Carbon sequestration effects of shrublands in Three-North Shelterbelt Forest region,China   总被引：5，自引：1，他引：4  

Wenhui Liu  Jiaojun Zhu  Quanquan Jia  Xiao Zheng  Junsheng Li  Xuedong Lou  Lile Hu 《中国地理科学(英文版)》2014,24(4):444-453

Three-North Shelterbelt Forest(TSF) program, is one of six key forestry programs and has a 73-year construction period, from 1978 to 2050. Quantitative analysis of the carbon sequestration of shrubs in this region is important for understanding the overall function of carbon sequestration of the forest and other terrestrial ecosystems in China. This study investigated the distribution area of shrubland in the TSF region based on remote sensing images in 1978 and 2008, and calculated the carbon density of shrubland in combination with the field investigation and previous data from published papers. The carbon sequestration quantity and rate from 1978 to 2008 was analyzed for four sub-regions and different types of shrubs in the TSF region. The results revealed that: 1) The area of shrubland in the study area and its four sub-regions increased during the past thirty years. The area of shrubland for the whole region in 2008 was 1.2 × 10~7 ha, 72.8% larger than that in 1978. The Inner Mongolia-Xinjiang Sub-region was the largest shrubland distribution area, while the highest coverage rate was found in the North China Sub-region. 2) In decreasing order of their carbon sequestration, the four types of shrubs considered in this study were Hippophae rhamnoides, Caragana spp., Haloxylon ammodendron and Vitex negundo var. heterophylla. The carbon sequestration of H. rhamnoides, with a maximum mean carbon density of 16.5 Mg C/ha, was significantly higher than that of the other three species. 3) The total carbon sequestration of shrubland in the study region was 4.5×10~7 Mg C with a mean annual carbon sequestration of 1.5 ×10~6 Mg C. The carbon density in the four sub-regions decreased in the following order: the Loess Plateau Sub-region, the North China Sub-region, the Northeast China Sub-region and the Inner Mongolia-Xinjiang Sub-region. The paucity of studies and data availability on the large-scale carbon sequestration of shrub species suggests this study provides a baseline reference for future research in this area.  相似文献   

中国进士之乡——福建省邵武市和平镇     

泓彦 《华北国土资源》2014,(3):38-39

正和平镇位于福建省邵武市西南部,全镇总面积192平方公里,耕地面积30239.7亩,林地面积14.81亩,全镇烤烟近5000亩,茶叶面积6500亩。镇内交通便利,省道、高速公路引线途经镇区,与高速互通口仅隔2公里,距武夷山机场2个小时的路程。素有"长兴南大门"之称的和平镇,东连湖州,西接安吉,北临西苕溪,南倚天目山脉,中贯省道鹿唐线,水陆交通十分便利。古镇建置始于唐朝,保存着近300幢明清时代的古建筑,是福建省历史最悠久的古镇之一。古镇建筑格局为全  相似文献   

浅谈非法占用林地案件应该如何查处     

张国奇 《黑龙江国土资源》2014,(8):58-59

近些年,随着经济建设的快速发展,非法占用林地的案件大量攀升。在查处这类案件过程中,要牵涉到《中华人民共和国森林法》（以下简称《森林法》）,《中华人民共和国土地管理法》（以下简称《土地管理法》）这两部法律和相应法规。  相似文献   

基于ArcEngine的林地图斑拓扑查错研究     

陈晟  ;胡进刚  ;谭莹  ;张瑜飞 《测绘信息与工程》2014,(5):62-64

针对森林资源二类调查内业流程,利用空间拓扑分析,解决图斑面属性赋值的难题,并且分析其一一对应关系,记录查错信息。在VB编程环境下,采用ArcEngine组件库,提出林地图斑拓扑查错算法流程,按照空间包含关系,将属性点记录的属性信息一一赋值到满足条件的图斑面内,自动获取包含属性信息的林地图斑面数据。  相似文献   

地理国情普查地表覆盖林地信息人工解译技术方法探讨     

李英利  闫会杰  苟卫涛  丁国丽 《测绘标准化》2014,(1):4-6

高分辨率遥感影像是进行地理国情普查的底图数据,如何在高分辨率影像上准确地解译地理信息数据对测绘技术发展具有重要意义。介绍地理国情普查项目地表覆盖林地分类中乔木林、灌木林、乔灌混合林、疏林、绿化林地、人工幼林、稀疏灌丛等林地信息的人工解译方法和技巧,通过遥感影像纹理特征的判别为以后同类地表分类的解译提供参考。  相似文献   

基于北京二号与地理国情数据的林地提取     

杜林丹  董春  赵荣  张玉  亢晓琛 《测绘通报》2023,(1):39-44

由于地理国情林地数据不包含实地面积小于400 m²的树木或四旁单排林,若仅利用地理国情的林地数据统计区域森林覆盖率,将对四旁树面积较大地区的林地统计结果产生较大误差。为提取区域内准确的林地覆盖与空间分布状况,本文借助地理国情地表覆盖数据,提出了一种基于北京二号高分辨率遥感影像的林地提取方法。首先,根据遥感影像光谱特征,将研究区按植被、道路、铁路、建筑用地进行地类划分,并基于遥感影像进行各地类的样本提取,通过可分离检验的样本利用最大似然分类提取研究区内植被覆盖范围;然后,借助地理国情地表覆盖数据,使用叠置分析剔除误分、错分地类,得到区域林地的空间分布。试验结果表明：(1)研究区内林地覆盖率为20.3%,尚未满足北京新一轮林地规划需求;(2)地理国情地表覆盖数据内林地面积占提取林地总面积的54.03%,说明在部分地区使用本文方法对地理国情林地数据进行补充是有必要的。通过将试验结果与遥感影像进行目视比对并结合外业调查结果发现,提取的林地空间分布情况与实际分布基本相符。本文为地理国情的应用提供了一种新方法,研究结果可辅助区域的绿色发展规划,有助于构建科学的生态空间格局。  相似文献