發(fā)布時(shí)間：2018-05-08 19:28

  本文選題：京津冀 + 植被退化　； 參考：《生態(tài)與農(nóng)村環(huán)境學(xué)報(bào)》2017年05期

【摘要】：植被凈初級(jí)生產(chǎn)力(NPP)是區(qū)域生態(tài)系統(tǒng)健康與退化的重要指示器之一。基于2000—2010年NPP數(shù)據(jù)和土地利用數(shù)據(jù),采用趨勢(shì)分析、疊加分析和顯著性檢驗(yàn)等方法,研究京津冀植被退化的空間格局,并分析其人為驅(qū)動(dòng)因素。結(jié)果表明:(1)研究區(qū)植被NPP多年均值(以C計(jì))集中在400~700 g·m~(-2)·a~(-1),高值區(qū)主要分布在燕山山脈、太行山山脈及太行山山脈東麓山前平原,低值區(qū)主要分布在冀西北草原區(qū)、研究區(qū)東部沿海地帶和冀東平原鹽堿地地區(qū)。(2)11 a間京津冀植被NPP呈減少趨勢(shì)的區(qū)域面積占研究區(qū)總面積的59.214%,其中,顯著和極顯著減少區(qū)域面積占10.050%,研究區(qū)局部區(qū)域植被發(fā)生明顯退化;京津冀區(qū)域植被退化總面積為21 545.07km~2,其中,重度退化面積為5 775.66 km~2,中度退化面積為8 168.18 km~2,輕度退化面積為7 601.23 km~2;研究區(qū)植被退化表現(xiàn)出明顯的空間聚集特征,一是太行山東麓呈條帶狀連片區(qū)域,二是京津唐都市圈呈環(huán)狀區(qū)域。(3)京津冀區(qū)域植被退化格局主要人文驅(qū)動(dòng)因素有3個(gè):一是城市(鎮(zhèn))蔓延式擴(kuò)張,研究區(qū)城市新增建成區(qū)面積與重度、中度、輕度退化面積之間的相關(guān)系數(shù)分別為0.897 9、0.783 5和0.686 9(P0.05);二是區(qū)域交通路網(wǎng)密度影響區(qū)域植被退化格局和程度,以重要交通線為核心,從核心到兩翼,植被退化程度逐漸降低;三是區(qū)域經(jīng)濟(jì)發(fā)展戰(zhàn)略和產(chǎn)業(yè)布局直接影響區(qū)域植被空間格局。
[Abstract]:NPP is one of the important indicators of regional ecosystem health and degradation. Based on NPP data and land use data from 2000 to 2010, the spatial pattern of vegetation degradation in Beijing, Tianjin and Hebei was studied by using trend analysis, superposition analysis and significance test. The results show that the vegetation NPP multiannual mean value (expressed as C) in the study area is 400 ~ 700g / m ~ (-1) ~ (-1) ~ (-1), the high value area is mainly distributed in the Yanshan Mountains, the Taihang Mountain range and the eastern Piedmont plain of the Taihang Mountain Mountains, and the low value area is mainly distributed in the northwest of Hebei Province. In the eastern coastal zone of the study area and the saline-alkali area of the eastern Hebei plain, the area where the NPP of the Beijing-Tianjin-Hebei vegetation is decreasing in the past 11 years accounts for 59.214 of the total area of the study area, in which, Significant and extremely significant reduction of regional area accounted for 10.050, and vegetation degradation occurred in some regions of the study area, and the total area of vegetation degradation in Beijing-Tianjin-Hebei region was 21,545.07km2, among which, The serious degraded area is 5 775.66 km / m ~ (2), the moderate degraded area is 8 168.18 km / m ~ (2), and the light degraded area is 7 601.23 km / m ~ (2). The vegetation degradation in the study area shows obvious spatial agglomeration, one is the belt connected area in the east foot of Taihang Mountain, Second, the Beijing-Tianjin-Tangshan Metropolitan Circle is an annular region. (3) the main human driving factors of vegetation degradation pattern in the Beijing-Tianjin-Hebei region are as follows: first, the urban (town) spreading expansion, the newly built area and the heavy area of the city in the study area are moderate. The correlation coefficient between light degraded area is 0.897 ~ 0.783 5 and 0.686 9 ~ (9) P _ (0.05) respectively, the second is that the density of regional traffic network affects the pattern and degree of regional vegetation degradation, with the important traffic line as the core, the degree of vegetation degradation decreases gradually from the core to the two wings. Third, regional economic development strategy and industrial layout directly affect the spatial pattern of regional vegetation.
【作者單位】： 河北師范大學(xué)資源與環(huán)境科學(xué)學(xué)院/河北省環(huán)境演變與生態(tài)建設(shè)重點(diǎn)實(shí)驗(yàn)室;河北師范大學(xué)旅游系;環(huán)境保護(hù)部南京環(huán)境科學(xué)研究所;中國(guó)環(huán)境科學(xué)研究院;
【基金】：國(guó)家社會(huì)科學(xué)基金(15BJY026)
【分類號(hào)】：Q948

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本文編號(hào)：1862749