[1]孙尚华,刘建军*,康博文,等.综合治理下小流域景观格局变化的研究———以千阳县冉家沟为例[J].西北林学院学报,2008,23(03):62-65.
 SU N Shanghua,LI U Ji anjun,KAN G Bowen,et al.Anal ysi s o n Lands c ape Patt er n and Di ffere nti ati o n i n Small Wat ers he d———A Case St udy of Ranji agou Waters hed i n Qi anyang County[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2008,23(03):62-65.
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综合治理下小流域景观格局变化的研究———以千阳县冉家沟为例
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第23卷
期数:
2008年03期
页码:
62-65
栏目:
森林生物、生理、生态、植物、气象等
出版日期:
2008-05-30

文章信息/Info

Title:
Anal ysi s o n Lands c ape Patt er n and Di ffere nti ati o n i n Small Wat ers he d———A Case St udy of Ranji agou Waters hed i n Qi anyang County
文章编号:
1001—7461(2008)03—0062—04
作者:
孙尚华 刘建军* 康博文 黄 海 孙建华
西北农林科技大学林学院,陕西杨陵712100
Author(s):
SU N Shang—hua LI U Ji an—jun KAN G Bo—wen HU AN G Hai SU N Ji an—hua
College of Forestry,Northwest A&FUniversity,Yangling,Shaanxi 712100,China
关键词:
景观格局地理信息系统黄土高原
Keywords:
landscape pattern GISLoess Plateau
分类号:
S731.9
文献标志码:
A
摘要:
运用景观生态学理论,以千阳县冉家沟流域为例,选取斑块分维数、类斑形状指数、景观多样性指数、优势度指数、破碎度指数等指标对该流域近10a 的景观变化进行综合分析。结果表明:1999—2007年,冉家沟流域景观类型增加2个;耕地大面积减少,主要转化为幼林地、新造林地和人工草地;荒山荒地景观类型消失,几乎全部转化为新造林地,极小一部分转化为林地。整个流域的景观多样性和优势度指数增大,景观结构趋于简单化,总体生态环境得到明显改善。目前,该流域形成了以林地、新造林地为主的景观生态系统,人类活动的干预是该区景观空间格局变化的主要因素。

Abstract:
Based on t he t heory of landscape ,selecti ng i ndi ces s uch as average fractal di mensi on ,patch s hapei ndex ,di versity i ndex ,landscape do mi nance i ndex and frag mentati on i ndex ,changes of landscape patternof Ranji agou waters hed duri ng t he past 10years i n Qi anyang County were analyzed .The res ults s ho wedt hat t he total nu mber of patch i ncreased by 2fro m 1999to 2007;t he area of culti vated land decreased s harply ,most of t he land changed i nto young forest land ,ne w afforestati on fi eld and artifi ci al grassland ;t he landscape type of unculti vated land was di sappeared ,most of t he land changed i nto ne w afforestati on fi eld ,very fe wi nto forest land .In t he whole waters hed ,di versity i ndex and landscape do mi nance i ndex i ncreased ,t he landscape struct ure tended to be si mplifi ed ,and t he whole ecologi cal envi ron ment has been  i mproved si gnifi cantly .At present ,t he landscape ecos yste m was mai nly co mposed of forest and ne w afforestati on fi eld ,t he mai n dri vi ng factor for t he dyna mi c changes of s pati al pattern of landscape was hu manacti vity i n t hi s waters hed .

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备注/Memo

备注/Memo:
收稿日期:2007—09—28 修回日期:2007—12—03 基金项目:国家林业科技支撑计划“防护林体系空间配置与结构优化技术研究”(2006BAD03A0205) 作者简介:孙尚华(1981—),女,宁夏石嘴山人,在读硕士研究生,主要从事景观生态学研究。*通讯作者:刘建军(1962—),男,教授,主要从事森林生态系统研究。E—mail :ljj@nwsuaf.edu.cn。
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