首页 | 本学科首页   官方微博 | 高级检索  
     检索      

基于InVEST模型评估土地整治对生境质量的影响
引用本文:钟莉娜,王军.基于InVEST模型评估土地整治对生境质量的影响[J].农业工程学报,2017,33(1):250-255.
作者姓名:钟莉娜  王军
作者单位:1. 中国地质大学(北京)土地科学技术学院,北京100083;国土资源部土地整治中心土地整治重点实验室,北京100035;2. 国土资源部土地整治中心土地整治重点实验室,北京,100035
基金项目:国家自然科学基金(41171152)
摘    要:土地整治通过对土地资源及其利用方式再组织和再优化影响生境斑块之间物质流、能量流的循环过程,从而改变区域生境质量和分布格局。该文以大安市土地整治重大项目为例,采用InVEST模型分析了土地整治对生境质量的影响。研究表明:1)土地整治前(2008年)、整治中(2011年)、整治后(2014年),耕地、草地和盐碱地均为项目区的主要土地利用类型;2)土地整治后,大量的盐碱地和草地转变为耕地,耕地面积由整治前的14.43%上升到71.19%;3)土地整治中,项目区的生境质量得分由整治前的0.194下降到0.189,整治后又上升到0.214;4)土地整治工程改善了项目区的生境质量,但整治完成后生境质量改善效果经历了先下降后上升的过程,在整治完成3~4 a时,生境质量仅比整治前提高了0.06左右,整治完成4 a之后,生境质量开始逐渐好转。研究结果可为土地整治工作中的生境及生物多样性保护工作提供科学依据。

关 键 词:土地利用  模型  土地整治  生境质量  影响  InVEST模型
收稿时间:6/2/2016 12:00:00 AM
修稿时间:2016/10/18 0:00:00

Evaluation on effect of land consolidation on habitat quality based on InVEST model
Zhong Lina and Wang Jun.Evaluation on effect of land consolidation on habitat quality based on InVEST model[J].Transactions of the Chinese Society of Agricultural Engineering,2017,33(1):250-255.
Authors:Zhong Lina and Wang Jun
Institution:1. School of Land Science and Technology, China University of Geosciences, Beijing 100083, China; 2. Key Laboratory of Land Consolidation and Rehabilitation, Ministry of Land and Resources, Beijing 100035, China; and 2. Key Laboratory of Land Consolidation and Rehabilitation, Ministry of Land and Resources, Beijing 100035, China;
Abstract:Abstract: Land consolidation is a process of re-organization and re-optimization of land resource and its utilization. The change of land resource and its utilization has a profound influence on the circulation process of material flow and energy flow between habitat patches, thus changing the quality and distribution pattern of the regional habitat. Da''an City is located in the Songnen Plain, which is flat, and rich in cultivated land reserve resources and water resources, and is one of the most potential areas of agricultural development in China. This paper took the land consolidation major project area of Da''an City as an example, and analyzed the influence of land consolidation on habitat quality based on the model of InVEST (integrated valuation of ecosystem services and tradeoffs). The data used in the study was the 1:10000 land use map of the land consolidation project area in 2008, 2011 and 2014, which represented the time before, during and after the land consolidation. Based on the ArcGIS 10.0 software, the land use vector data were output as the raster data of 30 m × 30 m, which were used as the evaluation unit of the habitat quality of the project area. The results showed that: 1) Cultivated land, saline alkali land and grassland were the main land use types in the project area. After land consolidation, a large amount of saline alkali land was converted into arable land, and the proportion of arable land area in the total area of the project increased from 14.43% to 71.19%. The degree of landscape fragmentation was significantly decreased after land consolidation. 2) The overall habitat quality of Da''an land consolidation project area was poor. The area of which the habitat quality score was between 0 and 0.1 accounted for 54.62%-72.03% of the land consolidation project area. The main reason for this phenomenon was that for the land use types whose habitat quality was higher, such as woodland and grassland, their areas were small and the distributions were dispersed; the areas of cultivated land and saline alkali land were larger, but the habitat quality of the 2 kinds of land use types was lower. 3) Before land consolidation, the score of habitat quality was 0.194; the score of habitat quality was reduced to 0.189 during land consolidation, and was increased to 0.214 after land consolidation. Before, during and after the land consolidation, the habitat quality showed a trend of first decreasing and then increasing. Saline alkali land is one of the threat factors of habitat quality, and its area in the former project area was large, which has a negative impact on the quality of the whole project area. The disturbance of human during the land consolidation project has reduced the habitat quality of the project area. After land consolidation, the score of habitat quality was increased to 0.214. The main reason was that the land use pattern has been optimized owing to land consolidation. At the same time, a large increase in arable land has made the grain production capacity of the project area increase significantly. 4) Overall, the land consolidation project has improved the habitat quality of the project area, but the habitat quality score has experienced a process of first decrease and then increase. In the 3-4 years after land consolidation, the quality of the habitat was the lowest since land consolidation completed, and it was only 0.06 higher than that before land consolidation. And then the quality of the habitat began to improve gradually. After land consolidation, there would be a small amount of arable land changed to saline land again, so the habitat quality of the project area decreased. However, the maintenance work would improve these saline alkali land and change them to arable land, so the quality of the habitat would rise again.
Keywords:land use  models  land consolidation  habitat quality  effect  InVEST model
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《农业工程学报》浏览原始摘要信息
点击此处可从《农业工程学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号