中国科学院机构知识库网格系统: 检索

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	Spatial variation and influencing factors of the effectiveness of afforestation in China's Loess Plateau 期刊论文 OAI收割 SCIENCE OF THE TOTAL ENVIRONMENT, 2021, 卷号: 771, 页码: - 作者: Wu, Xutong; Wang, Shuai; Fu, Bojie; Liu, Jianguo \| 收藏 \| 浏览/下载：34/0 \| 提交时间：2021/12/21 Payment for ecosystem services Ecological restoration Metacoupling Grain-to-Green Program Loess Plateau
	基于多主体模型的典型区域退耕还林工程实施空间模拟期刊论文 OAI收割地理学报, 2020, 卷号: 75, 期号: 9, 页码: 1983 作者: 杨微石; 戴尔阜; 郑度; 董玉祥; 尹乐 \| 收藏 \| 浏览/下载：25/0 \| 提交时间：2021/03/16 Grain to Green Program agent-based model land use Tongdu Town mountainous areas 退耕还林工程多主体模型土地利用铜都镇山地
	黄土高原植被覆盖变化的影响因素与生态系统服务效应学位论文 OAI收割北京: 中国科学院生态环境研究中心, 2018 作者: 张琨 \| 收藏 \| 浏览/下载：39/0 \| 提交时间：2019/07/31 植被覆盖度,生态恢复,退耕还林（草）工程, 生态系统服务, 黄土高原 Vegetation Coverage, Ecological ResToration, Grain To Green Program, Ecosystem Service, The Loess Plateau
	面向管理的生态系统服务集成与优化学位论文 OAI收割博士后, 北京: 中国科学院研究生院, 2013 胡海棠收藏 \| 浏览/下载：138/0 \| 提交时间：2014/08/19 生态系统服务生态系统管理多目标优化退耕还林 ecosystem service ecosystem management multi-objective optimization Grain to Green Program
	Land use dynamics and landscape change pattern in Hetao irrigation district, Inner Mongolia, China 会议论文 OAI收割 6th International Symposium on Digital Earth: Data Processing and Applications, Beijing, China, September 9, 2009 - September 12,2009 Zhang, Yinhui; Luo, Yi; Zhao, Wenwu 收藏 \| 浏览/下载：27/0 \| 提交时间：2014/12/07 This study analyzed spatial and temporal changes in land use in an irrigation district covering an area of 1.7 million ha in Northern China by GIS analyses and also investigated changes in landscape pattern using the landscape structure analysis program FRAGSTATS over the study period from 1986 to 2000. The decreases in farmland and the increases in grassland area mainly resulted from the policy of grain for green and converting slope farmland into pasture from China government. In spite of the efforts to conserve the fragile ecosystem the land degradation including soil salinization and grassland degradation was spreading rapidly. The area of alkali-saline land increased by 22493 ha and about 50555 ha of dense grassland degraded into mid-density grassland. In terms of landscape fragmentation both farmland and dense grassland showed the tendency of increased fragmentation. Both adverse natural conditions and human activities are responsible for the land degradation expansion in Hetao irrigation district but the root causes are increasing population pressure and irrational human activities such as flooding irrigation method and over-grazing. To prevent land degradation from spreading population control and improvement of the management are prerequisite approaches. 2010 SPIE.
	Factors affecting land reconversion plans following a payment for ecosystem service program 期刊论文 OAI收割 BIOLOGICAL CONSERVATION, 2009, 卷号: 142, 期号: 8, 页码: 1740-1747 Chen, Xiaodong; Lupi, Frank; He, Guangming; Ouyang, Zhiyun; Liu, Jianguo 收藏 \| 浏览/下载：26/0 \| 提交时间：2015/08/07 China Grain-to-Green Program Post-program land use Sustainability Tobit Wolong Nature Reserve