| 退耕还林对牡丹江区域生态环境脆弱性的影响研究 |
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| 引用本文： | 高凤杰,张柏,王宗明,雷国平,宋开山,任春颖,宋戈,宁静.退耕还林对牡丹江区域生态环境脆弱性的影响研究[J].地球信息科学,2010,12(3):322-328. |
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| 作者姓名： | 高凤杰 张柏 王宗明 雷国平 宋开山 任春颖 宋戈 宁静 |
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| 作者单位： | 1. 中国科学院东北地理与农业生态研究所, 长春 130012;
2. 中国科学院研究生院, 北京 100049;
3. 东北农业大学资源与环境学院, 哈尔滨 150030 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目（KZCX2-YW-341）; 国家自然基金项目（40901267 40930527）; 黑龙江省教育厅2009年度青年学术骨干项目（1154G45） |
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| 摘 要： | 从脆弱生态系统的特征入手,选取景观分离度、分维数倒数、破碎度3个反映景观稳定性及抗干扰能力的景观格局指数,并结合土壤侵蚀强度构成区域生态环境脆弱性的敏感因子,针对研究区地形,以景观生态适宜度作为生态系统自我恢复能力的表征,构建了牡丹江区域生态环境脆弱度评价模型。评价结果表明:（1）退耕还林前后景观类型脆弱度均表现为旱田>建设用地>水田>林地>未利用土地>水域>沼泽>草地;（2）研究区生态脆弱度表现为以脆弱度高值区为中心呈环状向四周递减的趋势,脆弱度高值区面积比重由退耕前的21.57%减小到退耕后的17.11%,脆弱度低值区面积比重由退耕前的63.14%增加到退耕后的67.66%;（3）生态脆弱度高值区域主要分布在200~400m的海拔高度,0~8°的坡度范围内,且退耕后面积比例呈下降趋势,而低值区域则分布在>300m海拔高度的各个坡度范围内,且退耕后面积比例呈上升态势。研究结果符合研究区实际状况。概言之,退耕还林缓和了研究区生态脆弱度状况,促进了生态环境质量向良好方向发展。
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| 关 键 词： | 脆弱性 评价模型 3S技术 退耕还林 牡丹江 |
| 收稿时间： | 2010-01-20; |
Effects of Grain for Green Project on the Eco-Environmental Vulnerability of Mudanjiang Region,Heilongjiang Province |
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| GAO Fengjie,WANG Zongming,SONG Kaishan,REN Chunying,SONG Ge,NING Jing.Effects of Grain for Green Project on the Eco-Environmental Vulnerability of Mudanjiang Region,Heilongjiang Province[J].Geo-information Science,2010,12(3):322-328. |
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| Authors: | GAO Fengjie WANG Zongming SONG Kaishan REN Chunying SONG Ge NING Jing |
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| Institution: | 1. Northeast Institute of Geography and Agroecology,CAS,Changchun 130012,China;
2. Graduate University of Chinese Academy of Sciences,Beijing 100049,China;
3. Northeast Agricultural University,Harbin 150030,China |
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| Abstract: | Starting at analyzing the characteristics of vulnerable ecological system,this paper firstly selected 3 landscape indexes（FI,FD and FN） and 1 eco-environment index of erosion to make up the eco-environment sensitive factors;secondly,it chose ecological suitability as its automatic recovery ability.Thus it built up an Eco-Environment Vulnerability Assessment Model which was used to evaluate the effects of Grain for Green Project（GGP） on the Eco-Environment of Mudanjiang Region,Heilongjiang Province.In the processing,we divided the study area into 463 grids of 10km×10km by the fishnet command in ArcGIS to make the assessment results more intuitively.Calculating the eco-environmental vulnerability of every grid and assigning the value to the center point,we accomplished the value spatialization by Kriging interplating method.The results show that：①No matter before or after the GGP,the landscape vulnerability value from high to low is that：dry farmlandbuilding〉paddy field〉forest〉unused land〉water〉swamp〉grass;②Horizontally,the eco-environmental vulnerability in Mudanjiang Region declines from the high center to low edge circularly;after the GGP,the area proportion of higher vulnerability zone decreases from 21.57% to 17.11% while the lower increases from 63.14% to 67.66%;③Vertically,the extremely vulnerable zone V and vulnerable zone IV separately exist in 200-400m and 100-600m elevation ranges,0-8° and 0-35° slope range,and their area proportions decrease after the GGP;the weak vulnerable zone II and the good eco-environmental zone I exist in 〉100m elevation ranges,separately in 0-35° slope ranges and every slope range,and their area proportions increase;the general vulnerable zone III belongs to the transitional zone and its changes appears little regular compared to the two formers.In a word,the model suits to the study area and the results show that the GGP relieved the vulnerability in Mudanjiang Region and promoted the environmental quality there. |
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| Keywords: | eco-environmental vulnerability assessment model Grain for Green Project Mudanjiang Region |
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