GlobeLand30 shows little cropland area loss but greater fragmentation in China

GlobeLand30 shows little cropland area loss but greater fragmentation in China
复制标题

GlobeLand30 显示中国耕地面积损失较小,但破碎化程度较高

DOI:
10.1016/j.jag.2017.11.002
复制
发表时间:
2018-04
影响因子:
7.5
通讯作者:
Wu Wenbin
Wu Wenbin
中科院分区:
地球科学1区
文献类型:
--
作者:
Yu Qiangyi;Hu Qiong;van Vliet Jasper;Verburg Peter H.;Wu Wenbin

文献摘要

参考文献

被引文献

相似文献

在大的地理范围内,对耕地动态的理解主要是基于面积变化的观察,而景观格局的变化几乎没有评估。近年来,中国耕地总量保持相对稳定,这可能意味着变化不大。在这一分析中,我们联合收割机的耕地斑块数量(NP)和总耕地面积(TA)的耕地变化更全面的表征。我们使用GlobeLand 30-一个全球土地覆盖数据集,分辨率为30米,2000年和2010年-和每个县的TA和NP的变化为增加,稳定或减少的特征。这一特征表明,在2420个县中,有703个县既有耕地损失,又有破碎化加剧。在这些地区,特别是在华北平原,主要的耕地损失被转化为人工土地。另有212个国家的情况则相反:耕地增加,破碎化程度降低。这些县的主要特点是森林面积和草原面积的转换。这表明,中国的耕地保护政策有效地保护了总的耕地面积,但在碎片化方面的后果可能被低估。这两个指标没有明显变化的县,共有279个县,主要位于东南部。我们的研究结果进一步与地方一级的案例研究:公平的一致性表明应用GlobeLand 30跨尺度和跨站点比较分析景观变化的替代方案。
Understanding of cropland dynamics in a large geographical extent is mostly based on observations of area change, while the changes in landscape pattern are hardly assessed. The total amount of cropland in China has remained relatively stable in recent years, which might suggest there was little change. In this analysis, we combine the number of cropland patches (NP) with the total cropland area (TA) for a more comprehensive characterization of cropland change in China. We use GlobeLand30–a global land cover dataset with a 30 m resolution for the years 2000 and 2010–and characterize changes in TA and NP for each county as increase, stable, or decrease. This characterization shows that 703 out of 2420 counties experienced both cropland loss and increased fragmentation. The predominant cropland loss in these areas, especially in the North China Plain, is converted to artificial land. Another 212 are characterized by the opposite developments: an increase in cropland and decreased fragmentation. These counties, are mainly characterized by a conversion of forest areas and grassland areas. It suggests that the cropland conservation policy in China effectively protected the total cropland area in overall, but the consequences in terms of fragmentation might be underestimated. Counties with no obvious change in both indicators, measuring 279 counties, are mainly located in the Southeast. Our results are further compared with local level case studies: the fair consistency indicates alternatives of applying GlobeLand30 for analyzing landscape changes across scales and for cross-site comparisons.
DOI: 10.1016/j.ecolind.2009.04.017
发表时间: 2010-03
影响因子: 6.9
作者:
Jian Peng;Yanglin Wang;Yuan Zhang-;Jiansheng Wu;Weifeng Li;You Li
通讯作者: Jian Peng;Yanglin Wang;Yuan Zhang-;Jiansheng Wu;Weifeng Li;You Li
DOI: 10.1016/j.landurbplan.2014.09.001
发表时间: 2015
影响因子: 9.1
作者:
J. Vliet;H. Groot;P. Rietveld;P. Verburg
通讯作者: J. Vliet;H. Groot;P. Rietveld;P. Verburg
DOI: 10.1016/j.gloenvcha.2017.02.001
发表时间: 2017-03
影响因子: 8.9
作者:
J. Vliet;David A. Eitelberg;P. Verburg
通讯作者: J. Vliet;David A. Eitelberg;P. Verburg
eFarm:更好地观察农业土地系统的工具
DOI: 10.3390/s17030453
发表时间: 2017-02-24
期刊: Sensors (Basel, Switzerland)
影响因子: --
作者:
Yu Q;Shi Y;Tang H;Yang P;Xie A;Liu B;Wu W
通讯作者: Wu W
DOI: 10.1016/j.agee.2003.09.008
发表时间: 2004-02-01
影响因子: 6.6
作者:
Pontius, RG;Shusas, E;McEachern, M
通讯作者: McEachern, M