李鴻芝

摘要?[目的]分析巢湖流域生態(tài)環(huán)境質(zhì)量時空變化。[方法]利用巢湖流域2006年和2017年2個時相的Landsat系列衛(wèi)星影像，采用新型的遙感生態(tài)指數(shù)（RSEI）對研究區(qū)這11年間的生態(tài)環(huán)境質(zhì)量變化進行分析。[結(jié)果]隨著城市建成區(qū)的不斷擴展，巢湖流域生態(tài)質(zhì)量總體出現(xiàn)下降趨勢，研究時間內(nèi)RSEI均值從0.562下降至0.500;生態(tài)環(huán)境較差和差的區(qū)域面積增加了2.63%，生態(tài)環(huán)境優(yōu)良區(qū)域面積減少了18.79%。在空間分布上，合肥市區(qū)及舒城縣生態(tài)質(zhì)量相對較差，流域西南的岳西縣部分地區(qū)和廬江縣生態(tài)質(zhì)量較好，且研究時間內(nèi)合肥市區(qū)生態(tài)變差，肥西縣北部和廬江縣生態(tài)逐漸變好。[結(jié)論]總體來看，植被覆蓋的減少和建筑用地的擴張是導(dǎo)致巢湖流域生態(tài)質(zhì)量下降的重要因素。

關(guān)鍵詞?遙感生態(tài)指數(shù);巢湖流域;生態(tài)環(huán)境;Landsat數(shù)據(jù)

中圖分類號?S181.3文獻標識碼?A

文章編號?0517-6611（2019）16-0082-05

doi：10.3969/j.issn.0517-6611.2019.16.024

開放科學(xué)（資源服務(wù)）標識碼（OSID）：

Temporal?and?Spatial?Changes?of?Ecological?Environment?Quality?in?Chaohu?Basin?Based?on?RSEI

LI?Hong?zhi

（College?of?Geography?and?Tourism，?Anhui?Normal?University，Wuhu，Anhui?241000）

Abstract?[Objective]?The?research?aimed?to?analyze?the?temporal?and?spatial?changes?in?the?ecological?environment?quality?of?the?Chaohu?Basin.[Method]Using?the?Landsat?series?of?satellite?images?from?the?Chaohu?Basin?in?2006?and?2017，?the?new?remote?sensing?ecological?index?（RSEI）?was?used?to?analyze?the?ecological?environment?quality?changes?in?the?study?area?during?the?11?years.[Result]With?the?continuous?expansion?of?urban?built?up?areas，?the?overall?ecological?quality?of?Chaohu?Basin?had?decreased.?The?average?RSEI?value?decreased?from?0.562?to?0.500?during?the?studied?period;?the?areas?with?relatively?poor?and?poor?ecological?environment?increased?by?2.63%，?and?those?with?good?ecological?environment?decreased?by?18.79%.In?terms?of?spatial?distribution，?the?ecological?quality?of?Hefei?City?and?Shucheng?County?was?relatively?poor，?and?that?of?part?of?Yuexi?County?and?Lujiang?County?was?good.?Besides，?during?the?studied?period，?the?ecological?environment?in?Hefei?became?worse，?while?that?in?the?north?of?Feixi?County?and?Lujiang?County?became?better.[Conclusion]Overall，?the?reduction?of?vegetation?cover?and?the?expansion?of?construction?land?are?the?important?factors?leading?to?the?decline?of?ecological?quality?in?the?Chaohu?Basin.

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