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| 白洋淀流域景观空间格局变化研究 | |
| 引用本文： | 张明阳,王克林,何萍,高吉喜,谢志仁.白洋淀流域景观空间格局变化研究[J].资源科学,2005,27(2):134-140. |
| 作者姓名： | 张明阳 王克林 何萍 高吉喜 谢志仁 |
| 作者单位： | 1. 中国科学院亚热带农业生态研究所,长沙,410125 2. 中国环境科学研究院区域生态研究所,北京,100012 3. 南京师范大学地理科学学院,南京,210097 |
| 基金项目： | 中国科学院知识创新工程项目,中国环境保护总局中意合作项目 |
| 摘 要： | 通过GIS技术和景观结构分析软件FRAGSTATS对白洋淀流域1986年和2000年景观格局的对比分析,哪结果表明:①在景观尺度上,研究区景观破碎化程度下降,斑块形状更加简单规则,斑块类型分布更加离散,空间连接性减小,多样性和均匀度增加;②在景观要素类型尺度上,耕地面积减少,并且更加破碎,形状更加复杂,而与此相对的是城乡工矿居民用地面积增加,形状规则;尽管林地面积的增加主要来自草地的转化,但是林地和草地的破碎化程度、斑块形状和连通性等指标变化趋势基本一致;水域面积减小,形状变得规则且斑块集中;③林牧和农牧交错带的景观格局变化非常明显,说明了其景观生态比较脆弱和易变;④人类活动对白洋淀流域的干扰主要集中在东部旱地区,同时西部山区的封山育林和退耕还林还草等生态建设措施取得了一定的成效. |
| 关 键 词： | 白洋淀流域 景观格局 变化 |
| 文章编号： | 1007-7588(2005)02-0134-07 |
| 修稿时间： | 2004年4月10日 |
Spatial Changes of Landscape Patterns in Baiyangdian River Basin |
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| ZHANG Ming-yang,WANG Ke-lin,HE Ping,GAO Ji-xi,XIE Zhi-ren.Spatial Changes of Landscape Patterns in Baiyangdian River Basin[J].Resources Science,2005,27(2):134-140. | |
| Authors: | ZHANG Ming-yang WANG Ke-lin HE Ping GAO Ji-xi XIE Zhi-ren |
| Abstract: | Based on land use and land cover data, the landscape has been classified into six types; and then the changes of landscape patterns in Baiyangdian Basin have been studied from 1986 to 2000 using GIS and FRAGSTATS. According to the results, the driving mechanism has been analyzed and the countermeasures have been proposed. The results show: 1) At the landscape level, the fragmentation of landscape decreases with a decrease in patch number from (9 571) to (10 378). The density of patch edge is 20.54 and 89.09 respectively, which leads to the shape of patches more regular; and the index of landscape shape changed from 20.54 to 21.84, which results in the patch types more aggregative; and the assembled index are 82.98 and 89.09 respectively; spatial connectedness is decreasing, the patch area change variability is (4 029.78) and (4 881.93) respectively, both the diversity and evenness are increasing and more relying on water resources; the density index are 1.35 and 1.25 respectively, and the equality index are 0.75 and 0.64 respectively; 2) At patch level, cultivated land becomes more fragmented, along with the area decreasing from (9 689.53)km~2 to (8 827.84)km~2 and patch shape become more irregular. Reversely, residential area is increasing from (1 206.18)km~2 to (1619.49)km~2, which has increased by 34.7 percent, and the shape tends to be more regular. Though the increased forests have come from the conversion of grassland, the fragmentation, patch shape and the connectedness of the forests and grasslands have similar change trends. The water body is decreasing from 656.78km~2 to 523.35km~2, and its patch shape becomes more regular and patches more aggregative; 3) Changes of landscape in ecotone between agriculture and animal husbandry or between forest and animal husbandry are obvious, which represents ecotone is more vulnerable than others; 4) The disturbance coming from human activities are focused on dry land in the East. Moreover, the ecological construction policy of"closing hill for afforestation" and "returning farmland to forest land and grassland" in the West mountain area has taken effect. |
| Keywords: | FRAGSTATS |
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