县域森林破碎化评价是对生态建设的重点区域和森林植被发生变化的热点区域进行判读区划和测定分析。以云阳县为例,利用2002年森林资源调查数据,结合2006,2011年两期SPOT 5影像开展判读区划,对比分析3期森林分布数据,运用ArcGis 10.0和Fragstars 4.0软件,选取合适的景观格局指数,对云阳森林景观破碎化及其驱动力进行分析。结果表明全县森林破碎化程度明显减轻,局部区域小片林及林带多,森林破碎化严重;工程造林与社会政策是驱动云阳县森林景观破碎化减轻的关键因素,其中退耕还林工程造林贡献最大;农业活动与城镇建设是制约云阳县森林景观破碎化逆转的主要因素,应进一步加强林地保护管理,减少森林流失,建设健康稳定的森林生态系统。
The evaluation of forest fragmentation is interpretation and analysis division in key forest vegetation ecological construction area and hot spots of forest vegetation change.In this paper,the forest distribution data were derived from interpreting the SPOT5 images of 2006 and 2011 based on forest inventory data in 2002 in characterize the status of forest fragmentation and its driving forces since 2002 in Yunyang country,applying the packages of Arcgis10.0 and Fragstats 4.0.Diminishing of fragmentation status at county level is significant.On the contrary,negative trend exists in partial areas due to a number of small stands and narrow gallery forest.Project afforestation and social policies are the key driving forces to accelerate forest landscape fragmentation alleviation.On the contrary,obvious deforestation and land occupation for agricultural use and urban construction are direct deterrent factors of reversed forest landscape fragmentation in the study area.It is urgent to strengthen forestry land protection and management and reduce forest loss aiming at establishment of healthy and stable forest ecosystem in Yunyang country.
[1]Riitters K H,Wickham J D,Coulston J W.A preliminary assessment of Montreal process indicators of forest fragmentation for the United States[J].Environmental Monitoring and Assessment,2004,91:257-276.
[2]林媚珍,冯荣光,刘妍,等.南岭国家级自然保护区典型区域森林景观格局分析[J].林业资源管理,2014(5):86-91.
[3]Giulio M D,Holderegger R,Tobias S.Effects of habitat and landscape fragmentation on humans and biodiversity in densely populated landscapes[J].Journal of Environmental Management,2009,90(10):2959-2968.
[4]于泉洲,张祖陆,高宾,等.基于RS和FRAGSTATS的南四湖湿地景观格局演变研究[J].林业资源管理,2013(1):108-115.
[5]赵永华,贾夏,刘建朝,等.基于多源遥感数据的景观格局及预测研究[J].生态学报,2013,33(8):2556-2564.
[6]张煜星,严恩萍,夏朝宗,等.基于多源遥感的三峡库区森林景观破碎化演变研究[J].中南林业科技大学学报,2013,33(7):1-7.
[7]黄木易,岳文泽,杜娟.杭州市区土地利用景观格局演变及驱动力分析[J].土壤,2012,44(2):326-331.
[8]Giulio M D,Holderegger R,Tobias S.Effects of habitat and landscape fragmentation on humans and biodiversity in densely populated landscapes[J].Journal of Environmental Management,2009,90(10):2959-2968.
[9]Xia C Z,Zhang Y X,Wang W B.Afforestation parcels exact recognition based on fine remote sensing data for the conversion of cropland to forest project[J].IGARSS,2012:5971-5974.
[10]赵军.平原河网地区景观格局变化与多尺度环境响应研究[D].上海:华东师范大学,2008.
[11]Mc G K,Cushman S A,Neel M C,et al.FRAGSTATS:spatial pattern analysis program for categorical maps.computer software program produced by the authors at the University of Massachusetts,Amherst[EB/OL].[2010-3-31](2015-06-01).http://www.um ass.edu/landeco/research/fragstats/fragstats.html.
[12]张超,王妍,岳彩荣,等.香格里拉县森林景观格局多尺度效应分析[J].林业资源管理,2011(6):31-36.
[13]刘宝军,王荣女.基于GIS 的林地景观格局分析及栅格单元确定[J].西部林业科学,2011,40(1):76-79.
[14]张煜星.人工造林对森林覆盖率的贡献分[J].东北林业大学学报,2007,35(3):76-78.
[15]张煜星.中国森林资源1950—2003 年经营状况及问题[J].北京林业大学学报,2006,28(6):80-87.
[16]曾伟,熊彩云,肖复明,等.江西省针叶林生态系统服务功能价值动态分析[J].生态学杂志,2012,31(11):2907-2913.
[17]杨月圆.景观格局分析在自然保护区管理中的应用——以兰坪云岭省级自然保护区为例[J].林业资源管理,2013(5):131-136.
[18]Steininger M K,Tucker C J,Ersts P,et al.Clearance and fragmentation of tropical deciduous forest in the Tierras Bajas,Santa Cruz,Bolivia[J].Conservation Biology,2001,15(4):856-867.
[19]葛全胜,赵名茶,郑景云.20世纪中国土地利用变化研究[J].地理学报,2000,55(6):698-706.
[20]Ohman K.Creating Continuous Areas of Old Forest in Long-term Forest Planning[J].Canadian Journal of Forest Research,2000,30:1817-1823.
[21]常伟强,张岩,龙双红,等.基于Maplnfo的塞罕坝地区植被景观空间结构分析[J].林业资源管理,2011(4):109-116.
[22]姚玉璧,王毅荣,李耀辉,等.中国黄土高原气候暖干化及其对生态环境的影响[J].资源科学,2005,27(5):146-152.
[23]高俊峰,刘彦平.北京东灵山山地景观格局梯度变化研究[J].林业资源管理,2010(4):79-81.
[24]李明诗,刘图强,潘洁.森林破碎化的社会经济驱动力分析——以美国阿拉巴马州为例[J].东北林业大学学报,2010,38(6):57-59.
