|Table of Contents|

Landscape Ecological Risk Assessment and Ecological Restoration Zoning of Cultivated Land in Inner Mongolia, China(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2023年第04期
Page:
895-906
Research Field:
环境与可持续发展专刊
Publishing date:

Info

Title:
Landscape Ecological Risk Assessment and Ecological Restoration Zoning of Cultivated Land in Inner Mongolia, China
Author(s):
SHU Han-jun1;  FAN Shun-xiang1;  JIANG Ya-dong2;  WANG Li-qun3;  LI Jing-wei1;  YU Zhen-rong1;  LIU Yun-hui1*
(1. College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; 2. Inner Mongolia Geological Survey Institute, Huhhot 010020, Inner Mongolia, China; 3. Hulun Buir Natural Resources Bureau, Hulun Buir 021199, Inner Mongolia, China)
Keywords:
landscape pattern;  ecological risk;  cultivated land;  spatial principal component analysis;  hot spot;  cold spot;  ecological restoration;  Inner Mongolia
PACS:
X171.4; F301.21
DOI:
-
Abstract:
Diagnosing and identifying the ecological risks of cultivated land is a critical prerequisite for carrying out ecological restoration and ensuring ecological security of cultivated land. The influence factors of landscape ecological risk of cultivated land in Inner Mongolia were quantified by multi-dimensional perspective of “nature-society-landscape”, the comprehensive landscape ecological risk of cultivated land was evaluated using spatial principal component analysis(SPCA), and the weight of each impact factor was quantified; based on evaluation results, the spatial aggregation characteristics of ecological risks, which was later used to identify the key areas of ecological restoration, were identified, and the restoration countermeasure was put forward. The results show that ① the landscape ecological risk of cultivated land in Inner Mongolia is driven by multiple factors, cultivated landscape fragmentation, mining pollution, water resources stress and poor habitat quality are the major ecological risks. ② The ecological risk is lower at the region, where the distribution of cultivated land is concentrated and the cultivated land patches are large and unbroken, or along the river; conversely, the ecological risk is higher at the region, where the cultivated land is scattered and the cultivated land patches are small or at the edge of the large area patches. ③ There is a significant spatial aggregation of landscape ecological risks of cultivated land in Inner Mongolia with cold spot areas distributing at Nenjiang River Basin, Xiliaohe River Basin, Hetao Plain and Tumochuan Plain, while the hot spot areas distributing at the south of Inner Mongolia. The hot spot areas are diagnosed as the key ecological restoration zones, where ecological restoration projects, including remediating farmland fragmentation, constructing farmland ecological infrastructure, constructing water-saving irrigation infrastructure, and returning farmland to forest or grassland, are recommended; the cold spot areas are diagnosed as agricultural development zones, where is suggested to develop green agriculture and promote the combination of planting and farming; other areas are diagnosed as farmland conservation areas, where is recommended to strengthen the construction of farmland ecological infrastructure and expand the vegetation coverage in agricultural space.

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Last Update: 2023-06-20