(ke)各(ge)(ge)1種(zhong)(zhong),各(ge)(ge)占1.6%,槐葉萍(ping)科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、繖形(xing)科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、龍(long)膽科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、玄參科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、澤(ze)瀉科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、天南星科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、浮萍(ping)科(ke)(ke)(ke)(ke)(ke)(ke)(ke)各(ge)(ge)2種(zhong)(zhong),各(ge)(ge)占3.2%;小二仙草種(zhong)(zhong)、雨久花科(ke)(ke)(ke)(ke)(ke)(ke)(ke)各(ge)(ge)3種(zhong)(zhong),各(ge)(ge)占4.8%,睡蓮(lian)科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、蓮(lian)子(zi)菜(cai)(cai)科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、菜(cai)(cai)苤科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、禾本(ben)科(ke)(ke)(ke)(ke)(ke)(ke)(ke)、莎草科(ke)(ke)(ke)(ke)(ke)(ke)(ke)各(ge)(ge)4種(zhong)(zhong),各(ge)(ge)占6.5%,蓼科(ke)(ke)(ke)(ke)(ke)(ke)(ke)8種(zhong)(zhong),占12.9%。
魚類(lei)計有(you)24科(ke)(ke)74屬(shu)109種。作為捕(bu)撈(lao)對象的(de)主要(yao)有(you)鯉(li)科(ke)(ke)、鳀科(ke)(ke)、銀(yin)魚科(ke)(ke)、鯰科(ke)(ke)、鮠科(ke)(ke)、鰻鱺科(ke)(ke)、鯔科(ke)(ke)、鮨科(ke)(ke)、鱧科(ke)(ke)、合鰓科(ke)(ke)、塘鱧科(ke)(ke)、杜(du)文魚科(ke)(ke)等12科(ke)(ke),主要(yao)有(you)鯉(li)、鯽、青(qing)、草、鰱(lian)、鳙、鳊、魴、、紅(hong)(hong)鰭鲌(ba)、蒙古紅(hong)(hong)鲌(ba)、翹咀紅(hong)(hong)鲌(ba)、條、鳡魚、鰟鮍(pi)、大銀(yin)魚、太湖短吻銀(yin)魚、梅(mei)鱭、鯰魚、黃顙魚、河(he)鰻、鱖魚、黑魚等。另外,還有(you)蝦、蟹和貝類(lei)。高郵湖在三(san)河(he)閘(zha)建閘(zha)之前,青(qing)、草、鰱(lian)、鳙四大家魚的(de)捕(bu)撈(lao)量,1952年(nian)占總捕(bu)撈(lao)量的(de)12%,1953年(nian)建閘(zha)后(hou),四大家魚捕(bu)撈(lao)量逐年(nian)減少,到1960年(nian),僅占捕(bu)撈(lao)量的(de)0.16%,幾乎(hu)到了絕跡的(de)程度。
江蘇省湖蕩灘地多,水生經濟植物資源豐富,可分為挺水植物、浮葉植物、漂浮植物和沉水植物四大類。主要品種如下:挺水植物有蓮藕、蘆葦、蒲草等。一般生長在靠近岸邊水淺的地方,植株挺立于水中,部分基葉伸出水面。省內淡水水域均有分布,特別是湖泊、河蕩地區資源豐富。浮葉植物有菱、芡實、莼菜等,根生在水底,莖比較柔軟,葉片浮于水面。菱主要分布在里下河、蘇州水網地區;芡實在湖蕩、港汊和漚田均有分布;莼菜以太湖東山所產有名。漂浮植物有水葫蘆、水浮蓮、浮萍等,整株植物飄浮水面,其根不著生于水底,省內河溝和湖蕩地區均有分布,資源比較豐富。沉水植物有有苦草、馬來眼子菜、輪葉黑藻等,植株生于水中,湖蕩地區均有分布,資源豐富。