|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Land use changes and their relations with carbon cycles over the past 300 a in China显示文摘Land use and land cover in China have changed greatly during the past 300 a, indicated by the rapid abrupt decrease of forest land area and the rapid increase of cropland area, which can affect terrestrial carbon cycle greatly. The first-hand materials are used to analyze main characteristics for land use and land cover changes in China during the study period. The following conclusions can be drawn from this study. The cropland area in China kept increasing from 60.78×106 hm2 in 1661 to 96.09×106 hm2 in 1998. Correspondingly, the forest land area decreased from 248.13×106 hm2 in 1700 to 109.01×106 hm2 in 1949. Affected by such changes, the terrestrial ecosystem carbon storage decreased in the mean time. Car-bon lost from land use and land cover changes mainly consist of the loss from vegetation biomass and soil. In the past 300 a, about 3.70 PgC was lost from vegetation biomass, and emissions from soil ranged from 0.80 to 5.84 PgC. The moderate evaluation of soil losses was 2.48 PgC. The total loss from vegetation and soil was between 4.50 and 9.54 PgC. The moderate and optimum evaluation was 6.18 PgC. Such carbon losses distribution varied spatially from region to region. Carbon lost more significantly in Northeast China and Southwest China than in other regions, because losses of forest land in these two regions were far greater than in the other regions during the past 300 a. And losses of carbon in the other regions were also definite, such as Inner Mongolia, the western part of South China, the Xinjiang Uygur Autonomous Region, and the Qinghai-Tibet Plateau. But the carbon lost very little from the traditional agricultural regions in China, such as North China and East China. Studies on the relationship between land use and land cover change and carbon cycle in China show that the land use activities, especially those related to agriculture and forest management, began to affect terrestrial carbon storage positively in recent years. | GE QuanSheng DAI JunHu HE FanNeng PAN Yuan WANG MengMai | 2008 | Science China Earth Sciences2008，51，6： | 30 |
| 2 | Comparisons of cropland area from multiple datasets over the past 300 years in the traditional cultivated region of China显示文摘陆地使用 / 盖住变化是在气候和生态的模拟的一个重要参数。尽管他们广泛地在社区,半自动地面防空系统数据集和 HYDE 数据集被使用了,二代表性的全球历史的陆地使用数据集,很少在地区性的规模关于他们的精确性被估计。这里,我们为中国(TCRC ) 的传统的栽培区域执行了一些评价在上持续 300 年,由把 SAGE2010 和 HYDE (v3.1 ) 与中国历史的农田数据集(CHCD ) 作比较。比较在三空间规模被执行:由 60 km 格子房间的全部学习区域,省的区域和 60 km。结果证明(1 ) 从 SAGE2010 的农田区域从 CHCD 是多于那的大部分;而且,以在 1950 以后的从 1700 ~ 1950 和 0.34% 的 0.51% 的率的生长从 CHCD 与那也不一致。(2 ) HYDE 数据集(v3.1 ) 在全部学习区域上比半自动地面防空系统数据集接近了 CHCD 数据集。然而,大偏爱能被 60 km 格子房间规模在省的规模和 60 km 检测。有比70%大的偏爱的格子房间的百分比(<-70%或>70%)并且90%(<-90%或>90%)当那些有的偏爱为仅仅5%6%从10%~10%并且从30%~30%报道 时,分别地说明了全部的格子房间的56%63%和40%45%并且17%全部的格子房间分别地。(3 ) 用本地历史的档案,有高精确性的历史的数据集将是改进气候和生态的模拟的精确性的一个珍贵方法重建。 | HE Fanneng LI Shicheng ZHANG Xuezhen GE Quansheng DAI Junhu | 2013 | Journal of Geographical Sciences2013，23，6： | 21 |
| 3 | Forest change of China in recent 300 years显示文摘基于历史的文件,现代调查和统计,以及前辈研究,趋势和森林动力学的主要过程的结果被认出。森林区域和森林范围从 1700 ~ 1949 | HE Fanneng GE Quansheng DAI Junhu RAO Yujuan | 2008 | Journal of Geographical Sciences2008，18，1： | 15 |
| 4 | Evaluating the accuracy of Chinese pasture data in global historical land use datasets显示文摘Global historical land use datasets are widely used in global environmental change studies; however, uncertainties in the included pasture data have not been evaluated. In this study, using trend, relative difference ratio(RDR), and spatial comparisons, we evaluated the accuracy of China pasture data in the HYDE(versions 3.1 and 3.2), SAGE, and PJ datasets using historical document-based reconstructions, including the land use datasets for China covering 1935–1997(hereafter Ge-dataset)and Northeast China covering the 1700 s–2000(hereafter Ye-dataset), and the satellite-based China's Land-Use/cover Datasets(CLUDs) for 1980–2015. Four important results were obtained.(1) China pasture area in the HYDE, SAGE, and PJ datasets and grassland area in the Ge-dataset, Ye-dataset, and CLUDs show both disparate trends and large differences in absolute values.(2)Spatially, 50.9%, 52.8%, and 63.0% pasture/grassland grids in 2000 had RDRs greater than 60% between HYDE3.1, HYDE3.2,and SAGE datasets, and CLUDs, respectively. The percentage of grids with RDRs less than 20% were 24.9%, 26.7%, and 16.0%,respectively.(3) Based on HYDE3.2, the spatial distribution of pasture in Northeast China over the last 300 year has expanded,which is in contrast to the results from the Ye-dataset, which shows the spatial distribution of grassland shrinking because of human reclamation activities.(4) The large contrasts between the global datasets and Chinese native datasets are due to differences in pasture/grassland definitions, land use practices, and spatial reconstruction methods. | Fanneng HE Shicheng LI Fan YANG Meijiao LI | 2018 | Science China Earth Sciences2018，61，11： | 7 |
| 5 | Reconstruction of cropland area and spatial distribution in the mid-Northern Song Dynasty (AD1004-1085)显示文摘为了理解历史的导致人的土地,盖住变化和它的气候的效果,与明确的空间信息创造历史的陆地使用数据集是必要的。用税农田区域和从历史的文件编的家庭的数字,我们在每陆(在北歌王朝的一个省级的政治区域) 以内估计了真实农田区域和人口在中间 -- 北歌王朝(AD1004-1085 ) 。评价通过分析税,人口和农业开发的当代的政策被完成。然后,我们把政治基于区域的农田区域变换成地理上明确的格子在由 60 km 的 60 km 的房间尺寸的基于房间的部分农田。变换作为独立变量用地志的斜坡,高度和人口密度基于每个格子房间的精明的耕作适用性。作为结果,在在 1070 年代的北歌领土以内的农田的全部的区域被估计是大约 7.2 亿亩(中国区域单位, 1 亩 = 666.7 m2 ) ,哪个 40.1% 和 59.9% 分别地发生在北方和南方。人口被估计是大约 8720 万,哪个 38.7% 和 61.3% 分别地在北方和南方,并且人均的农田区域是大约 8.2 亩。国家吝啬的开垦比率(即到全部的土地的农田区域的比率区域;RRA 此后为短) 是一回 16.6% 。平凡区域例如诺思中国平原,中间和长江的更低的活动范围, Guanzhong 平原,包围东廷·莱克和波伊昂·莱克和四川盆的平原,有更高的 RRA,主要是超过 40% ;当时多山、多山的区域例如 Nanling 山的南方,西南区域(排除 Chengdu 平原) ,黄土高原和东南沿海的区域,有更低的 RRA,是不到 20% 。而且, RRA 与地志的斜坡和高度变化了。在低高度(250 m ) 的区域,中间的高度(250100 m ) 和高高度(10003500 m ) ,有 4.43 亿, 2.15 亿并且 6400 万亩农田分别地并且他们的地区性的吝啬的 RRA 分别地是 27.5% , 12.6% 和 7.2% 。在扁平的斜坡,轻轻的斜坡,中等斜坡和陡峭的斜坡的区域,有 1.16 亿, 4.56 亿, 1.44 亿并且 200 万亩农田分别地并且他们的地区性的吝啬的 RRA 分别地是 34.6% , 20.7% , 8.5% 和 2.3% 。 | HE Fanneng LI Shicheng ZHANG Xuezhen | 2012 | Journal of Geographical Sciences2012，22，2： | 7 |
| 6 | Comparison of changes in land use and land cover in China and the USA over the past 300 years显示文摘在在在长时间规模上的不同国家之间的陆地使用和陆地盖子的变化的比较研究在处于不同状况理解这些变化的过程和驱动力是有用的。我们在过去的 300 年比较了并且分析在瓷器大陆和有共同边界的美国之间的农田,森林和草地的时间、空间的特征。我们发现在过去的 300 年,农田的区域在中国并且在 USA 显示出一个全面增加趋势。在中国,农田的区域增加了大约 79.46 ? 慷浲湩 ? 湡 ? 湩牣慥楳杮挠楬慭整攠瑸敲敭攠敶瑮 ? 潷汵? 污整 ? 桴 ? 慭湧瑩摵 ? 湡 ? 灳瑡潩整灭牯污瀠瑡整湲 ? 景朠潬慢 ? 整牲獥牴慩?偎 | HE Fanneng LI Meijiao LI Shicheng XIAO Ran | 2015 | Journal of Geographical Sciences2015，25，9： | 3 |
| 7 | An approach to spatially explicit reconstruction of historical forest in Northeast China显示文摘历史的陆地封面数据集的空间地明确的重建在学习陆地使用和陆地封面变化(LUCC ) 的气候、生态的效果起一个重要作用。用潜在的自然植被(PNV ) 和基于卫星的陆地使用数据,我们当人的骚乱不在时决定了森林盖子的可能的最大的分发程度。随后,地形学和气候因素被选择为耕作估计土地的适用性。最后,一个历史的森林区域分配模型为耕作根据土地的适用性被设计。作为案例研究,我们使用了历史的森林区域分配模型重建在有一个 10-km 决定的东北中国的为 1780 和 1940 的森林盖子。验证模型,我们为 2000 把基于卫星的森林盖子数据与我们的重建作比较。绝对偏爱的一个样品 t 测试证明二尾巴的意义是 0.12,比重要水平大 0.05,建议模型有强壮的能力捕获森林的空间分发。另外,我们在东北中国为 1780 在县规模计算了我们的重建的相对差别。差别其亲戚从 30% ~ 30%的县的数字是 99,为 74.44% 所有县的财务。这些调查结果证明省的森林区域能用模型被转变成森林盖子地图很好。 | LI Shicheng HE Fanneng ZHANG Xuezhen | 2014 | Journal of Geographical Sciences2014，24，6： | 2 |
| 8 | Evaluating the reliability of global historical land use scenarios for forest data in China显示文摘Global historical land use scenarios are widely used to simulate the climatic and ecological effects of changes in land cover;however,reliability evaluation of these scenarios for data on China’s forests is missing.By using a historical document-derived Chinese forest dataset(CHFD)for the years 1700–2000,we evaluated the reliability of data on forests in China over three global scenarios-SAGE(Center for Sustainability and the Global Environment),PJ(Pongratz Julia),and KK10(Kaplan and Krumhardt 2010)-through trend-related,quantitative,and spatial comparisons.The results show the following:(1)Although the area occupied by forests in China in the SAGE,PJ,KK10,and CHFD datasets decreased over the past 300 years,there were large differences between global scenarios and CHFD.The area occupied by forests in China in the SAGE scenario for 1700–1990 was 20%–40%more than that according to CHFD,and that occupied by forests in the KK10 from 1700 to 1850 was 32%–46%greater than that in CHFD.The difference between the PJ and CHFD was lower than 20%for most years.(2)Large differences were detected at the provincial and grid cell scales,where the PJ scenario was closer to CHFD in terms of total forested area.Provinces with large differences in terms of trend and quantity were 84%and 92%of all provinces,respectively.Grid cells with relative differences greater than 70%accounted for 60%–80%of all grids.(3)These global historical land use scenarios do not accurately reveal the spatiotemporal pattern of Chinese forests due to differences in the data sources,methods of reconstruction,and spatial scales. | YANG Fan HE Fanneng LI Meijiao LI Shicheng | 2020 | Journal of Geographical Sciences2020，30，7： | 1 |
| 9 | Spatially explicit reconstruction of cropland cover for China over the past millennium显示文摘Reconstructing historical land use and land cover change using explicit temporal,quantitative,and spatial information is not only the prerequisite for simulating long-term climate change and ecological effects but is also a scientific basis for comprehensively understanding the process and mechanism of anthropogenic land use alterations.Considering changes in historical borders and administrative divisions,a provincial cropland area dataset for China over the past millennium was created on the basis of existing estimations since the Song Dynasty.Land suitability for cultivation was then assessed by incorporating altitude,slope,soil texture,and the maximum potential productivity of climate.Subsequently,a gridding allocation model for cropland was constructed,and the provincial cropland area for 24 years over the past millennium was allocated into grids with a resolution of 10 km.The cropland area in China increased from 3.71×10^(7)ha in AD 1000 to 12.92×10^(7)ha in AD 1999,with a peak of 13.50×10^(7)ha in AD 1980.The total cropland area in China showed fluctuating increasing trends that can be divided into three phases:fluctuation without notable net change for AD 1000–1290,slow increase for AD 1290–1661,and rapid increase for AD 1661–1999.Spatially,cropland intensified in the middle-lower reaches of the Yellow and Yangtze Rivers and expanded to mountainous and frontier areas over the last millennium.Specifically,over the entire period,the fractional cropland areas(FCAs)in the middle-lower reaches of the Yellow and Yangtze Rivers increased by 1.4 and 0.8 times,respectively.Since the mid-Qing Dynasty,large-scale land reclamation expanded to areas of low reclamation in southwest and northeast China.The FCAs for southwest and northeast China increased from 2.13%and 0.55%in AD 1661 to 18.00%and 26.61%in AD 1999,respectively.For AD 1661–1999,the proportion of cropland increased by 55%in the hills and low mountains and 27%in the middle and high mountains.The comparison with remote sensing cropland data shows that the grid cells with absolute differences of 0–10%accounted for 70.35%of all grid cells,while grids with differences exceeding 60%accounted for only 0.83%.This finding indicates that the reconstruction method is feasible,and the reconstruction results objectively reveal the historical spatiotemporal changes in cropland. | Fanneng HE Fan YANG Caishan ZHAO Shicheng LI Meijiao LI | 2023 | Science China Earth Sciences2023，66，1： | 0 |
| 10 | The urban land area Change in China from 1820 to 1999显示文摘According to the length of city perimeter and the administration systems recorded in the historical literatures of the Qing Dynasty, a set of methods is developed to convert the historical records into the area of urban land use, by which a set of preliminary estimated urban land use data of the 18 provinces during the Emperor Jiaqing (1820AD) in the Qing Dynasty, is achieved. Based on the above achievements, the regional differences of urban land use are analyzed, and the comparison in urban land use between the Qing Dynasty and present (1999) is made. | HE Fanneng, GE Quansheng, ZHENG Jingyun(Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China) | 2002 | Journal of Geographical Sciences2002，12，4： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员