Editor-in-Chief: Song Wei

Associate Editor: Han Ze, Liu Yaqun, Lang Yanqing, Li Huanhuan

About the Author

Associate Professor Song Wei has long been engaged in research related to land use change science. His specific research directions mainly include land use change detection, land use change modeling and simulation, land use policy, ecological effects of land use change, land consolidation, land use planning, etc. He has presided over a number of scientific research projects including the National Natural Science Foundation of China, the STS Project of the Academy of Sciences, the 973 Program, and the Ministry of Land and Resources' public welfare industry special topic. He has published more than 100 papers in academic journals at home and abroad, of which the first/corresponding author has published more than 60 SCI/SSCI papers. As the first/corresponding author, 3 of his papers were selected as ESI highly cited papers, and the other 1 was selected as the 2014-2018 Most Cited paper by Ecological Modelling.

He has published 1 monograph in Chinese. He also participated in the compilation of 4 books in Chinese and English, including The Geographical Sciences During 1986- -2015: From the Classics to the Frontiers edited by the National Natural Science Foundation of China (participated in the compilation of the land change part), and the second land survey manuscript. China's Land Resources and Utilization edited by the Ministry of Land and Resources (participating in the compilation of regional chapters).

He has successively won 5 provincial and ministerial awards, including 4 provincial and ministerial second prizes from the former Ministry of Land and Resources and the former State Bureau of Surveying and Mapping (1 for the first finisher) and 1 third prize. He also won the 14th National Youth Geographic Technology Award. He has obtained 9 software copyrights.

The Master Plan for National Major Ecosystem Protection and Restoration Projects (2021-2035), which he participated in the compilation, was approved by the Central Comprehensive Deepening Reform. Commission and jointly promulgated by the National Development and Reform. Commission and the Ministry of Natural Resources. The Special Plan for Ecological Environmental Protection Restoration of the Grand Canal, which he participated in the compilation, was jointly issued by the Ministry of Ecology and Environment, the Ministry of Natural Resources, the National Development and Reform. Commission, and the National Forestry and Grassland Administration.

He participated in the writing of the consultation reports Experts of the Chinese Academy of Sciences on the Risks and Countermeasures of the Quality of my country's Cultivated Land - Based on the Perspective of Cultivated Land Migration to the Northwest and Analysis and Suggestions on the Impact of Non-agricultural and Non-Grain of Cultivated Land on National Food Security, which were approved by the Central Office.

Abstract

China is one of the countries in the world with the largest distribution of ecologically vulnerable areas, the largest number of vulnerable ecological types, and the most obvious manifestations of ecological vulnerability. Ecological protection in ecologically vulnerable areas is the bottom line and lifeline for ensuring and maintaining national ecological security. However, under the combined influence of human unreasonable land use activities and climate change, China's ecologically vulnerable areas are faced with practical problems such as vegetation destruction, soil erosion, soil erosion, and water shortage. A comprehensive understanding of land use changes and the ecological effects in ecologically vulnerable areas is an important basis for optimizing the layout of land use structures and strengthening ecological protection in ecologically vulnerable areas.

With the rapid development of social economy, the scarcity of land resources in ecologically vulnerable areas has become increasingly apparent. The imbalance of land use structure aggravates the ecological environment degradation in ecologically vulnerable areas, and aggravates the contradiction between man and land. Land use change in ecologically vulnerable areas not only changes the landscape pattern, but also affects the material cycle and energy flow in the ecosystem. The above phenomena have profound impacts on regional biodiversity and important ecological processes. To this end, the research team took three typical ecologically vulnerable areas in the Three River Source area, the karst mountain area and the Heihe River Basin as the research areas, and carried out research on regional land use change and its ecological effects. The team summed up the relevant research results and completed the book Land Use Change and Its Ecological Effects in Ecologically Vulnerable Areas. The core goal of this book is to reveal the law of land use change in different typical ecologically vulnerable regions and its impact mechanism on the ecological environment, which provides a scientific basis for regional ecological environmental protection and sustainable development.

This book consists of seven chapters. The first chapter is the research background and significance, mainly defining the basic concept and scope of ecologically vulnerable areas, and pointing out the main ecological problems faced by ecologically vulnerable areas. The second chapter is the research progress, mainly to systematically sort out the research progress of ecosystem services, the impact of climate change on the socio-economic system, and the extraction of crop planting structure. The third chapter is about land use change in ecologically vulnerable areas. It mainly builds a land use change monitoring method, and comprehensively analyzes the spatial differentiation and temporal change characteristics of land use in three typical regions of the Three River Headwaters, Karst Mountains and Heihe River Basin. The fourth chapter is about the impact of land use and climate change in the Three Rivers Source on NPP, mainly to reveal the characteristics of climate and NPP changes, and to analyze the impact mechanism of climate and land use changes on regional NPP, forest NPP, grassland NPP and herdsman income. The fifth chapter is about the impact of land use on ecological services in karst mountainous areas, mainly assessing key ecological services such as water production, soil conservation, carbon storage and nutrient retention, analyzing temporal and spatial changes and gradient effects, clarifying the trade-off and synergy of ecological services, and simulating future land use changes and their impacts on ecosystem services. The sixth chapter is the impact of land use change on ecological services in the Heihe River Basin, mainly assessing crop water consumption and water use efficiency, analyzing the temporal and spatial variation characteristics, revealing the impact of crop planting structure changes on water consumption and water use efficiency, and clarifying agricultural water-saving potential with suggestions. The seventh chapter is the conclusion and discussion, which mainly summarizes the temporal and spatial variation characteristics and ecological effects of land use in the Three River Headwaters, Karst Mountains and Heihe River Basin, and puts forward policy suggestions to support the sustainable development of ecologically vulnerable areas.

This book is supported by the National Natural Science Foundation of China (Grant No. 42071233), the Strategic Pilot Science and Technology Project of the Chinese Academy of Sciences (Category A) (Grant No. XDA20040201), and the Second Comprehensive Scientific Expedition to the Qinghai-Tibet Plateau (Grant No. 2019QZKK0603). Based on the research work of this book, the project has trained 3 master students and published 14 academic papers, which have become an important part of the research results of this book. In the process of comprehensive research and writing of this book, we have received the guidance and help of relevant project consultants and paper review experts. we would like to express high respect and heartfelt thanks here.

Due to the urgency of time and limited level, there are still many contents that need to be improved and deepened in this book. Please forgive me for the deficiencies, omissions and mistakes. I also beg your colleagues and readers to put forward valuable opinions and suggestions.

Contents

Cover

Colophon

Preface and Contents

Chapter I Research Background and Significance

Chapter II Research Progress

Chapter III Land Use Changes in Ecologically Vulnerable Areas

Chapter IV Impacts of Three River Source Land Use and Climate Change on NPP

Chapter V Impacts of Land Use Change in Karst Mountain Area on Ecological Service

Chapter VI Impacts of Land Use Change in Heihe River Basin on Ecological Service

Chapter VII Conclusion and Discussion

Bibliography

Back Cover

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