21世纪初中国土地利用强度的空间分布格局

doi:10.11821/dlxb201607004

地理学报 ›› 2016, Vol. 71 ›› Issue (7): 1130-1143.doi: 10.11821/dlxb201607004

21世纪初中国土地利用强度的空间分布格局

刘芳¹(), 闫慧敏¹(), 刘纪远¹, 肖向明^2,³, 秦元伟²

1. 中国科学院地理科学与资源研究所,北京 100101
2. 美国俄克拉荷马大学微生物与植物生物系空间分析中心,俄克拉荷马诺曼 73019
3. 复旦大学生物多样性科学研究所,上海 200433

收稿日期:2015-11-08 修回日期:2016-04-11 出版日期:2016-07-25 发布日期:2016-07-25
作者简介:
作者简介：刘芳(1984-), 女, 河北石家庄人, 博士, 主要从事土地利用变化及其生态环境效应研究。E-mail:fangliu2015@gmail.com
基金资助:
国家自然科学基金重点项目(41430861);中国科学院科技服务网络计划(KFJ-EW-STS-019)

Spatial pattern of land use intensity in China in 2000

Fang LIU¹(), Huimin YAN¹(), Jiyuan LIU¹, Xiangming XIAO^2,³, Yuanwei QIN²

1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
2. Department of Microbiology and Plant Biology, Center for Spatial Analysis, University of Oklahoma, Norman 73019, Oklahoma, USA
3.Institute of Biodiversity Science, Fudan University, Shanghai 200433, China

Received:2015-11-08 Revised:2016-04-11 Published:2016-07-25 Online:2016-07-25
Supported by:
Key Project of National Natural Science Foundation of China, No.41430861;Science and Technology Service Network Initiative, No.KFJ-EW-STS-019]

摘要/Abstract

摘要：

土地利用强度直接反映了人类活动对自然生态系统的影响程度,成为全球环境变化的重要驱动力,也是土地利用可持续程度的重要测度指标。当前土地科学研究主要关注土地覆被变化及其对生态环境的影响,而土地利用强度的高分辨率时空表达尚在探索阶段。本文基于土地利用栅格成分数据、遥感数据、社会经济数据等空间化指标要素,根据地表被人类活动干扰程度及其可逆性分为人工地类、半人工地类、半天然地类、天然地类4个一级类型;依据耕作强度、人口密度等人类活动强度指标分为22个二级类型,获得空间分辨率为1 km的中国土地利用强度图。21世纪初全国人工地类、半人工地类、半天然地类和天然地类的面积比例分别为0.71%、19.36%、58.93%和21%,人口分布密集的东南部土地利用强度类型多样,且整体高于人口稀疏的西北部;随着经度的增加,土地利用强度类型由以天然地类和半天然地类为主转变为半天然地类和半人工地类为主;东部省市区土地利用强度高于中、西部,西部省市区土地利用强度最低;土地利用强度类型呈区域性集聚分布。与已有研究相比,该研究有效刻画了中国土地利用强度的空间异质性,有助于深入理解人类与自然生态系统的交互格局及其生态环境效应,为可持续土地利用政策的制定提供科学依据。

关键词: 土地利用强度, 分类系统, 空间分异, 可持续性, 中国

Abstract:

In this paper, according to the intensity of human impacts, a national hierarchical land use intensity classification system was designed based on comprehensive and high-resolution spatial datasets. According to the degree and reversibility of surface disturbance by human activities, we obtained data for four main groups of artificial land, semi-artificial land, semi-natural land and natural land, which were further divided into 22 classes based on indicators such as human population density, and cropping intensity. Land use intensity in China with a 1-km spatial resolution was obtained. The area proportions of artificial land, semi-artificial land, semi-natural land and natural land were 0.71%, 19.36%, 58.93% and 21%, respectively. Besides, significant spatial variability was demonstrated at national, regional and provincial levels. The southeastern region with denser population had more classes of land use intensity and was more intensive than the northwestern region with sparse population. With the increase of longitude, a transition in dominated land use intensity type was detected from natural and semi-natural land to semi-natural and semi-artificial land. The land use intensity in provinces of eastern China was the highest, followed by those in central and western regions. The land use intensity types showed a remarkable spatial differentiation of clustered distribution. Compared with the previous studies, our research effectively characterizes the spatial heterogeneity of land use intensity, which can help us to get a better understanding of spatial pattern of human-environment interactions and its eco-environmental impacts, which can provide scientific basis for sustainable land use policies.

Key words: land use intensity, classification system, spatial differentiation, sustainability, China

刘芳, 闫慧敏, 刘纪远, 肖向明, 秦元伟. 21世纪初中国土地利用强度的空间分布格局[J]. 地理学报, 2016, 71(7): 1130-1143.

Fang LIU, Huimin YAN, Jiyuan LIU, Xiangming XIAO, Yuanwei QIN. Spatial pattern of land use intensity in China in 2000[J]. Acta Geographica Sinica, 2016, 71(7): 1130-1143.

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一级类	二级类	描述
人工地类	城市	城市分布集中区,人口集中
人工地类	村庄和工矿用地	农村居民点和工矿用地,人口数量多但景观相对破碎化
半人工地类(耕地)	三季水田	三季种植的水田
	二季水田	两季种植的水田
	一季水田	一季种植的水田
	三季灌溉	三季种植的灌溉旱地
	二季灌溉	两季种植的灌溉旱地
	一季灌溉	一季种植的灌溉旱地
	三季雨养	三季种植的雨养旱地
	二季雨养	两季种植的雨养旱地
	一季雨养	一季种植的雨养旱地
	休耕地	闲置起来以备播种的可耕地
半天然地类 (林地、草地和水域)	高强度利用林地	人口分布较密集(> 100人/km²)
	低强度利用林地	人口分布较稀疏(1~100人/km²)
	自然林地	人口分布极为稀少(< 1人/km²)
	高强度利用草地	牲畜分布较密集(> 10 TLU/km²)
	低强度利用草地	牲畜分布较稀疏(1~10 TLU /km²)
	自然草地	牲畜分布极为稀少(< 1 TLU /km²)
	高强度利用水域	人口分布较密集(> 100人/km²)的县域内的水域
	低强度利用水域	人口分布较稀疏(1~100人/km²)的县域内的水域
	自然水域	人口分布极为稀少(< 1人/km²)的县域内的水域
天然地类(未利用地)	未利用地	沙地、戈壁、盐碱地、沼泽、裸土地和裸岩石砾地

分区	人工地类(%)	半人工地类(%)	半天然地类(%)	天然地类(%)
东北区	13.20	17.88	10.12	2.20
内蒙及长城沿线区	5.42	8.74	10.22	2.87
黄淮海区	35.57	19.22	1.09	0.11
黄土高原区	5.10	8.81	4.23	0.07
长江中下游区	15.98	18.81	10.80	0.10
西南区	4.64	14.65	12.99	0.03
华南区	13.62	6.15	6.56	0.02
甘新区	5.78	5.07	12.89	70.93
青藏区	0.70	0.66	31.09	23.67

21世纪初中国土地利用强度的空间分布格局

Spatial pattern of land use intensity in China in 2000

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