本文關(guān)鍵詞：道路干擾對瀾滄江流域景觀格局的影響，由筆耕文化傳播整理發(fā)布。

道路干擾對瀾滄江流域景觀格局的影響

Effect of Road Disturbance on Landscape Pattern in the Lancang River Valley

[1] [2] [3] [4] [5]

ZHANG Jing-hua＇ 2, FENG Zhi-ming1 , JIANG Lu-guang1 , YANG Yan-zhao1 , LIU Xiao-na1＇2 （1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 10010

[1]中國科學(xué)院地理科學(xué)與資源研究所,北京100101; [2]中國科學(xué)院大學(xué),北京100049

文章摘要：道路交通在促進(jìn)人類社會經(jīng)濟(jì)發(fā)展的同時，也給生態(tài)環(huán)境帶來了諸多影響。研究道路交通的干擾強(qiáng)度、空間格局及其影響，對保護(hù)自然環(huán)境、維持生態(tài)系統(tǒng)健康意義重大。研究基于道路等級、道路所處的環(huán)境特征等因素構(gòu)建道路干擾指數(shù)，定量評價了瀾滄江流域道路網(wǎng)絡(luò)的干擾強(qiáng)度，系統(tǒng)分析了流域道路干擾的空間格局特征及其對流域景觀的影響。結(jié)果表明，瀾滄江流域道路網(wǎng)絡(luò)干擾程度存在明顯的區(qū)域分異，中游和下游地區(qū)明顯大于上游地區(qū)。流域道路干擾域?yàn)檫吔鐝?fù)雜的不規(guī)則多邊形，，呈現(xiàn)出以離散的強(qiáng)干擾區(qū)域?yàn)橹行�，干擾強(qiáng)度向外圍逐漸減弱的空間格局。對比不同等級道路干擾域內(nèi)的景觀格局及其變化特征發(fā)現(xiàn)，耕地和建設(shè)用地等代表人類活動的景觀集中分布于道路強(qiáng)干擾區(qū)域內(nèi)，并且強(qiáng)干擾區(qū)域內(nèi)景觀組分的變化幅度遠(yuǎn)大于低干擾區(qū)域。從上述分析結(jié)果可以看出，道路對其沿線景觀格局的變化具有很強(qiáng)的驅(qū)動作用，流域道路發(fā)展應(yīng)避開生態(tài)環(huán)境敏感區(qū)域。

Abstr：Road plays an important role in the development of economy and society, but it also imposes a threat to environment and ecosystems. Research on such an effect is urgent for environ mental protection and ecosystem conservation. This paper quantified the intensity of road net work＇ s disturbance in the Lancang River Valley with a road disturbance index, which was estab lished based on the characteristics of a road and its surrounding environment, and then analyzed the spatial pattern of this disturbance and its impact on landscape. The results showed that there was obvious spatial difference of road disturbance intensity throughout the whole Lancang River Valley, the intensity in the middle and lower reaches was far more serious than that of the upper reaches. The road effectzones were irregular polygons with intricate boundary and taking the spa tially scattered severe effectzones as centers, the disturbance intensity decreased gradually out wards. Comparing landscape patterns and their transformation characteristics among different road effectzones, it was found out that cropland and builtup area were mainly distributed in severe effectzones, and the transformation in severe effectzones was far more violent than that in a wea ker one. The above results suggested that road development was an important driving force for landscape change, so sensitive areas should be avoided in the decisionmaking for new develop ment in the Lancang River Valley.

文章關(guān)鍵詞：

Keyword：:road network road ecology disturbance Lancang River Valley

課題項(xiàng)目：國家自然科學(xué)基金項(xiàng)目（41271117）;中國科學(xué)院地理科學(xué)與資源研究所“一三五”戰(zhàn)略科技計劃項(xiàng)目（2012SJ008）;科技部基礎(chǔ)性工作專項(xiàng)（2008FY110300）.

  本文關(guān)鍵詞：道路干擾對瀾滄江流域景觀格局的影響，由筆耕文化傳播整理發(fā)布。